ISP1122 USB Hub Demonstration Board
Contents
1. Visit http www flexiusb com Interconnectivity Page 11 of 12 ISP1122 USB Hub Demonstration Board User s Manual 3 2 Bill of Material BOM Part Type 0 01uF ceramic capacitors Designator C26 C27 C28 C29 C40 C41 0 1uF ceramic capacitor C3 C6 C7 C8 C9 C10 C11 1uF TANT capacitors C4 C13 C16 4 7uF TANT capacitor C25 150uF Electrolytic capacitor C20 C21 C22 C23 C24 22pF ceramic capacitor C1 C2 NO O01 GO N 47pF ceramic capacitor C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 i e 100 kilo ohm 0805 R43 R44 R45 R46 R47 1 5 kilo ohm 5 0805 R21 10 kilo ohm 5 0805 R14 15 kilo ohm 5 0805 R22 R23 R24 R25 R26 R27 R28 R29 R30 o2 o 18 ohm 1 0805 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 k N 3 3 kilo ohm 0805 R32 R33 330 ohm 0805 R15 47 kilo ohm 0805 R34 R35 R36 R37 R38 Ferrite beads Murata BLM31P221SG FB1 FB3 FB5 FB7 FB9 FB11 FB13 FB15 FB17 FB19 FB21 FB23 Common mode choke filter Murata PLP3216S551SL2 FB2 FB6 FB10 FB14 FB18 6 MHz Crystal oscillator x1 5V 2 5A DC jack P1 USB A Receptacle Downstream port connectors J1 J2 J3 J4 J5 USB B Receptacle Upstream port connector JO ISP1122 Philips Semiconductors USB Hub controller SO32 package U1 PCA8581C PCF8582C 2 24C00 24C02. Individual No Inactive Nooverument Without Port 5 The demo board implements modes 4 and 5 using switch SW1 see Table 3 In these two modes the hub supports individual power control and individual overcurrent protection for downstream ports Table 3 Bus Self Powered Selection Switch Self Hybrid powered WARNING When supplying power through the DC jack make sure that SW1 is at position 1 2 indicating a self powered mode If SW1 is at position 1 3 bus powered mode the upstream supply and the local supply will be shorted 2 2 EEPROM Support INDV and OPTION pins can also be connected to an external serial EEPROM for Vendor ID Product ID customization and configuration setting The interfacing protocol is C The ISP1122 acts as the master and the EEPROM as the slave The I C clock frequency generated by the ISP1122 is slightly less than 100 kbits s to support low end EEPROM The following EEPROM models have been proven suitable PCA8581 PCF8582C 2 24C00 24CO01 Both the SCL OPTION and SDA INDV pins must be pulled up to Vcc a 3 3 kilo ohm value is recommended On power on ISP1122 detects the presence of the EEPROM through the Signature byte ZAAh If the signature is correct the content of the EEPROM will overwrite the default setting Table 4 lists the EEPROM s contents and Table 5 describes the configuration bits Philips Semiconductors Asia Product Innovation Cent
3. INDIRECT SPECIAL PUNITIVE OR OTHER DAMAGES WHATSOEVER INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION LOSS OF BUSINESS INFORMATION OR OTHER PECUNIARY LOSS ARISING OUT OF THIS AGREEMENT OR THE USE OF OR INABILITY TO USE THE PRODUCT EVEN IF PHILIPS SEMICONDUCTORS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 3 of 12 ISP1122 USB Hub Demonstration Board User s Manual Table of Contents PREFACE ME 4 1 INTRODUC HON 43 2 asean coste tte Ea aa aaa ea Ee n REAR IE Po Ei epo e e Rue Aae otio t LEY cast dI E ERR Ains 5 Ll Demo Board Features cn pee EE Eb ite dr ren 5 2 BOARD DESCRIPTION 6 2 1 Configuration Modes i eren e Rer Rer P shoe FEE Pn E na Rass Poe anne PUER ete eredi 6 2 2 EPPROM Econ MEME 7 2 3 Number of Downstream POrts eR e e ERR EEL SIE el Min EHE RR ERE RE SERE E gebe dee ge Edo L EE Ee E Eo ete d 9 ZA Factory Default Setting cocotte etre tree EE EE etate eb bara eee HIRED ea EFL Ee rg xe Ee Pee ERES e Fina Edara e HERE iaie 9 2 5 PCB Layout Considerations eet Ie ORE He t HEU PE RR ei Pe C dec E er tes ve pc he eue 9 EE Ou cr 10 3 L ISP1122 Pin Diagtam nou ie Eie EO ERE Ee Rite EE e ER ee ee Eo geo ER ee eo IER 10 32 Bill of Material BOM iniret pietre er seinere ie teeh
