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Cypress AN20639 Computer Hardware User Manual

1. Fp PRELIMINARY CY7C656xx E CYPRESS 7 0 Pin Description Table Table 7 1 below displays the pin assignments Table 7 1 Pin Assignments 3 CY7C65640B CY7C65620 CY7C65630 Pin Pin Name Type Default Description 3 3 VCC Power N A Mee This signal provides power to the chip 7 7 VCC Power N A Nee This signal provides power to the chip 11 11 VCC Power N A Nee This signal provides power to the chip 15 15 VCC Power N A Mee This signal provides power to the chip 19 19 VCC Power N A Nee This signal provides power to the chip 23 23 VCC Power N A Nee This signal provides power to the chip 27 27 VCC Power N A Mee This signal provides power to the chip 33 33 VCC Power N A Nee This signal provides power to the chip 39 39 VCC Power N A Nee This signal provides power to the chip 55 55 VCC Power N A Mee This signal provides power to the chip 4 4 GND Power N A GND Connect to Ground with as short a path as possible 8 8 GND Power N A GND Connect to Ground with as short a path as possible 12 12 GND Power N A GND Connect to Ground with as short a path as possible 16 16 GND Power N A GND Connect to Ground with as short a path as possible 20 20 GND Power N A GND Connect to Ground with as short a path as possible 24 24 GND Power N A GND Connect to Ground with as short a path as possible 28 28 GND Power N A GND Connect to Ground with as short a path as possible 34 34 GND Power N A GND Connect to Ground wit
2. VID LSB VID MSB PID LSB PID MSB reserved DID MSB Value MSB gt LSB OD oo A wo N Page 13 of 23 a z PRELIMINARY CY7C656xx F Icy PRESS Byte Value MSB gt LSB 7 EnableOverCurrentTimer 3 0 DisableOvercur rentTimer 3 0 8 MaxPower Full speed 9 MaxPower High speed 10 Reserved 11 Reserved 12 HubControllerPower Full Speed 13 HubControllerPower High Speed 14 Reserved 15 Reserved 16 PowerOnTimer 17 lllegalHubDescriptor CompoundDevice FullspeedOnly NoPortIndicators Reserved GangPowered SingleTTOnly Reserved 18 AmberPolarity GreenPolarity Modulatelndicators PowerControlPolarity OverCurrentPolarity OverCurrentMode1 OverCurrentMode2 19 Write Protect 20 NumLangs 21 SupportedStrings 22 ActivePorts 3 0 23 RemovablePorts 3 0 24 LangID a iManufacturer 24 2N b iProduct a 2N c iSerialNumber b 2N d iConfiguration FS C 2N e iConfiguration HS d 2N f ilnterface 0 e 2N g ilInterface 1 f 2N h g 2N Strings N NumLangs Byte 0 0xD3 Needs to be programmed with 0xD3 Byte 1 VID LSB Least Significant Byte of Vendor ID Byte 2 VID MSB Most Significant Byte of Vendor ID Byte 3 PID LSB Least Significant Byte of Product ID Document 38 08037 Rev D Byte 4 PID MSB Most Significant Byte of Product ID Byte 5 Reserved Reserve
3. Byte h Strings Strings addressed by the string pointers Strings must com ply with the USB specification The first byte must be the length of the string in bytes the second must be 0x03 and the string must be in Unicode 10 0 Supported USB Requests 10 1 Device Class Commands Table 10 1 Device Class Requests Request bmRequestType bRequest wValue wlindex wLength Data GetDeviceStatus 10000000B 0x00 0x0000 0x0000 0x0002 2 Byte Device Status GetInterfaceStatus 10000001B 0x00 0x0000 0x0000 0x0002 2 Byte Endpoint Status GetEndpointStatus 10000010B 0x00 0x0000 0x0000 0x0002 2 Byte Endpoint Status GetDeviceDescriptor 10000000B 0x06 0x0001 Zero or Descriptor Descriptor Language ID Length GetConfigDescriptor 10000000B 0x06 0x0002 Zero or Descriptor Descriptor Language ID Length GetDeviceQualifierDe 10000000B 0x06 0x0006 Zero or Descriptor Descriptor scriptor Language ID Length GetOtherSpeedConfigura 10000000B 0x06 0x0007 Zero or Descriptor Descriptor tionDescriptor Language ID Length GetConfiguration A 10000000B 0x08 0x0000 0x0000 0x0001 Configuration value SetCongfiguration 00000000B 0x09 Configuration 0x0000 0x0000 None Value GetInterface 10000001B OxA 0x0000 0x0000 0x0001 Interface Number Note 12 Only one configuration is supported in CY7C656xx Document 38 08037 Rev D Page 16 of 23 Fp PRELIMINARY CY7C656xx Tab
4. Gang power switching Enable single TT mode only Self bus powered compatibility Fully configurable string descriptors for multiple language support e In system EEPROM programming Cypress Semiconductor Corporation e Document 38 08037 Rev D 3901 North First Street 2 0 Introduction EZ USB HX2LP is Cypress s next generation family of high performance low power USB 2 0 hub controllers HX2LP is an ultra low power single chip USB 2 0 hub controller with integrated upstream and downstream transceivers a USB Serial Interface Engine SIE USB Hub Control and Repeater logic and Transaction Translator TT logic Cypress has also integrated many of the external passive components such as pull up and pull down resistors reducing the overall bill of materials required to implement a hub design The entire HX2LP portfolio consists of 1 CY7C65640B TetraHub LP 4 port multiple transaction translator This device option is fit form function compatible with Cy press s existing CY7C65640 device Cypress s Tetra ar chitecture provides four downstream USB ports each with a dedicated Transaction Translator TT making it the high est performance hub available The TetraHub LP also of fers best in class power consumption The CY7C65640B is available in a 56 QFN TetraHub pin compatible for space saving designs 2 CY7C65630 4 port single transaction translator This device option is for ultra
5. Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 32 32 OVR 2 Input 1 Overcurrent Condition Detection Input Default is Active LOW Polarity is controlled through EEPROM 31 31 PWR 2 O Z Z Power Switch Driver Output Default is Active LOW Polarity is controlled through EEPROM Downstream Port 3 5 DD 3 V O Z Z Downstream D Signal 6 DD 3 V O Z Z Downstream D Signal 42 AMBER 3 O 1 LED Driver output for Amber LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 41 GREEN 3 O 1 LED Driver output for Green LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 53 OVR 3 Input 1 Overcurrent Condition Detection Input Default is Active LOW Polarity is controlled through EEPROM 54 S PWR 3 O Z Z Power Switch Driver Output Default is Active LOW Polarity is controlled through EEPROM Downstream Port 4 1 S DD 3 V O Z Z Downstream D Signal 2 S DD 3 V O Z Z Downstream D Signal 44 gt AMBER 3 O 1 LED Driver output for Amber LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 43 GREEN 3 O 1 LED Driver output for Green LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 51 OVR 3 Input 1 Overcurrent Condition Detection Input Default is Active LOW Polarity is controlled through EEPROM 52 S PWR 3 O Z Z Power Switch Drive
