SD394SPIEVK - Evaluation Board for LMH0394
Contents
1. LAYOUT NOTE VEC C5 next to pin3 of U1 LAY OUT NOTE D D resistors close to the vec R100 T Ja Oohm 1 oo 0603 J1 PF4 4 2 5a Too 4 vgc 2x5 pin Jumper dpen 5 RESETB MCU ee PES UVCON ce 2 pE7 UVec D R2_22 0hm 0603_D R3 22 0603 D GND D mini USB 5pin i UGnd VBUS UCap AGND R5 0803 ofa JP8 S d y LAYOUT NOTES o UCAP CAPAGQIT m Es VBus to bo N p pn i eo close to the MC 1 e co TVS Zener Diode LAYOUT NOTE Resistor close to the device JP7 GND PB4 CS I2S PDO SCL I25 1 SDA I2S TVS Zener Diode PB 7 0 PB1 PB3 PBO JP6 GND MCK SPI MOSI SPI MISO SPI SS SPI GND PES PBO PBI PB2 PB3 PB4 PBS PB6 AT90 AVR 8 Bit b LAYOUT NOTE C1 next to pin 52 pur of U1 vec IND TDI JTAG ITDO JTAG ITMS JTAG Vref RESETB o 6 ITCK JTAG 1uF S 21 22 23 24 2 PDO PD 7 0 IH XTALT Y1 LAYOUT NOTE _ C10 16MHz CRYSTAL pn C6 next to pin 2r of U1 SPF 5pF PD 7 0 PAS PA 7 0 RIA A0R08 PA4 ohm BI hos 4 s a4 LAYOUT NOTE LED Gr2. E M ERES 0111 Connector 2 FIGURE 10 ALP Startup Screen for the LMH0394 SD394SPI EVK User Guide 9 of 21 Rev 1 2 2010 National Semiconductor Corp Information Tab The Information tab is shown in Figure 11 Please note the device revision could be different I National Semiconductor Analog LaunchPAD Tasks ALP Nano USB 1 1 LMH0394 Nano Information Functional Registers Debug Registers Scripting amp amp ALP Nano USB 1 LMH0394 Ree EOS 3 Gbps HD SD SDI Extended Reach Adaptive Equalizer Device Revision 0 ALP Framework EE FIGURE 11 LMH0394 Information Tab SD394SPI EVK User Guide 10 of 21 Rev 1 2 Q 2010 National Semiconductor Corp Functional Tab The Functional tab is the main tab of the GUI and presents a high level view of the LMH0394 equalizer as shown in Figure 12 fj National Semiconductor Analog LaunchPAD grid Tasks KEES SM EE La ation Functional Registers Scripting amp ALP Nano USB 1 Revision 0 x LMHO394 lnut Swing Output Offset Initial Input Launch Amplitude Control gt Mute Reference Control r Cable Length ZT Coarse Amplitude y Launch Amplitude Fine Tuning Mute Ref Source y Digital Mute Ref Preferen
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4. ALP Nano 2 3 qw LMHO303 AU ES Fes Connector 2 feed Connector 1 ALP LPT MDIO 1 Te Gi qq DP83849 Y Port 1 W Port 2 ALP Framework Demo Mode FIGURE 19 Analog LaunchPAD in Demo Mode Disable the demo mode by selecting the Preferences pull down menu and un checking Enable Demo Mode FIGURE 20 Analog LaunchPAD Preferences Menu After demo mode is disabled the ALP software will poll the ALP hardware The ALP software will update and have only LMH0394 Nano under the Devices pull down menu SD394SPI EVK User Guide 17 of 21 Rev 1 2 2010 National Semiconductor Corp National Semiconductor Analog LaunchPAD Tasks p no USB AHO39 aru s ion Functional Registers Debug Registers Scripting amp amp ALP Nano USB 1 MH0394 LMH0394 Nano ches 3 Gbps HD SD SDI Extended Reach Adaptive Equalizer Device Revision 0 FIGURE 21 Analog LaunchPAD Screen with Demo Mode Off SD394SPI EVK User Guide 18 of 21 Rev 1 2 2010 National Semiconductor Corp SD394 Bill of Materials Reference Designator Description Manufacturer Manufacturer Part No C1 C2 C12 Capacitor 0 01uF 16V X7R 0402 Panasonic ECG ECJ 0EB1C103K C3 C7 C9 C16 Capacitor 4 7uF 6 3V X5R 0402 Panasonic ECG ECJ 0EB0J475M C5 C6 Capacitor 1uF 6 3V X5R 0402 Panasonic ECG ECJ 0EB0J105M C10 C11 Capacitor 0 1uF 16V X7R 0402 Kemet C0402C104K9RACTU D1 LED Green 0603 Lite On L