4. 1 EEPROM with C interface U2 PHP109 PMOS power transistor Q1 Q2 Q3 Q4 Q5 LED LED1 Switch DIP 6 SW3 Switch SPDT SW2 Switch DPDT SW1 TEST POINT TP1 Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 12 of 12 ISP1122 USB Hub Demonstration Board User s Manual 3 8 Component Placement Downstream Downstream Downstream Downstream Downstream Port 5 Port 4 Port 3 Port 2 Port 1 ais ro f E B Pe a EVALUATION BOARD REU 1 1 MAR SS PHILIPS SEMICDNDUCTORS ASIA PRDDOUCT INNOVATION CENTRE ISP1122 Figure 2 Component Placement of the ISP1122 Demo Board Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com
5. DatasheetDirect com Your dedicated source for free downloadable datasheets Over one million datasheets Optimized search function Rapid quote option Free unlimited downloads Visit www datasheetdirect com to get your free datasheets This datasheet has been downloaded by http www datasheetdirect com PHILIPS Philips Semiconductors Interconnectivity May 19 1999 ISP1122 USB Hub Demonstration Board User s Manual Revision 1 02 Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 2 of 12 ISP1122 USB Hub Demonstration Board User s Manual This is a legal agreement between you either an individual or an entity and Philips Semiconductors By accepting this product you indicate your agreement to the disclaimer specified herein DISCLAIMER PRODUCT IS DEEMED ACCEPTED BY RECIPIENT THE PRODUCT IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW PHILIPS SEMICONDUCTORS FURTHER DISCLAIMS ALL WARRANTIES INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANT ABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT THE ENTIRE RISK ARISING OUT OF THE USE OR PERFORMANCE OF THE PRODUCT AND DOCUMENTATION REMAINS WITH THE RECIPIENT TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL PHILIPS SEMICONDUCTORS OR ITS SUPPLIERS BE LIABLE FOR ANY CONSEQUENTIAL INCIDENTAL DIRECT
6. HER Lidia deu vale E bn ERES SERRE ERR E eg ae d ee ES eie ease Pone aig 11 3 3 Component Placemerit iip iere E rte etie eret ture ere Tite pe tid iere ate 12 Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 4 of 12 ISP1122 USB Hub Demonstration Board User s Manual PREFACE The Philips Semiconductors Hub ISP1122 is a state of the art 3 generation stand alone USB hub controller IC that complies with the latest USB Spec Rev 1 1 The major considerations for this board are 1 Interoperability 2 Reduction in the overall system cost 3 Ease of use We have relied on more than three years of our USB design and customer support experience to achieve these objectives Today our USB products already provide an industry benchmark for the interoperability tests Since interoperability problems result in the most expensive failures in the field we have further tightened the design specifications to address many ambiguities The IC has integrated many functions and offers features that reduce the major components of the total system cost We have employed many design techniques to reduce the EMI emissions increase the ESD resiliency and improve the manufacturing test criteria to insure a high quality product Our ultimate aim is to provide you with peace of mind when using our products in the total system solution We welcome your comments and suggestions to help us i