6. amber and green LED pins should be left unconnected and the overcurrent pin should be tied HIGH The overcurrent pin is an input and it should not be left floating Document 38 08037 Rev D Page 8 of 23 Fp PRELIMINARY CY7C656xx ss CYPHESS Table 7 1 Pin Assignments continued CY7C65640B CY7C65620 CY7C65630 Pin Pin Name Type Default Description Upstream Port 17 17 D V O Z Z Upstream D Signal 18 18 D V O Z Z Upstream D Signal Downstream Port 1 13 13 DD 1 V O Z Z Downstream D Signal 14 14 DD 1 V O Z Z Downstream D Signal 36 36 AMBER 1 O 1 LED Driver output for Amber LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 35 35 GREEN 1 O 1 LED Driver output for Green LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 30 30 OVR 1 Input 1 Overcurrent Condition Detection Input Default is Active LOW Polarity is controlled through EEPROM 29 29 PWR 1 O Z Z Power Switch Driver Output Default is Active LOW Polarity is controlled through EEPROM Downstream Port 2 9 9 DD 2 1 O Z Z Downstream D Signal 10 10 DD 2 V O Z Z Downstream D Signal 38 38 AMBER 2 O 1 LED Driver output for Amber LED Port Indicator Support Default is Active LOW Polarity is controlled through EEPROM 37 37 GREEN 2 O 1 LED Driver output for Green LED
7. 0 20 0 008 REF 0 28 0 011 PINT ID S On l 0 20 0 008 R Si JVUUUUUUUUU TES 4 cu UUUUUUUUUUL 8010 20 Ak i 0 45 0 018 E i at H H eS i i E PAD o 4 dE SE EP ER St oF i g S 3 PAD SIZE VARY a al SS Re B BY DEVICE TYPE 3 3 H 030 0 012 H 0 50 0 020 G 5 a r Za Shannnnannnnnik d i 0 24 0 009 ax Kat al L CEA 0 60 0 024 a 6 45 0 254 SEATING 6 55 0 258 PLANE Dimensions in mm 51 85144 D E Pad size 6 0 x 6 0 mm typ Windows is a registered trademark of Microsoft Corporation TetraHub and EZ USB HX2LP are trademarks of Cypress Semicon ductor Corporation All product and company names mentioned in this document are trademarks of their respective holders Document 38 08037 Rev D Page 22 of 23 Cypress Semiconductor Corporation 2005 The information contained herein is subject to change without notice Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product Nor does it convey or imply any license under patent or other rights Cypress products are not warranted nor intended to be used for medical life support life saving critical control or safety applications unless pursuant to an express written agreement with Cypress Furthermore Cypress does not authorize its products for use as critical components in life support systems where a malfunction or failure may reasonably be expected to result
8. 1 0 Automatic Mode Amber 1 Manual Mode Green 2 Manual Mode Off 3 Manual Mode Note 15 Selector values for different features are presented in Table 10 4 Document 38 08037 Rev D Page 18 of 23 i 2 CYPRESS PRELIMINARY CY7C656xx 11 0 Upstream USB Connection The following is a schematic of the USB upstream connector VCC BUSPOWER D m D 2 2 el 10V D4 k D 100 kQ GND SHELL 4 7 nF 250V 1 MO V Figure 11 1 USB Upstream Port Connection 12 0 Downstream USB Connections The following is a schematic of the USB downstream connector PWRx VCC 150 UF 0 01 LF DD X DE 10V DD X _____ D GND v SHELL Figure 12 1 USB Downstream Port Connection 13 0 LED Connections The following is a schematic of the LED circuitry 3 3V 6802 GREEN x AWWW Bi AMBER x 6802 Ja Figure 13 1 USB Downstream Port Connection Document 38 08037 Rev D Page 19 of 23 Fa SJ CYPRESS PRELIMINARY CY7C656xx SS 14 0 System Block Diagram 5V BUSPOWER e ale PWR vcc DD 1 D 2 2 uF OVRI PWR4 150 uE Gem D 10V Power 10V T 001 uF De D 100 kQ PWR2 Management PWR3 SE SH OVR2 PWR3 PWR2 A SHELL OVR3 4 7 nE 250V PWR4 PWR 6802
9. EEPROM this descriptor is not present 10 If connected at high speed Document 38 08037 Rev D Page 11 of 23 er Se CYPRESS Sr PRELIMINARY CY7C656xx 8 8 Hub Descriptor Byte All Speed 0 0x09 1 0x29 2 0x041 0x02 3 4 oxoosglt Field Name bLength bDescriptorType bNbrPorts Description 9 Bytes HUB Descriptor Number of ports supported CY7C65640B or CY7C65630 Number of ports supported CY7C65620 b1 b0 Logical Power Switching Mode 00 Ganged power switching all ports power at once 01 Individual port power switching Default in CY7C656xx b2 Identifies a Compound Device 0 Hub is not part of a compound device Default in CY7C656xx 1 Hub is part of a compound device wHubCharacteristics b4 b3 Over current Protection Mode 00 Global Overcurrent Protection The hub reports overcurrent as a summation of all ports current draw without a breakdown of individual port overcurrent status 01 Individual Port Overcurrent Protection The hub reports overcurrent on a per port basis Each port has an over current status Default in CY7C656xx 1X No Overcurrent Protection This option is allowed only for bus powered hubs that do not implement overcurrent protection b6 b5 TT Think Time 00 TT requires at most 8 FS bit times of inter transaction gap ona full low speed downstream bus Default in CY7C656xx b7 Port Indicators Supported 0 Port Indicators are
10. condition Green Fully Operational Blinking Off Green Software Attention Blinking Off Amber Hardware Attention Blinking Green Amber Reserved Page 6 of 23 s CG Ae 6 0 Pin Configuration O O S S Se ZE Z 9 E lt lt x ES ES SE EE e E BS ZS ZS S 2 o wW 1 m D SE E 2m o m E E Oj E a m Oo bo omer D lt o 56 55 54 53 52 51 50 49 48 47 46 45 44 43 DD 4NC f 43 AMBER 3 NC DD 4 NC 2 41 GREEN 3 NC VCC 3 40 GND SSES 39 vcc DD 3 NC 5 38 AMBER 2 DD 3 NC 6 37 GREEN 2 VCC 7 a gar 36 AMBER 1 SH ez eng GND 8 C YPRE S S 35 GREEN 1 DD 2 9 z4 GND DD 2 10 33 VCC vcc f 32 OVR 2 GND H 31 PWR 2 DD 1 us a OVR 1 DD 1 SS 29 PWR 1 15 16 17 18 19 20 21 22 ES E 25 26 27 28 ll o 2 a 8 2 Zg 5 8 2 66 E 8 2 S O e Si G 1 SS O gt Ee D Ke DS n a Figure 6 1 56 pin Quad Flat Pack No Leads 8 mm x 8 mm Note 2 NC are for CY7C65620 ONLY Document 38 08037 Rev D Page 7 of 23
11. iConfiguration high speed The iConfiguration string index reported in the configuration descriptor when operating at high speed 3 iConfiguration full speed The iConfiguration string index reported in the configuration descriptor when operating at full speed 2 iSeriaINumber The iSerialNumber string index reported in the device descriptor 1 iProduct The iProduct string index reported in the device descriptor 0 iManufacturer The iManufacturer string index reported in the device descriptor Page 15 of 23 er S CYPRESS PRELIMINARY CY7C656xx Byte 22 ActivePorts 3 0 Bits 3 0 are the ActivePorts 3 0 bits that indicates if the corresponding port is usable For example a two port hub that uses ports 1 and 4 would set this field to 0x09 The total number of ports reported in the Hub Descriptor bNbrPorts field is calculated from this Byte 23 RemovablePorts 3 0 Bits 3 0 are the RemovablePorts 3 0 bits that indicates whether the corresponding port is removable set to high This bit values are recorded appropriately in the HubDescriptor DeviceRemovable field Default OxFF Byte 24 LangID Array of LanglD codes supported by the hub Each Lang consists of two bytes stored LSB first The array has Num Langs entries 2 NumLangs bytes Byte a iManufacturer Array of addresses for the iManufacturer strings Each ad dress is two bytes long stored LSB first The array has NumLangs entrie