5. Universal Host Controller 2831 amp Intel R ICH8 Family USB Universal Host Controller 2832 amp Intel R ICH8 Family USB Universal Host Controller 2834 amp Intel R ICH8 Family USB Universal Host Controller 2835 6 Intel R ICH8 Family USB2 Enhanced Host Controller 2836 amp Intel R ICH8 Family USB2 Enhanced Host Controller 283A amp Sierra Wireless MC5725 Device gt USB Root Hub amp USB Root Hub 6 USB Root Hub Q9 USB Root Hub amp USB Root Hub 6 USB Root Hub 6 USB Root Hub FIGURE 18 Windows XP Analog LaunchPAD USB Driver The software should start with only LMH0394 Nano in the Devices pull down menu If there are more devices then the software is most likely in demo mode When the ALP is operating in demo mode there is a Demo Mode indication in the lower left of the application status bar as shown in Figure 19 SD394SPI EVK User Guide 16 of 21 Rev 1 2 2010 National Semiconductor Corp National Semiconductor Analog LaunchPAD Tasks ia amp amp ALP Board 1 g LMHO340 gA LMHO341 LMHO340 i LMHO341 amp ALP Board 2 r E gA DS32ELX0124 y D E 8A Connector 3 qq DS32ELX0124 2 qq DS32ELX0421 qq DS32ELX0421 amp amp ALP Board 3 f LMH6512 amp amp ALP Board 4 DP83640 m DP83640 amp amp ALP Board 5 i b z E LMHO340 X li 5 7T od N National i LMHO341 l 3 IL icion ex LM49350 s Anafog LaunchPAD ALP Nano 1 mes ALP100 lt CP104 Nano i amp amp
6. exe file to a temporary location that can be deleted later Make sure the SPA dongle is not connected to the PC The following installation instructions are for the Windows XP Operating System Install the ALP software Execute the ALP Setup Wizard program called ALPF monthdayyear major version minor version exe that was extracted to a temporary location There are 7 steps to the installation once the setup wizard is started 1 Select the Next button Select accept the agreement and then select the Next button Select the location to install the ALP software and then select the Next button Select the location for the start menu shortcut and then select the Next button There will then be a screen that allows the creation of a desktop and Quick Launch icon After selecting the desired choices select the Next button Select the Install button and the software will then be installed to the selected location 7 Uncheck Launch Analog LaunchPAD and select the Finish button The ALP software will start if Launch Analog LaunchPAD is checked but it will not be useful until the USB driver is installed Or Py GTS D Connect JP1 of the SD394 evaluation board to JP7 of the SPA dongle via the 6 pin parallel cable Power on the SD394 evaluation board with a 2 5 VDC power supply Connect the SPA dongle to the PC with the mini USB cable The Found New Hardware Wizard will open on the PC Proceed to the next sect
7. Bypass 00 Disable sleep mode Force equalizer to stay enabled 01 Sleep mode active when no input signal detected 10 Force equalizer into sleep mode powered down regardless of whether there is an input signal or not 11 Reserved 2 Reserved Reserved 1 R w oxo Master Reset 0 Normal operation 1 Reset registers and state machine O R W 0x0 Acquisition 0 Normal operation Reset 1 Reset state machine 3 0x01 Output Driver 3 0x02 Launch Amplitude 3 0x03 Digital MUTERef 3 0x04 Device ID 9 0x05 Equalizer Adaptation Control 3 0x06 Equalizer Adaptation Setting 1 3 0x07 Equalizer Adaptation Setting 2 3 0x08 Reserved ALP Framework zt FIGURE 14 LMH0394 Registers Tab with Verbose Descriptions SD394SPI EVK User Guide 13 of 21 Rev 1 2 Q 2010 National Semiconductor Corp ff National Semiconductor Analog LaunchPAD ALP Nano USB 1 1 LMH0394 Nano Information Functional Registers Scripting ALP Nano USB amp Value 88 Apply Refresh r i C verbose Descriptions v y v z S FIGURE 15 LMH0394 Registers Tab without Verbose Descriptions SD394SPI EVK User Guide 14 of 21 Rev 1 2 2010 National Semiconductor Corp The Display button provides another view of the register set and is depicted in Figure 16 The Display dialog supports the Windows copy command Ctrl c Register Display ALP Nano USB 1 LMH0394 Na