7. e is advantageous to differentiate between a disconnected and an unpowered device This makes it possible to keep communicating between the host and the device hub even if local power is lost Each composite setting of the three pins determines one configuration mode of the hub Therefore ISP1122 can be configured into eight modes Table 2 shows these configuration modes For a detailed description of these power management modes refer to the ISP1122 Power Management Design Guide document Table 2a Mode Selection Table Mode L0 0 O0 GLL234N GPSWN Inactive GOC_N 0 0o L GLL234N GPSWN Inactive GOCN 0 1 0 GLL234N GPSW N Inactive Inactive Foo 1 1 f GLL234N GLS_N GOC N 0 0 PSW1 2 3 4_N OC1 2 3 4_N o 1 PSW1234N PSW5_N OCL234 N OCSN 1 1 0 Pswi234N 7 GLI234N GL5N 0C1 23 4 N OCSN Inactive OCX_N pins must be tied to Vcc Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 7 of 12 ISP1122 USB Hub Demonstration Board User s Manual Table 2b Mode Selection Table Continued Mode Self Bus Power Switch GoodLink Overcurrent Remarks Powered control Protection 0 Bus powered Ganged Yes Global Ganged and bus powered Self powered Global Ganged and self powered 2 Buspowered Ganged Yes Inactive Nooverumen 2 6 Buspowered
8. meet USB spec voltage drop requirement 3 Put 150 uF capacitors as close as possible to the downstream ports These capacitors together with ferrite beads minimize voltage droop upon downstream ports hot insertion 4 Route each pair of the D and D lines close and parallel to each other and their length should be equalized This will ensure good symmetrical differential signal swing that enhances interoperability and also lower EMI Crystal oscillator should be placed close to ISP1122 6 Decoupling capacitors for the ISP1122 Vcc and V3 3 signals should be placed close to the pins fA Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 10 of 12 ISP1122 USB Hub Demonstration Board User s Manual 3 Appendix For schematic diagram and PCB layout refer to their respective SCH and PCB files 3 1 ISP1122 Pin Diagram V3 3 PSW2_N GL2_N OC1_N OC2_N OC3_N OC4_N OC5_N GOC_N DM4 DP4 SP BP_N HUBGL_N PSW3_N GL3_N SBaraninrzAaseenounnkwon ISP1122 PSW1_N GL1_N INDV SCL OPTION SDA RESET_N XTAL2 XTAL1 PSW5 N GL5 N GPSW N PSW4_N GL4_N Figure 1 Pin Diagram of ISP1122 Philips Semiconductors Asia Product Innovation Centre
9. mprove For more information about the ISP1122 and the latest updates to the design support document please visit the web site http www flexiusb com With Best Regards Team Members of the Asia Product Innovation Center Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 5 of 12 ISP1122 USB Hub Demonstration Board User s Manual 1 INTRODUCTION The ISP1122 demonstration board henceforth referred to as demo board is designed for evaluating the features and functionality of the ISP1122 integrated circuit IC This manual explains the schematic of the ISP1122 demo board demonstrates the PCB layout shows the Bill of Material BOM and describes the switches on the board 1 1 Demo Board Features USB Spec Rev 1 1 compliant Selectable bus or self hybrid powered operation Configurable number of downstream ports from 2 to 5 Customizable Vendor ID and Product ID through EEPROM Individual power switching and individual overcurrent protection Hub health indicator through GoodLink LED Verified interoperability with many systems and peripherals Check the continuously updated Interoperability report on the web site FCC Part 15 Subpart J Class B compliant e 8kV in circuit ESD protection Optional VID PID in external EEPROM 6 MHz crystal for lower EMI Bus or self powered GoodLink LED Individual pMOS switches built in overcurrent detectio