12. signals Note that each port power output pin of the external power switch must be bypassed with an electrolytic or tantalum capacitor as required by the USB specification These capac itors supply the inrush currents which occur during downstream device hot attach events The polarity of this pin can be configured through the EEPROM see section 9 3 5 7 Over current Detection Over current detection includes timed detection of 8 ms by default This parameter is configured from the external EEPROM ina range of 0 ms to 15 ms for both an enabled port and a disabled port individually Detection of over current on downstream ports is managed by control pins connected to an external power switch device The OVR n pins of the CY7C656xx series are connected to the respective external power switch s port over current indication output signals Upon detecting an over current condition the hub device reports the over current condition to the host and disables the PWR output to the external power device The polarity of this pin can be configured through the EEPROM see section 9 3 5 8 Port Indicators The USB 2 0 port indicators are also supported directly by the CY7C656xx As per the specification each downstream port of the hub supports an optional status indicator The presence of indicators for downstream facing ports is specified by bit 7 of the wHubCharacteristics field of the hub class descriptor The default CY7C656xx descripto
13. speed Host Full speed Devices 50 mA High speed Host High speed Devices 123 mA High speed Host Full speed Devices 75 mA No Active Ports Full speed Host 48 mA High speed Host 72 mA 15 4 USB Transceiver 15 5 USB 2 0 Compliant in full low and high speed modes AC Electrical Characteristics Both the upstream USB transceiver and all four downstream transceivers have passed the USB IF USB 2 0 Electrical Certi fication Testing 15 5 1 Serial Peripheral Interface Parameter Description Conditions Min Typ Max Unit Clock Rise Fall Time 500 ns Clock Frequency 250 KHz Data Set up Time 50 ns Hold Time 100 ns Reset Period 1 9 ms Document 38 08037 Rev D Page 21 of 23 a Je PRESS PRELIMINARY CY7C656xx 16 0 Ordering Information Ordering Code Package Type CY7C65640B 56LFXC 56 pin QFN Mult TT CY7C65630 56LFXC 56 pin QFN Single TT CY7C65620 56LFXC 56 pin QFN 2 Port Single TT CY46XX CY7C656xx USB 2 0 4 port Hub Reference Design Kit 17 0 Package Diagrams The CY7C656xx is available in a space saving 56 pin QFN 8 x 8mm 56 Lead QFN 8 x 8 MMLF56A TOP VIEW SIDE VIEW BOTTOM VIEW c oosio003 C 1 00 0 039 MAX kl E 7 90 0 311 lh 8 100 319 SE MAX 7 70 0 303 oS 010 0s MA f 0 18 0 007 7 80 0 307 rr
14. 1 Reported as bit 4 of the wHub Characteristics field of the hub descriptor If set to 1 this bit disables over current detection Document 38 08037 Rev D Bit 0 OverCurrentMode2 Reported as bit 3 of the wHub Characteristics field of the hub descriptor If Bit 1 of this byte is set to 0 over current detection is enabled If this bit Bit 0 is set to 1 the hub reports over current on a per port basis If set to 0 the hub reports over current as the sum mation of all ports current draw Byte 19 Write Protect Byte 20 NumLangs Number of supported string languages CHC supports a maximum of 31 languages if this field is set to 0 or a num ber larger than 31 all string support will be disabled Byte 21 SupportedStrings This field contains a bitmap of strings supported by the hub A set bit indicates that the standard string is supported A bit not set indicates that the string is not supported The hub controller will return a non zero index for each string which is supported and will return 0x00 for each string not sup ported as indicated by this field The bits in this field corre spond to the following standard strings Bit Name 7 reserved Description 6 ilnterface 1 The ilnterface string index reported in the second interface descriptor alternate setting 1 5 ilnterface 0 The ilnterface string index reported in the first interface descriptor alternate setting 0 4
15. 4 PORT_INDICATOR 0 1 2 or 3 Byte 1 Port SetHubFeature 00100000B 0x03 Feature 0x0000 0x0000 Selector 3 Dor SetPortFeature 00100011B 0x03 Feature Port 0x0000_ None Selectors 3 2 40r8 SetPortFeature 00100011B 0x03 Feature Byte 0 0x0000 None Selector 3 21 Selectors 9 PORT_TEST 1 2 3 40r5 Byte 1 Port SetPortFeature 00100011B 0x03 Feature Byte 0 0x0000 None Selectorl 3 22 Selectors 4 PORT_INDICATOR 0 1 2 or 3 Byte 1 Port GetHubDescriptor 10100000B 0x06 Descriptor Type and Hub Descriptor Index Descriptor Length Notes 13 Feature selector values for different feature is presented in Table 10 3 14 Selector values for different feature is presented in Table 10 5 Document 38 08037 Rev D Page 17 of 23 SC PRELIMINARY CY7C656xx a O PRESS Table 10 2 Hub Class Requests continued Request bmRequestType bRequest wValue windex wLength Data ClearTT Buffer 00100011B 0x08 Dev_Addr EP_Num TT_Port 0x0000_ None ResetTT 00100000B 0x09 0x0000 Byte 0 0x00 0x0000 None Byte 1 Port GetTTState 10100011B OX0A_ TT_Flags Byte 0 0x00 TT State TT State Byte 1 Port Length StopTT 00100011B 0x0B 0x0000 Byte 0 0x00 0x0000 None Byte 1 Port Vendor Commands Read EEPROM 11000000B 0x02 0x00 0x00 Length Data This request results in Length bytes of Data being read from the external memory device and returned to the host Data i
16. 4 are for an enabled port and bits 3 0 are for a disabled port Both range from 0 ms to 15 ms See section 5 8 Default 8 ms 0x88 Byte 8 ActivePorts 3 0 RemovablePorts 3 0 Bits 7 4 are the ActivePorts 3 0 bits that indicates if the corresponding port is usable For example a two port hub that uses ports 1 and 4 would set this field to 0x09 The total number of ports reported in the Hub Descriptor bNbrPorts field is calculated from this Bits 3 0 are the Removable Ports 3 0 bits that indicates whether the corresponding port is removable set to high This bit values are recorded appropriately in the HubDescriptor DeviceRemovable field Default OxFF Document 38 08037 Rev D Byte 9 MaximumPower This value is reported in the ConfigurationDescriptor bMax Power field and is the current in 2 mA intervals that is re quired from the upstream hub Default 0x28 80 mA for ul speed and 0x57 174 mA for high speed Byte 10 HubControllerPower This value is reported in the HubDescriptor bHubContrCur rent field and is the current in milliamperes required by the hub controller Default 0x28 80 mA for full speed and 0x57 174 mA for high speed Byte 11 PowerOnTimer This value is reported in the WHubDescriptor bPwrOn2PwrGood field and is the time in 2 ms intervals from the SetPortPower command until the power on the corresponding downstream port is good Default 0x32 100 ms Byte 12 IllegalHubDescrip