8. F 50V Y5V 0603 TDK Corporation C1608Y5V1H224Z C10 C11 2 CAP CERAMIC 12PF 50V NPO 0603 Kemet C0603C120J5GACTU C14 1 CAPACITOR TANT 4 7UF 16V 10 SMD Kemet T491A475K016AT C15 1 CAP CERM 33000PF 5 50V X7R 0603 AVX Corporation 06035C333JAT2A Osram Opto LS M670 H2L1 1 0 10 D1 1 LED TOPLED 628NM SUP RED CLR SMD Semiconductors R18 Z Osram Opto LSG T670 JL 1 0 JL 1 0 D5 D2 2 LED TOPLED 628 570 RED GRN 4PLCC Semiconductors 10 R18 Z Fairchild D3 1 DIODE HI CONDUCTANCE 100V LL 34 Semiconductor FDLL4148 JP1 JP2 JP3 3 CONN HEADER VERT 100 SPOS 15AU AMP Tyco 87224 3 JP6 JP7 2 CONN HEADER VERT 100 6POS 15AU AMP Tyco 87224 6 JP8 1 CONN HEADER VERT 100 4POS 15AU AMP Tyco 87224 4 J3 1 CONN RECEPT MINI USB2 0 5POS Hirose UX60 MB 5ST J7 1 HEADER 5x2 0 1 3M ESD 929836 02 05 RK R1 R4 R5 R16 R20 R100 6 RES ZERO OHM 1 10W 5 0603 SMD Panasonic ERJ 3GEYOROOV R2 R3 2 RES 22 OHM 1 16W 3300PPM 5 0603 Panasonic ERA V33J220V R6 R7 R101 R102 R103 5 RES 47K OHM 1 16W 1 0603 SMD Panasonic ERA 3AEB473V R13 R14 R17 R22 R23 5 RES 1 0K OHM 1 16W 1 0603 SMD Panasonic ERA 3AEB102V R18 R15 2 RES 100K OHM 1 16W 1 0603 SMD Panasonic ERA 3AEB104V R19 1 RES 120K OHM 1 16W 1 0603 SMD Panasonic ERA 3AEB124V SW1 SW2 2 SWITCH TACT APEM Components ADTSM31NV U1 1 IC AVR MCU 128K 64QFN Atmel AT90USB1287 16MU U4 1 IC REG LDO 300MA ADJ 8MSOP National Semiconductor LP3982IMM ADJ NOPB Y1 1 CRYSTAL 8 00MHZ 8PF FUND SMD NDK NX5032GA 8MHZ AT W Schematics following pages SD394S
9. MH0394 is in SPI mode To use the SPI interactive GUI plug the 6 pin parallel cable between this header and JP7 on the SPA dongle The SPA dongle requires special software and must be connected to the PC via the USB see the Software Setup section Carrier Detect LED D1 D1 shows the status of Carrier Detect This LED is GREEN when an input signal has been detected and OFF when no input is detected D1 shows the status of Carrier Detect while in Pin Mode or SPI Mode SD394SPI EVK User Guide 3 of 21 Rev 1 2 2010 National Semiconductor Corp Typical Performance Equalizer Output Figures 4 5 and 6 show output waveforms for the SD394 with various Belden 1694A cable lengths The input signal is a 2 97 Gbps PRBS10 and the output signal is measured on the Agilent DCA J 86100C oscilloscope FIGURE 4 SD394 Output Waveform at 2 97 Gbps with 160m Belden 1694A Cable SD394SPI EVK User Guide 4 of 21 Rev 1 2 2010 National Semiconductor Corp FIGURE 6 SD394 Output Waveform at 270 Mbps with 400m Belden 1694A Cable SD394SPI EVK User Guide 5 of 21 Rev 1 2 2010 National Semiconductor Corp Input Return Loss Figure 7 shows input return loss of the LMH0394 as measured at the BNC on the SD394 The return loss is measured using the Agilent 8722ES VNA with a 75Q BNC to 75Q Type N connector on the input Note that return loss is layout dependent 22 LOG 5 dB REF dB 1 16 675 dB 2 136 125 874 GHz SMPTE LIMIT Lv A eT