10. n USB Spec 1 1 compliant s m 2 2 4 Configurable from 2 to 5 ports Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 6 of 12 ISP1122 USB Hub Demonstration Board User s Manual 2 BOARD DESCRIPTION 2 1 Configuration Modes The INDV OPTION and SP BP N pins determine the hub configuration modes Users can set these signals to logic high or low The INDV and OPTION pins can also be used for connections to external EEPROM This allows for customized Vendor ID and Product ID among other configuration modes The contents of the EEPROM will be described later The three configuration pins are described in Table 1 Table 1 Mode Configuration Pins INDV Gang power switching and global overcurrent protection mode SCL 0 1 Individual power switching and individual overcurrent protection Bl eae RM MAE Both power switch and overcurrent protection functions are SDA EM active a OPTION SP BP_N Only one function is active in self powered mode the power switch control is inactive in bus powered operation the overcurrent protection is inactive Bus powered mode Self powered or hybrid powered mode Local Power Lost Indication 1 signifies a pull up high 1 Note The ISP1122 also supports hybrid self powered mode In this mode the hub controller draws power from upstream Vbus and local power is used for downstream ports Hybrid powered mod
11. present switch SW2 has to be set to EEPROM disabled state to correctly configure the board in the right mode of operation Modes 4 or 5 Table 6 EEPROM Enable Disable Switch EEPROM SW2 EEPROM enabled 12 EEPROM disabled Philips Semiconductors Asia Product Innovation Centre Visit http www flexiusb com Interconnectivity Page 9 of 12 ISP1122 USB Hub Demonstration Board User s Manual 2 3 Number of Downstream Ports The number of downstream ports for ISP1122 is configurable from 2 to 5 For bus powered mode the USB spec only allows for 4 downstream ports Table 7 lists the port number configuration which is set through switch SW3 Table 7 Number of Downstream Ports Setting SW3 1 12 3 10 5 8 Number of 2 11 4 9 6 7 Downstream Ports OFF OFF OFF 2 ON OFF OFF 4 ON ON OFF 3 ON ON ON 2 Illegal Note Bus powered mode can only have 4 downstream ports according to the USB spec 2 4 Factory Default Setting The factory default setting of the configuration switches are shown in Table 8 Table 8 Factory Default Setting Selection Default Self Bus powered Bus powered EEPROM No EEPROM disabled Number of Downstream Ports 4 2 5 PCB Layout Considerations The following PCB layout considerations are employed Route signal traces on the top layer as much as possible The bottom layer is reserved for ground routing This should minimize EMI issues 2 Power traces must be thick to
12. re Visit http www flexiusb com Interconnectivity Page 8 of 12 ISP1122 USB Hub Demonstration Board User s Manual Table 4 EEPROM Content idVendor lower byte default CCh idVendor higher byte default 2 04h idProduct lower byte default 2 22h idProduct higher byte default 11h Signature AAh OPTION pm Refer to mode selection table C2 RESERVED Should always be programmed to 0 Modifies the Hub Descriptor Field PwrOn2PwrGood C3 PwrOn2PwrGood _ 0 100 ms 32h 1 500 ms FAh e String Descriptor Disable String Descriptor C4 1 Enable String Descriptor String is Philips Semiconductors and Enable a 5 ISP1122 0 1 ok Disable internal analog overcurrent detection circuit When Internal Analog M disabled the overcurrent pins OCX_N convert to digital TTL C5 Overcurrent level Detection Enable i Enable internal analog overcurrent detection circuit Modifies the Configuration Descriptor Field MaxPower 00 100 mA 32h 01 500 mA FAh 1X 0 mA 00h Note denotes the internal default value when the EEPROM is not present C7 6 MaxPower Although the CO OPTION and C1 INDV bits can be programmed to any value the demo board hardware only supports Modes 4 and 5 That means these two bits must be programmed with CO OPTION 0 C1 INDV 1 for this demo board to work The EEPROM can be disabled through switch SW2 as shown in Table 6 When the EEPROM is not
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