17. ENDPOINT_DESCRIPTOR 2 0x81 0x81 bEndpointAddress IN Endpoint 1 3 0x03 0x03 bmAttributes Interrupt 4 5 0x0001 0x0001 wMaxPacketSize Maximum Packet Size 6 OxFF 0x0C bInterval Polling Rate 8 5 Interface Descriptor Byte Full Speed High Speed Field Name Description 0 N A 0x09 bLength 9 Bytes 1 N A 0x04 bDescriptorType INTERFACE_DESCRIPTOR 2 N A 0x00 blInterfaceNumber Interface Descriptor Index 3 N A 0x01 bAlternateSetting Alternate Setting for the Interface 4 N A 0x01 bNumEndpoints Number of Endpoints Defined 5 N A 0x09 bInterfaceClass Interface Class 6 N A 0x00 bInterfaceSubClass Interface Sub Class 7 N A 0x02 bInterfaceProtocol Interface Protocol 8 N A 0x00 bInterface Interface String Index 8 6 Endpoint Descriptor 10 Byte Full Speed High Speed Field Name Description 0 N A 0x07 bLength 7 Bytes 1 N A 0x05 bDescriptorType ENDPOINT_DESCRIPTOR 2 N A 0x81 bEndpointAddress IN Endpoint 1 3 N A 0x03 bmAttributes Interrupt 4 5 N A 0x0001 wMaxPacketSize Maximum Packet Size 6 N A 0x0C bInterval Polling Rate 8 7 Device Qualifier Descriptor Byte Full Speed High Speed Field Name Description 0 Ox0A Ox0A bLength 10 Bytes 1 0x06 0x06 bDescriptorType DEVICE_QUALIFIER 2 3 0x0200 0x0200 bcdUSB 0x09 0x09 bDeviceClass 0x00 0x00 bDeviceSubClass ox01 4 0x00 bDeviceProtocol oxo2ll 0x40 0x40 bMaxPacketSize0 0x01 0x01 bNumConfigurations 0x00 0x00 bReserved Note 9 If CY7C65640B is configured for singled TT only or CY7C65630 or CY7C65620 from the external
18. Hub Port State Disconnected Disabled Not Enabled Transmit or Suspended Resuming Powered Off Configured Resetting Testing TransmitR SendEOR Restart_E S Off or Amber if due to an Off Green Off Overcurrent Condition Document 38 08037 Rev D Page 5 of 23 PRELIMINARY CY7C656xx i 7 Cypress The LED control lines can also be modulated with a square wave for power conservation in systems using batteries Alone with this there is also a polarity control for these pins see section 9 3 In manual mode the indicators are under the control of the host which can turn on one of the LEDs or leave them off This is done by a system software USB Hub class request Blinking of the LEDs is supported in Manual Mode The port indicators allow the user to intervene on any error detection For example when babble is detected on plugging in a defective device or on occurrence of an overcurrent condition the port indicators corresponding to the downstream port will blink green or only light the amber LED respectively Note 1 Information presented in Table 5 1 and Table 5 2 is from USB 2 0 specification Tables 11 6 and 11 7 respectively Document 38 08037 Rev D Table 5 2 displays the color definition of the indicators when CY7C656xx is in Manual Mode il Table 5 2 Port Indicator Color Definitions in Manual Mode Color Definition Port State Off Not operational Amber Error
19. Prior to the hubs being configured the ports are driven SEO Single Ended Zero where both D and D are driven low and are set to the Page 4 of 23 e a SE ee PRELIMINARY CY7C656xx unpowered state Once the hubs are configured the ports are not driven and the host may power the ports by sending a SetPortPower command to each port After a port is powered any connect or disconnect event is detected by the hub Any change in the port state is reported by the hubs back to the host through the Status Change Endpoint endpoint 1 Upon receipt of SetPortReset command from the host the hub will e Drive SEO on the corresponding port e Put the port in an enabled state e Enable the green port indicator for that port if not previously overridden by the host e Enable babble detection once the port is enabled Babble consists of either unterminated traffic from a downstream port or loss of activity or a non idle condition on the port after EOF2 If babble is detected on an enabled port that port will be disabled A ClearPortEnable command from the host will also disable the specified port Downstream ports can be individually suspended by the host with the SetPortSuspend command If the hubs are not suspended any resume will be confined to that individual port and reflected to the host through a port change indication in the Hub Status Change Endpoint If the hubs are suspended a resume on this port will be forwarded to the hos
20. SB 1 x systems no such chirp sequence from the upstream hub will be seen and CY7C656xx will operate as a normal 1 x hub operating at full speed 5 2 Enumeration After a USB Bus Reset CY7C656xx is in an unaddressed unconfigured state configuration value set to 0 During the enumeration process the host will set the hub s address and configuration by sending a SetCongfiguration request For high speed multi TT support the host must also set the alternate interface setting to 1 the default mode is single TT Once the hub is configured the full hub functionality is available 5 3 Multiple Transaction Translator Support After the CY7C65640B is configured in a high speed system it will be in Single TT mode The host may then set the hub into Multiple TT mode by sending a Setlnterface command In Multiple TT mode each full speed port is handled indepen dently and thus has a full 12 Mbps bandwidth available In Single TT mode all traffic from the host destined for full or low speed ports will be forwarded to all of those ports This means that the 12 Mbps bandwidth is shared by all full and low speed ports 5 4 Downstream Ports The CY7C656xx supports a maximum of four downstream ports each of which may be marked as usable or removable in the extended configuration OxD2 EEPROM load see section 9 2 or 0xD4 EEPROM load see section 9 3 Downstream D and D pull down resistors are incorporated in CY7C656xx for each port
21. Se i Vv OVR4 GREEN 1 AAA 1 MO Es WWW AMBER 1 6802 D a SPI_SD SPI SPLSCK EEPROM sp sp PWR2 a vee SPI_CS 150 uF Ge Da O A TO GND SHELL v lt 24 MHz i 3 3V EN L GREEN 2 _ Poe SS Ges eer Tu a v AMBER 2 6802 AM st OO N OQO zZ e ia QO00000 OOO T x 3 OGOOGO QOQOL S SS gt gt gt gt gt gt S BUSPOWER BUSPOWER PWR3 Tee GREEN 1 GREEN 1 E DD 3 ae 3 3V AMBER 1 AMBER 1 ay aS pul Be Wl GREEN 2 GREEN 2 GND SS 100K AMBER 2 AMBER 2 l Ta SHELI RESET GREEN 3 GREEN 3 En 0 AuF D D AMBER 3 AMBER 3 a y D D GREEN 4 GREEN 4 DEENS NMM AMBER 4 AMBER 4 Pe HX2LP e AMBER 3 6802 DD 1 DD 1 PWR1 PWR1 E A DAD DAD OVR1 OVR1 PWR2 PWR2 DD 2 DD 2 OVR2 OVR2 DD 2 DD 2 PWR3 PWR3 PWR4 VEE OVR3 OVR3 DD 4 Be DD 3 DD 3 PWR4 PwR4 Se es EE OVR4 OVR4 ie 0 01 WF a DD 3 DD 3 OVR4 eme DD 4 DD 4 SPI_CS SPI CS SHELL l SPI_SCK SPI_SCK Y DD 4 DD 4 3 3 V SPI_SD SPI_SD GE j Sal tole A AWWW A HnpaTtaaiqaaaqgceaHuaia Se 2 Pa Pah Pa Pa PL Fy EE N AMBER 4 6809 oo SGOGO55 050566 a Document 38 08037 Rev D Figure 14 1 Sample Schematic Page 20 of 23 z PRELIMINARY CY7C656xx SF CYPRESS 15 0 Electri
22. cal Characteristics 15 1 Absolute Maximum Ratings 15 2 Operating Conditions Storage Temperature ccccceescsceseeeeeees 65 C to 150 C Ta Ambient Temperature Under Bias 0 C to 70 C Ambient Temperature with Power Applied 0 to 70 C Supply e LE 3 15V to 3 45V Supply Voltage to Ground Potential 0 5V to 4 0V Ground Voltage EE OV DC Voltage Applied to Outputs in High Z State SEENEN SEET 0 5V to Voc 0 5V FOSC Oscillator or Crystal Frequency 24 MHz 0 05 parallel resonant Power Dissipation 4 HS oof TBD W fundamental mode Static Discharge Voltage cccccccsecccsscsesetssseeeeeeees gt 2000V Pee art air Max Output Sink Current per IO 10 mA l 15 3 DC Electrical Characteristics Parameter Description Conditions Min Typ Max Unit Voc Supply Voltage 3 15 3 3 3 45 V Vcc RampUp Ramp rate on Voc 18 V ms Vin Input High Voltage 2 5 25 V Vu Input Low Voltage 0 5 0 8 V l Input Leakage Current 0 lt Vin lt Nee 10 uA VoH Output Voltage High lout 4 MA 2 4 V VoL Output Low Voltage lout 4 mA 0 4 V lou Output Current High 4 mA lot Output Current Low 4 mA Cin Input Pin Capacitance 10 pF Isusp Suspend Current TBD uA lcc Supply Current 4 Active ports Full speed Host Full speed Devices 53 mA High speed Host High speed Devices 174 mA High speed Host Full speed Devices 77 mA 2 Active Ports Full