10. PI EVK User Guide Rev 1 2 19 of 21 2010 National Semiconductor Corp LMH0394 LMH0384 VCC PST1 2 5V 3 3V R5 3 16K 0 R7 3 16K 0 R9 3 16K 0 R6 9 76K Do Not Load R8 9 76K Do Not Load R10 9 76K Do Not Load Do not place JP2 JP4 in SPI Mode PSTI vec vec 1 vec JP Power Supply Terminal Ls L da 1 Bae BYPASS 4 7UF 0 1UF Q IUF 0 01UF PST2 P GND BYPASS GND 1 y Power_Supply_Terminal GND Place C1 C16 amp C2 as close to U2 pin as possible CC tCl6 I cl 47UF 0 01UF LAYOUT NOTE Z50 n W 40MIL ZO 50 5 GND SMA R EDGE C3 m ZDIFF100P_12 T 77 SDI LAYOUT NOTE L n Z75 m W 20MIL ZO 754 5 Sen di Z75 1 k 4 ZDIFFA 75 1UF RII C6 GND BNC EDGE 0 GND 1UF ZDIFFIOON 12 T 773 R4 R3 374 SMA R EDGE JPA 75 GND RS EK SPI_Connector_SCK 4 MUTE SCK Me AUTOSLP MISO Tu MIS s 9 76K GND SS GND HDR 6 v IPS GND MUTEREF LMHO394 LMHO384 SPI Header Y GND HDR 2 pes BYPASS CDb MUTEREF 9 76K R8 V GND SPI Connector SSb ok VEE SSb VEE SSb 3 16K R9 9 76K RIO vy LMHO394 LMH0384 SPI Mode Pin Mode Select JP6 JP9 GND 3 pur LAYOUT NOTE Ferrite amp capacitors Close to the MCU vge PF 7 0
11. SD394SPIEVK FVK UeerManual N LMH0394 Evaluation Board with SPI Interactive GUI User Guide October 14 2010 Overview The SD394SPI Evaluation Kit EVK enables evaluation of the LMH0394 3G HD SD SDI Adaptive Cable Equalizer A graphical user interface allows managing the SPI registers of the LMH0394 device Evaluation Kit Contents The EVK contains the following parts SD394EVK board assembly with the LMH0394 cable equalizer SPA dongle SPI USB card USB cable 6 pin parallel cable SD394SPIEVK User Guide Evaluation Board Description Figure 1 shows the SD394 evaluation board and highlights some of its features DC Power Supply Connectors LMH0394 750 BNC SDI Input Connector 3 500 SMA SDO Output J3 a Connectors SDO 4 n Rev A SPI Mode Pin Mode Select JP6 JP9 MUTERer JP5 Pin Mode Controls CD MUTE BYPASS AUTO SLEEP JP2 JP4 Carrier Detect SPI Header JP1 FIGURE 1 SD394 Evaluation Board SD394SPI EVK User Guide 1 of 21 Rev 1 2 2010 National Semiconductor Corp SDI Input and SDO Output The SDI input connector J1 is a 75Q BNC connector The SDI input should conform to the SMPTE 424M SMPTE 292M or SMPTE 259M standards The SDO output connectors J2 and J3 are 500 SMA connectors The SDO output connectors have onboard 4 7uF AC coupling capacitors C3 and C7 When using only one side of the output pair the other side should be terminated with a 50Q SMA terminati
12. TST C190GKT J1 BNC 75 ohm Amphenol edge launch Amphenol 031 6009 J2 J3 SMA 50 ohm edge launch Johnson Components 142 0701 851 JP1 Header 6x1 0 1 3M ESD 929647 01 06 I a A e eam ama alo a afro a mim EN E M JP2 Header 3x2 0 1 3M ESD 929665 01 03 I JP3 JP4 JP6 JP7 JP8 JP9 Header 3x1 0 1 3M ESD 929647 01 36 I JP5 Header 2x1 0 1 3M ESD 929647 01 02 I L1 Inductor 5 6nH 0402 Murata LQP15MN5N6B02D PST1 PST2 Power Supply Terminal Keystone 1287 ST R1 Resistor 300 ohm 1 10W 595 0603 Panasonic ECG ERJ 3GEYJ301V R2 R3 Resistor 75 ohm 1 16W 195 0402 Yageo America RC0402FR 0775RL R4 Resistor 37 4 ohm 1 16W 1 0402 Vishay Dale CRCW040237R4FKED R5 R7 R9 Resistor 3 16k ohm 1 10W 196 0402 Panasonic ECG ERJ 2RKF3161X R6 R8 R10 Resistor 9 76k ohm 1 10W 195 0402 Panasonic ECG ERJ 2RKF9761X R11 Resistor 0 ohm 1 10W 595 0402 Panasonic ECG ERJ 2GEOROOX U2 LMH0394 Cable Equalizer LLP 16 National Semiconductor LMH0394SQ SPA Dongle Bill of Materials Reference Designator Qty Description Manufacturer Manufacturer Part No CR2 CR1 2 SUPPRESSOR ESD 24VDC 0603 SMD Littelfuse Inc PGB1010603MR C1 C2 C3 C4 C5 C6 C100 7 CAP CER 1UF 50V 1096 X7R 0603 Murata GRM188R71H104KA93D C7 1 CAPACITOR TANT 1 0UF 16V 10 SMD Kemet T491A105K016AT C8 C9 2 CAP CER 22U
