Silicon Laboratories Si3474-EVB User Manual Download Page 8 | Manualshive

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2. Software Drivers

The Si3474-EVB has a USB port, allowing it to communicate with computer host running Windows, Linux or MacOS. The installation
guide, documentation and software are available through the following download site.

Please go to

www.silabs.com/start-poe

and select the Si3474-KIT link.

UG425: Si3474 EVB User's Guide

Software Drivers

silabs.com

| Building a more connected world.

Rev. 0.1 | 8

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Summary of Contents for Si3474-EVB

Page 1: ...in 802 3bt mode or 802 3at mode To use the Si3474 in a mixed system it will be necessary to access the Si3474 registers through I2C The Si3474 EVB allows access to the Si3474 registers through a Silicon Labs CP2112 USB to I2C bridge A Python in terface is provided to allow evaluation through Windows PC Linux or MacOS comput ers KEY FEATURES IEEE 802 3bt compliant Up to Four 802 3bt Ports or Eight ...

Page 2: ...board Daughter Board and POE_BT_CB Board Schematics 9 3 1 Motherboard Schematics 9 3 2 Daughtercard Schematics 12 3 3 Connector Board Schematic 16 4 Si3474 Bills of Materials 17 4 1 Motherboard BOM 17 4 2 Daughtercard BOM 19 4 3 Connector Board BOM 19 silabs com Building a more connected world Rev 0 1 2 ...

Page 3: ...s for which the Si3474 responds to Note that each Si3474 device responds to two I2C Addresses because there are two quads in every Si3474 device Si347xy MB Baseboard Si3474 DC Daughter Card POE_BT_CB RJ45 Connector Board Isolation Boundary Figure 1 1 Si3474 EVB Baseboard Daughter Card and RJ45 Connector Board Figure 1 2 Si3474 EVB Daughter Card UG425 Si3474 EVB User s Guide Kit Description and Pow...

Page 4: ... The Si3474 EVB base board consists of Status LEDs Terminal Blocks for Power USB Connector AUTO Mode Selection Jumpers The RJ45 connectors are on a separate board called the POE_BT_CB The POE_BT_CB also has some jumpers in order to allow configuration of the RJ45 for either 802 3bt 4 pair port usage or for 802 3at 2 pair port usage It is easier to describe the use cases for the USB Connector Termi...

Page 5: ...T3 VOUT2 VOUT1 VOUT1 VOUT3 VOUT5 VOUT7 VOUT2 VOUT4 VOUT6 VOUT8 Figure 1 4 No I2C Host Eight 802 3at 2 Pair Ports The figure below shows the use case where the Si3474 is used as an 802 3bt PSE without an I2C Host The JP2 AUTO MODE SEL in this case can be set to either Position 1 2 3 4 or Position 5 The corresponding selection jumpers on the POE_BT_CB will need to be set to all Top positions Four of...

Page 6: ...1 jumper is placed so that the 5 V supply is derived from USB The 5 V USB rail supplies power to the Si3474 VDD albeit indirectly through isolation USB Type A USB Micro Type B 54V JP2 AUTO MODE SEL JP1 EXT 5VDC SEL USB 7 6 5 4 3 2 1 Hosted B O T T O P VOUT8 VOUT7 VOUT6 VOUT5 VOUT4 VOUT3 VOUT2 VOUT1 VOUT1 VOUT3 VOUT5 VOUT7 VOUT2 VOUT4 VOUT6 VOUT8 I2 C Addr 0 0 Reg 0x29 4 0 I2 C Addr 0 0 Reg 0x29 7 ...

Page 7: ...P2112 and the Host PC D7 Indicates that the Isolated 3 3V is present D3 Indicates that the Isolated VPWR is present Figure 1 7 Status LEDs Figure 1 8 Buttons UG425 Si3474 EVB User s Guide Kit Description and Powering Up the Si3474 EVB silabs com Building a more connected world Rev 0 1 7 ...

Page 8: ...unning Windows Linux or MacOS The installation guide documentation and software are available through the following download site Please go to www silabs com start poe and select the Si3474 KIT link UG425 Si3474 EVB User s Guide Software Drivers silabs com Building a more connected world Rev 0 1 8 ...

Page 9: ...c and PCB layout review Visit www siliconlabs com support to submit a support request for the review 3 1 Motherboard Schematics Figure 3 1 Motherboard Isolations UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 9 ...

Page 10: ...Figure 3 2 Motherboard Top UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 10 ...

Page 11: ...Figure 3 3 Motherboard USB Bridge UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 11 ...

Page 12: ...3 2 Daughtercard Schematics Figure 3 4 DC Schematic 1 UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 12 ...

Page 13: ...Figure 3 5 DC Schematic 2 UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 13 ...

Page 14: ...Figure 3 6 DC Schematic 3 UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 14 ...

Page 15: ...Figure 3 7 DC Schematic 4 UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 15 ...

Page 16: ...nnector Board Schematic Figure 3 8 Connector Board Schematic UG425 Si3474 EVB User s Guide Si3474 Baseboard Daughter Board and POE_BT_CB Board Schematics silabs com Building a more connected world Rev 0 1 16 ...

Page 17: ...1 Header 1x3 CONN 1X3 Samtec TSW 103 07 T S JP2 1 Header 1x2 CONN1X2 Samtec TSW 102 07 T S JS1 JS2 JS3 3 Jumper Shunt N A Samtec SNT 100 BK T J1 1 USB MICRO B RA MICRO USB PTH WURTH Wurth 6 29105E 11 J2 1 Socket 8 x 2 CONN2X8 SSW Samtec SSW 108 01 T D J3 1 Socket 1 x 16 CONN 1X16 Samtec SSW 116 01 T S J4 J6 2 Conn TRBLK 2 CONN TB 1757242 Poenix Contact 1757242 J5 1 Header 10 x 2 CONN2X10 RA 2MM Sa...

Page 18: ...0W 4992F R12 1 61 9 kΩ R0603 Venkel CR0603 16W 6192F R11 1 124 kΩ R0603 Venkel CR0603 16W 1243FT SO1 SO2 SO3 SO4 SO5 5 STANDOFF SPC Technology 2397 S1 S2 S3 3 SW Pushbutton SW4N10P4 5 Tyco Electronics 2 1437565 8 TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 10 Black Testpoint Kobiconn 151 203 RC T1 1 2 µH IND UTB00569S UMEC UTB02185s U1 1 Si88220 SO16N10 3P1 27 Silicon Labs Si88220EC IS U2 1 Si8605 SO...

Page 19: ... 0 2 R0805 Venkel LCR0805 R200F R9 1 0 R0603 Panasonic ERJ 3GEY0R00V TPV1 TPV2 TPV3 TPV4 TPV5 TPV6 TPV7 TPV8 8 TPV TP VIA N A N A U1 1 Si3474B QFN56M8X8P0 5E6 7 Silicon Labs Si3474B A01 IMR 4 3 Connector Board BOM Designator Qty Value PCB Footprint Mfr Mfr Part Number D1 1 Green LED 0805 K Lite On Inc LTST C170GKT JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 8 Header 1 x 3 CONN 1X3 Samtec TSW 103 07 T S JS1 JS...

Page 20: ...Class III devices applications for which FDA premarket approval is required or Life Support Systems without the specific written consent of Silicon Labs A Life Support System is any product or system intended to support or sustain life and or health which if it fails can be reasonably expected to result in significant personal injury or death Silicon Labs products are not designed or authorized fo...

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