23. d Byte 6 DID MSB Most Significant Byte of Device ID Byte 7 EnableOvercurrentTimer 3 0 DisabledOvercur rentTimer 3 0 Count time in ms for filtering overcurrent detection Bits 7 4 are for an enabled port and bits 3 0 are for a disabled port Both range from 0 ms to 15 ms See section 5 8 Default 8 ms 0x88 Byte 8 MaximumPower Full Speed This value is reported in the ConfigurationDescriptor oMax Power field and is the current in 2 mA intervals that is re quired from the upstream hub when connected at full speed Default 0x28 160 mA for full speed Byte 9 MaximumPower High Speed This value is reported in the ConfigurationDescriptor bMax Power field and is the current in 2 mA intervals that is re quired from the upstream hub when connected at high speed Default 0x57 348 mA for high speed Byte 10 Reserved Zeros should be written to this location Byte 11 Reserved Zeros should be written to this location Byte 12 HubControllerPower Full Speed This value is reported in the HubDescriptor bHubContrCur rent field and is the current in milliamperes required by the hub controller when connected on the upstream hub as a full speed Default 0x50 80 mA for full speed Byte 13 HubControllerPower High speed This value is reported in the HubDescriptor bHubContrCur rent field and is the current in milliamperes required by the hub controller when connected on the upstream hub as a high spee
24. d Default OxAE 174 mA for high speed Byte 14 Reserved Zeros should be written to this location Byte 15 Reserved Zeros should be written to this location Byte 16 PowerOnTimer This value is reported in the WHubDescriptor bPwrOn2PwrGood field and is the time in 2 ms intervals from the SetPortPower command until the power on the corresponding downstream port is good Default 0x32 100 ms Byte 17 IllegalHubDescriptor CompoundDevice Full speedOnly NoPortindicators Reserved GangPowered SingleTTOnly Bit 7 lllegalHubDescriptor For GetHubDescriptor request some USB hosts use a DescriptorTypeof 0x00 instead of HUB_DESCRIPTOR 0x29 According to the USB 2 0 stan dard a hub must treat this as a Request Error and STALL the transaction accordingly USB 2 0 11 24 2 5 For sys Page 14 of 23 i 7 Cypress PRELIMINARY CY7C656xx tems that do not accept this the IllegalHubDescriptor con figuration bit may be set to allow CY7C656xx to accept a DescriptorType of 0x00 for this command Default is 0 rec ommended setting is 1 Bit 6 CompoundDevice Indicates whether the hub is part of a compound device This is reported in the HubDescrip tor wHub Characteristics b2 Default set to 0 Bit 5 Fullspeed Only configures the hub to be a full speed only device Default set to 0 Bit 4 NoPortIndicators Turns off the port indicators and does not report them as present in the HubDescriptor wHubCharacteris
25. dvanced port replicators Docking stations e Split PC designs External personal storage drives Keyboard hubs Document 38 08037 Rev D 5 0 Functional Overview The Cypress CY7C656xx USB 2 0 Hubs are a high perfor mance low system cost solution for USB The CY7C656xx USB 2 0 Hubs integrate 1 5k upstream pull up resistors for full speed operation and all downstream 15k pull down resistors as well as series termination resistors on all upstream and downstream D and D pins This results in optimization of system costs by providing built in support for the USB 2 0 specification 5 1 System Initialization On power up the CY7C656xx will read an external SPI EEPROM for configuration information At the most basic level this EEPROM will have the Vendor ID VID Product ID PID and Device ID DID for the customer s application For more specialized applications other configuration options can be specified See section 9 0 for more details After reading the EEPROM if BUSPOWER connected to up stream VBus is HIGH CY7C656xx will enable the pull up resistor on the D to indicate that it is connected to the upstream hub after which a USB Bus Reset is expected During this reset CY7C656xx will initiate a chirp to indicate that it is a high speed peripheral In a USB 2 0 system the upstream hub will respond with a chirp sequence and CY7C656xx will be in a high speed mode with the upstream D pull up resistor turned off In U
26. e bam a mg ge y CY7C656xx KE di CYPRESS PRELIMINARY E EZ USB HX2LP Low Power USB 2 0 Hub Controller Family 1 0 Features e USB 2 0 hub controller e Compliant with the USB 2 0 specification e Windows Hardware quality lab WHQL compliant e Up to four downstream ports supported e Supports bus power and self powered modes e Single TT and Multi TT modes supported Single TT option for low cost Multi TT option for high performance e 2 Port Single TT option for bus power Fit form function compatible option with CY7C65640 TetraHub Multiple package options Space saving 56 QFN e Single power supply requirement Internal regulator for reduced cost e Integrated upstream pull up resistor e Integrated pull down resistors for all downstream ports e Integrated upstream and downstream termination resistors e Integrated port status indicator controls e 24 MHz external crystal integrated PLL e Configurable with external SP EEPROM Vendor ID Product ID Device ID VID PID DID Number of active ports Number of removable ports Maximum power setting for high speed and full speed Hub controller power setting Power on timer Overcurrent detection mode Overcurrent timer Enable Disable overcurrent timer Overcurrent pin polarity indicator pin polarity Compound device Enable full speed only Disable port indicators
27. e CY7C656xx Document 38 08037 Rev D 9 1 Default 0xDO Load When used in default mode only a unique VID PID and DID must be present in the external SP EEPROM The contents of the EEPROM must contain this information in the following format Byte Value 0 0xDO 1 VID LSB 2 VID MSB 3 PID LSB 4 PID MSB 5 reversed 6 DID MSB Page 12 of 23 er E 7 Cypress PRELIMINARY CY7C656xx 9 2 Configured 0xD2 Load Byte Value MSB gt LSB D 0xD2 VID LSB VID MSB PID LSB PID MSB reversed DID MSB NI OO Oo BY CO P EnableOverCurrentTimer 3 0 DisableOvercurrent Timer 3 0 8 ActivePorts 3 0 RemovablePorts 3 0 9 MaxPower 10 HubControllerPower 11 PowerOnTimer 13 llegalHubDescriptor CompoundDevice FullspeedOnly NoPortindicators Reserved GangPowered SingleTTOnly Reserved Byte 0 0xD2 Needs to be programmed with 0xD2 Byte 1 VID LSB Least Significant Byte of Vendor ID Byte 2 VID MSB Most Significant Byte of Vendor ID Byte 3 PID LSB Least Significant Byte of Product ID Byte 4 PID MSB Most Significant Byte of Product ID Byte 5 Reserved Reserved Byte 6 DID MSB Most Significant Byte of Device ID Byte 7 EnableOvercurrentTimer 3 0 DisabledOvercur rentTimer 3 0 Count time in ms for filtering overcurrent detection Bits 7