13. Te Z START 656 aaa aaa GHz STOP 3 666 666 aaa GHz FIGURE 7 SD394 Input Return Loss SD394SPI EVK User Guide 6 of 21 Rev 1 2 2010 National Semiconductor Corp SPA Dongle Description The SPA dongle is required to use the SPI interactive GUI The SPA dongle connects between the USB connector J3 and the USB input of a PC The SPA dongle is shown in Figure 8 JP7 is the SPI Header The SPA dongle is powered through the USB and the D1 LED is RED when the SPA dongle is connected to a PC via the USB to indicate the board is powered SPI Header MADE IN USA M s 3 3 4 4 R 3pm e AO leNeuexel K Pelee A NSC 2009 TO uw Y 2 Ab lt a 3 zs R17 Me A PA m F R1 As A MPAA D LN Ii wo gt eIR5 f LIE USB A Connector Power Indicator FIGURE 8 SPA Dongle Figure 9 shows the connection between the SD394 and the SPA dongle For proper operation the SPI pins must be connected between the SD394 JP1 and the SPA dongle JP7 boon FIGURE 9 SD394 Connection to SPA Dongle SD394SPI EVK User Guide 7 of 21 Rev 1 2 2010 National Semiconductor Corp Software Setup System Requirements Operating System Windows XP or Vista USB 2 0 Installation Download the latest software from the LMH0394 Evaluation Board page which can be found on the Boards tab in the LMH0394 product folder Extract the ALPF_monthdayyear_major version minor version exe ex ALPF 06142010 128 0104
14. ce Gods F Pin Mode Osa Obigtal y 150 v Output Sing m EE ae mo Jw tp offset fana Digtal Mute Re Setting Lee v Offset from Nominal 10 Approx Cable Length m 0 0 dB 132 18 Output Deemphasis Control Sleep State LMH0394 Sleep State Output Mute r Output Deemphasis Deemphasis Setting Qon m Not Sleeping Off mim on NEL Sigal Present Deemphasis Enable ee BH E HD Cable Range Y Equalizer Bypass Off DC Restore Bypass scr off Deemphasis Setting _ 53 dB J mu Max HD Cable Length f LMH0394 Reset 210 Max HD Cable Length m m au j gt lt i gt ALP Fri FIGURE 12 LMH0394 Functional Tab SD394SPI EVK User Guide 11 of 21 Rev 1 2 2010 National Semiconductor Corp Registers Tab The Registers tab displays all registers for the LMH0394 equalizer Figure 13 shows the Registers tab The Value field indicates the value of the currently selected register I National Semiconductor Analog LaunchPAD Sle I ALP Nano USB 1 1 LMH0394 Nano x Information Functional amp amp ALP Nano USB 1 qq LMHO394 i Value 00 Apply Refres v Verbose Descriptions 3 0x00 General Control 9 0x01 Output Driver 3 0x02 Launch Amplitude 3 0x03 Digital MUTERef 3 0x04 Device ID 3 0x05 Equalizer Adaptation Control 3 0x06 Equalizer Adaptation Setting 1 3 0x07 Equalizer Adaptation Setting 2 3 0x08 Reserved ALP F
15. een Red Group LEDs line D5 Ri 0g03 PA6 1Kohi LED Green Red vec 014 7uF D1 LED super red O R24 0803 Oohm_open DO NOT LOAD R21 If R21 is loaded DO NOT MOUNT R20 DO NOT MOUNT U4 allow use of 3 3V from U1 internal 13 Kohm 603 Vcc3 D3 U4 R18 L8 100Kohm OUT FAULT VBUS p gt 1 5VT z N ISDN z 0603 R GND cc SS DIODE 4 OUT sET 4 4 REG LDO 15 PDO E bossuF U4 OUT 1 25 1 HR15 R18 R19 This w reguator vec vge 6 ja 7Kohm 7Kohm 603 603 n RESETB t O sw O sw2 E RST o SPST 22uF HWB o SPST 22uF i Title Reset Circuit Bootloader Atmel Dongle Card Activation Bize Document Number B Atmel Dongle Card Rev 1 Rev of Date Thursday November 06 2008 Bheet 1 of E IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgment TI warrants perfor