28. h as short a path as possible 40 40 GND Power N A GND Connect to Ground with as short a path as possible 47 47 GND Power N A GND Connect to Ground with as short a path as possible 50 50 GND Power N A GND Connect to Ground with as short a path as possible 56 56 GND Power N A GND Connect to Ground with as short a path as possible 21 21 XIN Input N A 24 MHz Crystal IN or External Clock Input 22 22 XOUT Outpu N A 24 MHz Crystal OUT t 46 46 RESET Input N A Active LOW Reset This pin resets the entire chip It is normally tied to Vcc through a 100K resistor and to GND through a 0 1 uF capacitor Other than this no other special power up procedure is required 45 45 SELFPWR Input N A Indicator for bus self powered 0 is bus powered 1 is self powered 26 26 VBUSPOWER Input N A VBUS Connect to the VBUS pin of the upstream connector This signal indicates to the hub that it is in a connected state and may enable the D pull up resistor to indicate a connection The hub will do so after the external EEPROM is read unless it is put into a high speed mode by the upstream hub SPI Interface 25 25 SPI_CS Q O SPI Chip Select Connect to CS pin of the EEPROM 48 48 SPI_SCK O O SPI Clock Connect to EEPROM SCK pin 49 49 SPI_SD 1 O Z Z SPI Dataline Connect to GND with 15 KQ resistor and to the Data I O pins of the EEPROM Note 3 Unused port DD DD lines can be left floating The port power
29. in significant injury to the user The inclusion of Cypress er E 7 Cypress PRELIMINARY CY7C656xx Document History Page Document Title CY7C656xx EZ USB HX2LP Low Power USB 2 0 Hub Controller Family Document Number 38 08037 Orig of REV ECN NO Issue Date Change Description of Change Kg 131505 02 12 2004 JTC New Data Sheet A 231329 See ECN KKU Changed load capacitors to 12 pF updated part numbers added functional overviews block descriptions pin configurations default descriptors config urations options supported USB requests electrical characteristics and package diagram SE 250869 See ECN ARI Added typical values for Icc in Table 15 3 changed MPN CY7C65650 to CY7C65640B added CY7C65620 package CG 330195 See ECN KKU Added Reset period in table 15 5 1 Added 0xD4 EEPROM Load Added vendor command values Added Vcc ramp rate Updated block diagram D 342997 See ECN KKU Updated features list Removed from section 5 2 Once the hub is configured the full hub function ality is available Added reference to 0xD4 load to section 5 4 Added reference to polarity control in sections 5 6 and 5 7 Updated table 5 1 to match USB IF spec changes Added LED modulation to section 5 8 Updated pin description table SELFPWR to SELFPWR and removed refer ences to limitations of bus powered Added reference to polarity control on PWR OVR and LED control lines Updated Defa
30. le 10 1 Device Class Requests continued Request bmRequestType bRequest wValue wlindex wLength Data Setinterface 00000001B 0x0B Alternate Interface 0x0000 None Setting Number SetAddress 00000000B 0x05 Device Address 0x0000 0x0000 None SetDeviceRemoteWakeup 00000000B 0x03 0x01 0x0000 0x0000 None SetDeviceTest_J 00000000B 0x03 0x02 0x0100 0x0000 None SetDeviceTest_K 00000000B 0x03 0x02 0x0200 0x0000 None SetDeviceTest_SEO NAK 00000000B 0x03 0x02 0x0300 0x0000 None SetDeviceTest_Packet 00000000B 0x03 0x02 0x0400 0x0000 None SetEndpointHalt 00000000B 0x03 0x00 0x0000 0x0000 None ClearDeviceRe 00000000B 0x01 0x01 0x0000 0x0000 None moteWakeup ClearEndpointHalt 00000000B 0x01 0x00 0x0000 0x0000 None 10 2 Hub Class Commands Table 10 2 Hub Class Requests Request bmRequestType bRequest wValue windex wLength Data GetHubStatus 10100000B 0x00 0x0000 0x0000 0x0004 Hub Status See Table 11 19 of Spec Change Status See Table 11 20 of Spec GetPortStatus 10100011B 0x00 0x0000 Byte 0 0x00 0x0004 Port Status See Table 11 21 Byte 1 Port of Spec Change Status See Table 11 20 of Spec ClearHubFeature 00100000B 0x01 Feature 0x0000 0x0000_ None Selectors 5 0 or 1 ClearPortFeature 00100011B 0x01 Feature Byte 0 0x00 0x0000 None Selectors 3 Byte 1 Port 1 2 8 16 17 18 19 or 20 ClearPortFeature 00100011B 0x01 Feature Selectors 5 Byte 0 ox0000 None 22 Selectors
31. low cost applications where performance is secondary consideration All four ports must share a single transaction translator in this configura tion The CY7C65630 is available in a 56 QFN and is also pin for pin compatible with the CY7C65640 3 CY7C65620 This device option is for a 2 port bus powered application Both ports must share a single transaction translator in this configuration The CY7C65620 is available in a 56 QFN and is also pin for pin compatible with the CY7C65640 All device options are supported by Cypress s world class reference design kits which include board schematics bill of materials Gerber files Orcad files and thorough design documentation San Jose CA 95134 408 943 2600 Revised March 31 2005 a SEFA CYPRESS PRELIMINARY CY7C656xx F 3 0 Block Diagrams USB 2 0 PHY 24 MHz PLL Crystal USB Upstream Port Hub Repeater High Speed Serial USB Control Logic Interface ett yer Engine SPI Sech EN SPL SD SE SPI_CS Transaction Translator X4 Routing Logic USB Downstream Port 1 USB Downstream Port 2 USB Downstream Port 3 USB Downstream Port 4 Port Powe Port USB 2 0 Port Power Port USB 2 Port Power Port USB 2 0 Port Power Port Control Status EI Control tus PHY Control Status PHY Control Status D D PWR 1 LED D D PWR 2 OVR 1 OVR 2 Document 38 08037 Rev D LED D D PWR 3 LED D D PWR 4 LED OV R 3 OVR 4 Figure 3 1 CY7C65640B Bl
32. nfiguration Descriptor Byte Full Speed High Speed Field Name Description 0 0x09 0x09 bLength 9 Bytes 1 0x02 71 0x07 0x02 71 0x07 bDescriptorType CONFIG_DESCRIPTOR 2 0x0019 K ER wTotalLength Length of all other descriptors 0x0029 oxoo29 4 0x01 0x01 bNumInterfaces 1 5 0x01 0x01 bConfigurationValue The configuration to be used 6 0x00 0x00 iConfiguration 7 OxA0 OxA0 bmAttributes Value depends on pin 45 SELFPWR signal OxE0O OxE0O SELFPWR 0 yields OxAO and 1 yields OxEO 8 0x28 0x57 bMaxPower 8 3 Interface Descriptor Byte Full Speed High Speed Field Name Description 0 0x09 0x09 bLength 9 Bytes 1 0x04 0x04 bDescriptorType INTERFACE_DESCRIPTOR 2 0x00 0x00 bInterfaceNumber 3 0x00 0x00 bAlternateSetting 4 0x01 0x01 bNumEndpoints 5 0x09 0x09 binterfaceClass 6 0x00 0x00 bInterfaceSubClass 7 0x00 0x01 oxool 0x01 binterfaceProtocol 8 0x00 0x00 ilnterface Notes If configured as single TT hub If configured as multi TT hub and other speed This value is configured through the External EEPROM Configured speed descriptor Other speed descriptor ON DOP Document 38 08037 Rev D Page 10 of 23 a Foor PRELIMINARY CY7C656xx gt CYPRESS 8 4 Endpoint Descriptor Byte Full Speed High Speed Field Name Description 0 0x07 0x07 bLength 7 Bytes 1 0x05 0x05 bDescriptorType