16. ion to install the USB driver Install the USB driver There are 6 steps to install the USB driver 1 Select No not at this time then select the Next button 2 Select Install from a list or specific location then select the Next button 3 Select Search for the best driver in these locations Uncheck Search removable media and check Include this location in the search 4 Browse to the Install Directory which is typically located at C Program Files National Semiconductor Corp Analog LaunchPAD vx x x Drivers and select the Next button Windows should find the driver 5 Select Continue Anyway 6 Select the Finish button The software installation is complete The ALP software may now be launched as described in the next section SD394SPI EVK User Guide 8 of 21 Rev 1 2 2010 National Semiconductor Corp Software Description Startup Make sure all the software has been installed and the hardware is powered on and connected to the PC Execute Analog LaunchPAD from the start menu The default start menu location is Programs National Semiconductor Corp Analog LaunchPAD vx x x Analog LaunchPAD The application should come up in the state shown in Figure 10 below If it does not see Trouble Shooting at the end of this document Click on LMH0394 Nano to select the device and open up the device profile and its associated tabs f National Semiconductor Analog LaunchPAD o Connector 4
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18. no Connector 1 Register Display ALP Nano USB 1 LMHO394 Nano Connector 1 Register Data Name 0x0000 0x88 General Control 0x0001 O xA2 Output Driver Ox0002 0x40 Launch Amplitude O0x0003 Ox1F Digital MLITERef 0x0004 0x10 Device ID 0x0005 0x35 Equalizer Adaptation Control OxO0006 Ox64 Equalizer Adaptation Setting 1 O0x0007 Ox9C Equalizer Adaptation Setting 2 ox0008 0x00 Reserved FIGURE 16 LMH0394 Register Display The Load and Save buttons provide a handy mechanism for restoring or saving the register set external to the evaluation board SD394SPI EVK User Guide 15 of 21 Rev 1 2 2010 National Semiconductor Corp Trouble Shooting If the following window Figure 17 opens after starting the ALP software double check the hardware setup No Devices Detected 1 No attached ALP based USB boards were detected The application will run in demonstration device emulation mode FIGURE 17 Analog LaunchPAD No Devices Error It may also be that the USB driver is not installed Check the device manager There should be an NSC ALP Nano Atmel device under the Universal Serial Bus Controllers as shown in Figure 18 Device Manager File Action View Help E m amp DP mma Sound video and game controllers System devices Universal Serial Bus controllers 6 Generic USB Hub G Generic USB Hub amp Intel R ICH8 Family USB Universal Host Controller 2830 amp Intel R ICH8 Family USB
19. o CD to allow automatic mute operation if the SDI signal is not SD394SPI EVK User Guide 2 of 21 Rev 1 2 Q 2010 National Semiconductor Corp present To activate mute and force the outputs into a muted condition set the jumper to pull MUTE to VCC To turn off mute so that the outputs will never mute set the jumper to tie MUTE to GND For normal operation set the jumper to tie CD to MUTE for automatic mute control The MUTE pin has an internal pulldown to disable mute so JP2 may be left unconnected and the device will never mute BYPASS JP3 JP3 allows control of the equalization BYPASS function To put the device into bypass mode set the jumper to pull BYPASS to VCC To turn off bypass for normal operation set the jumper to pull BYPASS to GND The BYPASS pin has an internal pulldown to disable bypass so JP2 may be left unconnected for normal operation AUTO SLEEP JP4 JP4 allows control of the AUTO SLEEP function To put the device into auto sleep mode in which it will power down when no input is detected set the jumper to pull AUTO SLEEP to VCC To turn off auto sleep and prevent the LMH0394 from automatically powering down set the jumper to pull AUTO SLEEP to GND The AUTO SLEEP pin has an internal pullup to enable auto sleep so JP4 may be left unconnected to enable auto sleep mode SPI Header JP1 JP1 is the SPI Serial Peripheral Interface header It allows access to the SPI pins SS MISO MOSI and SCK while the L
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21. on For example when only using the SDO output SDO should be terminated with a 50Q SMA termination DC Power Connectors The VCC and GND power connectors PS1 and PS2 respectively should be powered with a DC input voltage of 2 5V 5 SPI Mode Pin Mode Select JP6 JP9 JP6 JP7 JP8 and JP9 are used to select between SPI Mode or Pin Mode To select Pin Mode set these jumpers in the down position as shown in Figure 2 To select SPI Mode set these jumpers in the up position as shown in Figure 3 For proper operation either Pin Mode or SPI Mode must be selected Do not leave JP6 JP9 open SPI MODE SPI MODE PIN MODE PIN MODE FIGURE 2 Pin Mode Select FIGURE 3 SPI Mode Select MUTErer JP5 JP5 allows control of the MUTEggr function and may be used in either Pin Mode or SPI Mode MUTERer is an input voltage used to set the threshold for CD The MUTErer DC input voltage should be between OV and 2 5V Refer to the LMH0394 datasheet for details Leave JP5 unconnected for normal operation Pin Mode Controls JP2 JP4 JP2 JP3 and JP4 are used to control the CD and Mute Bypass and Auto Sleep functions while the device is configured in Pin Mode Do not place jumpers on JP2 JP3 or JP4 while the device is configured for SPI Mode CD and MUTE JP2 JP2 allows Carrier Detect CD monitoring and MUTE control CD is high when no input signal is present MUTE may be used to force the outputs on or off or tied t
22. ramework E FIGURE 13 LMH0394Registers Tab Each register can be examined in detail by either double clicking on the desired registers fold bar with the address and the register name e g 0x00 General Control or by single clicking the icon at the right of the fold bar two inverted carats The Refresh button will re read the currently selected register and the Refresh All will read all registers in the device Changes may be made to the registers by checking or un checking the individual register bits or typing in a new register value in the Value field After setting the appropriate register value the Apply button must be pressed to apply the changes The detailed view of the General Control register is shown in Figure 14 with Verbose Descriptions checked and Figure 15 with Verbose Descriptions un checked SD394SPI EVK User Guide 12 of 21 Rev 1 2 2010 National Semiconductor Corp f National Semiconductor Analog LaunchPAD ALP Nano USB 1 1 LMH0394 Nano Information Functional Registers Scripting amp amp ALP Nano USB qq LMHO394 Value 88 Apply Refresh All Verbose Descriptions in R 0x1 Carrier Detect 0 No carrier detected 1 Carrier detected 6 R w oxo Mute Mute has precedence over Bypass 0 Normal operation 1 Outputs muted sC R w oxo Bypass 0 Normal operation 1 Equalizer bypassed 4 3 R W 0x1 SleepMode Sleep mode control Sleep has precedence over Mute and
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