33. not supported on its downstream facing ports and the PORT_INDICATOR request has no effect 1 Port Indicators are supported on its downstream facing ports and the PORT_INDICATOR request controls the indicators See Section 5 0 and 10 0 Default in CY7C656xx b15 b8 Reserved 5 KEN bPwrOn2PwrGood Time from when the port is powered to when the power is good on that port 6 ox2glTT oxAE bHubContrCurrent Maximum current requirement for the Hub Controller at full speed Maximum current requirement for the Hub Controller at high speed 7 Kee bDeviceRemovable Indicates if the port has a removable device attached 8 sc bPortPwrCtriMask Required for compatibility with software written for 1 0 compliant devices Note 11 This value is configured through the External EEPROM 9 0 Configuration Options Systems using CY7C656xx that do not have the fuse ROM pre set at the factory must have an external EEPROM in order for the device to have a unique VID PID and DID The CY7C656xx can communicate with SP EEPROM that are either double byte addressed or a single byte with the 9th bit within the instruction byte such as the 24LC040 parts use The 25LC080 EEPROM uses the double byte address format and therefore the CY7C656xx can communicate with these parts The 010s and 020s uses the same command format as used to interface with the 040 and hence these can also be used to interface with th
34. ock Diagram Page 2 of 23 a 7 Cypress PRELIMINARY CY7C656xx 3 0 Block Diagrams continued High Speed USB 2 0 PHY Serial USB Control Logic Interface PLL Engine SPI Communication Block Transaction Translator X1 24 MHz Crystal SPI_SCK SPI_SD SPI_CS USB Upstream Port Hub Repeater Routing Logic USB Downstream Port 1 USB Downstream Port 2 USB Downstream Port 3 USB Downstream Port 4 USB 2 0 f Port Power f Port Port Power Port PHY Control Status Control Status D D PWR 1 OVR LED D D PWR 21 LED D D Papa LED D D PWRIL LED 01 VR 2 VR 3 VR 4 This applies to CY7C 65630 only Figure 3 2 CY7C65630 CY7C65620 Block Diagram Document 38 08037 Rev D Page 3 of 23 a 7 Cypress PRELIMINARY CY7C656xx 3 1 USB Serial Interface Engine SIE The SIE allows the CY7C656xx to communicate with the USB host through the USB repeater component of the HUB The SIE handles the following USB activity independently of the HUB Control Block e Bit stuffing unstuffing e Checksum generation checking e ACK NAK STALL e TOKEN type identification e Address checking 3 2 Hub Repeater The HUB Repeater manages the connectivity between upstream and downstream facing ports that are operating at the same speed It supports full low speed connectivity and high speed connectivity Per the USB 2 0 specification the HUB Repeater provides the following functi
35. ons e Sets up and tears down connectivity on packet boundaries e Ensures orderly entry into and out of the Suspend state including proper handling of remote wakeups 3 3 Transaction Translator TT The TT basically translates data from one speed to another A TT takes high speed split transactions and translates them to full low speed transactions when the HUB is operating at high speed the upstream port is connected to a high speed host controller and has full low speed devices attached The operating speed of a device attached on a downstream facing port determines whether the Routing Logic connects a port to the Transaction Translator or Hub Repeater section If a low full speed device is connected to the hub operating at high speed the data transfer route includes the transaction trans lator If a high speed device is connected to this high speed hub the route only includes the repeater and no transaction translator since the device and the hub are in conformation with respect to their data transfer speed When the hub is operating at full speed the upstream port is connected to a full speed host controller a high speed peripheral will not operate at its full capability These devices will only work at 1 1 speed Full and low speed devices connected to this hub will operate at their 1 1 speed 4 0 Applications e Typical applications for the HX2LP device family are e Standalone hubs Motherboard hubs Monitor hubs A
36. r Output Default is Active LOW Polarity is controlled through EEPROM Document 38 08037 Rev D Page 9 of 23 So CYPRESS eS 8 0 8 1 PRELIMINARY CY7C656xx Default Descriptors Device Descriptor The standard device descriptor for CY7C656xx is based on the VID PID and DID found in the SPI EEPROM This VID PID DID in the EEPROM will overwrite the default VID PID DID If no EEPROM is used the CY7C656xx will enumerate with the default descriptor values as shown below Byte Full Speed High Speed Field Name Description 0 0x12 0x12 bLength 18 Bytes 1 0x01 0x01 bDescriptorType DEVICE_DESCRIPTOR 2 3 0x0110 0x0200 bcdUSB USB specification 2 0 in HS 1 1 if forced FS 4 0x09 0x09 bDeviceClass HUB 5 0x00 0x00 bDeviceSubClass None 6 0x00 0x011 0x02 bDeviceProtocol None 7 0x40 0x40 bMaxPacketSize0 64 bytes 8 9 0x04B4 0xx04B4 wldVendor VID overwritten by what is defined in EEPROM 10 11 0x6560 0x6560 wldProduct PID overwritten by what is defined in EEPROM 12 13 0x0910 0x0910 wbcdDevice DID overwritten by what is defined in EEPROM 0x0810 0x0810 14 0x00 0x00 iManufacturer No manufacturer string supported 15 0x00 0x00 iProduct No product string supported 16 0x00 0x00 iSerialNumber No serial string supported 17 0x01 0x01 bNumConfigurations One configuration supported 8 2 Co
37. r specifies that port indicators are supported wHubCharacteristics bit 7 is set If port indicators are not included in the hub this should be disabled by the EEPROM Each port indicator is strategically located directly on the opposite edge of the port which it is associated with The indicator provides two colors green and amber This is imple mented as two separate LEDs one amber and the other green A combination of hardware and software control is used to inform the user of the current status of the port or the device attached to the port and to guide the user through problem resolution Colors and blinking are used to provide information to the user The significance of the color of the LED depend on the operational mode of the CY7C656xx There are two modes of operation for the CY7C656xx port indicators automatic and manual On power up the CY7C656xx defaults to Automatic Mode where the color of the Port Indicator Green Amber Off indicates the functional status of the CY7C656xx port In Automatic Mode the CY7C656xx will turn on the green LED whenever the port is enabled and the amber LED when it has had an overcurrent condition detected The color of the port indicator is set by the port state machine Blinking of the LEDs is not supported in Automatic Mode Table 5 1 below identifies the mapping of color to port state in Automatic Mode Table 5 1 Automatic Port State to Port Indicator Color Mapping Downstream Facing
38. s 2 NumLangs bytes The starting EE PROM address is based upon the number entered for NumLangs The address a 24 2 NumLangs Byte b iProduct Array of addresses for the iProduct strings Each address is two bytes long stored LSB first The array has Num Langs entries 2 NumLangs bytes The address b a 2 NunLangs Byte c iSerialNumber Array of addresses for the iSerialNumber strings Each ad dress is two bytes long stored LSB first The array has NumLangs entries 2 NumLangs bytes The address c b 2 NumLangs Byte d iConfiguration Full Speed Array of addresses for the iConfiguration full speed strings Each address is two bytes long stored LSB first The array has NumLangs entries 2 NumLangs bytes The address d c 2 NumLangs Byte e iConfiguration High Speed Array of addresses for the iConfiguration high speed strings Each address is two bytes long stored LSB first The array has NumLangs entries 2 NumLangs bytes The address e d 2 NumLangs Byte f ilnterface 0 Array of addresses for the ilnterface 0 strings Each ad dress is two bytes long stored LSB first The array has NumLangs entries 2 NumLangs bytes The address f e 2 NumLangs Byte g ilnterface 1 Array of addresses for the ilnterface 1 strings Each ad dress is two bytes long stored LSB first The array has NumLangs entries 2 NumLangs bytes The address g f 2 NumLangs
39. s read beginning with address 0 This request will fail if there is no external memory device present This request is only valid if the hub is in the Configured state the request will fail otherwise Write EEPROM 01000000B 0x01 0x00 0x00 Length Data This request results in Length bytes of Data being written to the external memory device Data is written beginning with address 0 This request will fail if there is no external memory device present This request is only valid if the hub is in the Configured state the request will fail otherwise Table 10 3 Hub Class Feature Selector Table 10 4 Test Mode Selector for Feature Selector PORT TEST 0x21 5 Feature Selector Recipient Value C_HUB_LOCAL_POWER Hub 0 PORT_TEST Mode Description Selector Value C_HUB_OVER_CURRENT Hub 1 Test_d 1 PORT_CONNECTION Port 0 Test 2 PORT_ENABLE Port 1 Test GEO NAK 3 PORT_SUSPEND Port 2 Test_Packet 4 PORT_RESET Port 4 Test_Force_Enable 5 PORT_POWER Port 8 PORT_LOW_SPEED Port 9 C_PORT_CONNECTION Port 16 C_PORT_ENABLE Port 17 C_PORT_SUSPEND Port 18 C_PORT_OVER_CURRENT Port 19 C_PORT_RESET Port 20 PORT_TEST Port ER PORT_INDICATOR Port 29 Table 10 5 Port Indicator Selector for Feature Selector PORT_INDICATOR 0x22 Port Indicator Color Selector Value Port Indicator Mode Color Set Automatically as shown in Table 5
40. t but other resume events will not be seen on that port The host may resume the port by sending a ClearPortSuspend command 5 5 Upstream Port The upstream port includes the transmitter and the receiver state machine The Transmitter and Receiver operate in high speed and full speed depending on the current hub configu ration The transmitter state machine monitors the upstream facing port while the Hub Repeater has connectivity in the upstream direction This monitoring activity prevents propagation of erroneous indications in the upstream direction In particular this machine prevents babble and disconnect events on the downstream facing ports of this hub from propagating and causing the hub to be disabled or disconnected by the hub to which it is attached This allows the Hub to only disconnect the offensive port on detecting a babble from it 5 6 Power Switching The CY7C656xx includes interface signals for external port power switches Both ganged and individual per port config urations are supported with individual switching being the default Initially all ports are unpowered After enumerating the host may power each port by sending a SetPortPower command for that port The power switching and over current detection of downstream ports is managed by control pins connected to an external power switch device PWR n output pins of the CY7C656xx series are connected to the respective external power switch s port power enable
41. tics b7 field Default set to 0 Bit 3 Reserved Should be set to 0 Bit 2 GangPowered Indicates whether the port power switching is ganged set to 1 or per port set to 0 This is reported in the HubDescriptor wHubCharacteristics field b4 b3 b1 and bO Default set to 0 Bit 1 SingleTTOnly Indicates that the hub should only sup port single Transaction Translator mode This changes var ious descriptor values Default set to 0 Bit 0 Reserved Default set to 0 Byte 18 AmberPolarity GreenPolarity SelfPowerable Modulatelndicators PowerControlPolarity OverCurrent Polarity OverCurrentMode1 OverCurrentMode2 Bit 7 AmberPolarity Indicates the polarity of the amber indicator control Bit 6 GreenPolarity Indicates the polarity of the green in dicator control Bit 5 SelfPowerable Indicates whether the hub is capable of operating in self powered mode If 0 the hub is capable of bus powered operation only Bit 4 Modulatelndicators If this bit is set the indicator out puts will be modulated by a square wave of programmable frequency for power savings If 0 the outputs will be static Bit 3 PowerControlPolarity lIf set the power control out puts will be active HIGH If not set the power control out puts will be active LOW Bit 2 OverCurrentPolarity If set the over current inputs will be active HIGH If not set the over current inputs will be active LOW Bit 1 OverCurrentMode
42. tor CompoundDevice Full speedOnly NoPortindicators Reserved GangPowered SingleTTOnly Bit 7 IllegalHubDescriptor For GetHubDescriptor request some USB hosts use a DescriptorTypeof 0x00 instead of HUB_DESCRIPTOR 0x29 According to the USB 2 0 stan dard a hub must treat this as a Request Error and STALL the transaction accordingly USB 2 0 11 24 2 5 For sys tems that do not accept this the IllegalHubDescriptor con figuration bit may be set to allow CY7C656xx to accept a DescriptorType of 0x00 for this command Default is 1 Bit 6 CompoundDevice Indicates whether the hub is part of acompound device This is reported in the HubDescrip tor wHub Characteristics b2 Default set to 0 Bit 5 Fullspeed Only configures the hub to be a full speed only device Default set to 0 Bit 4 NoPortlndicators Turns off the port indicators and does not report them as present in the HubDescriptor wHubCharacteristics b7 field Default set to 0 Bit 3 Reserved Should be set to 0 Bit 2 GangPowered Indicates whether the port power switching is ganged set to 1 or per port set to 0 This is reported in the HubDescriptor wHubCharacteristics field b4 b3 b1 and bO Default set to 0 Bit 1 SingleTTOnly Indicates that the hub should only sup port single Transaction Translator mode This changes var ious descriptor values Default set to 0 Bit 0 Reserved Default set to 0 9 3 Configured 0xD4 Load Byte 0 0xD4
43. ult descriptors Updated EEPROM list to include 25LC080 Removed NoEOPatEOF1 bit Added LED polarity control Document 38 08037 Rev D Page 23 of 23

Cypress AN20639 Computer Hardware User Manual

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