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SMSC USB3340 EVB

USER MANUAL

Revision 1.1 (12-14-10)

 

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EVB-USB3340 USB Transceiver 

Evaluation Board User Manual

Summary of Contents for EVB-USB3340

Page 1: ...t SMSC products are not designed intended authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property...

Page 2: ...operation the USB3340 EVB must provide 5 Volts on VBUS at the USB connector The USB3340 EVB includes a switch that can drive VBUS using the 5 Volt supply that comes from pin 28 of the T MT connector...

Page 3: ...als may result at the micro AB connector PCB footprint 2 6 VBUS Present Detection The USB controller must detect VBUS when a USB cable is attached in device mode or when the USB controller turns on VB...

Page 4: ...ust be made 1 Install R13 zero ohm resistor This connects the VBUS 5V switch to the VBUS signal 2 Remove R23 This is the RVBUS value required for a USB Device 3 Install R10 1 0K 1W resistor This is th...

Page 5: ...UTPUT 15 SPKR_L In USB Audio mode SPKR_L is connected to the DP pin via an analog switch in the USB3340 IN OUT 45 SPKR_RM In USB Audio mode SPKR_RM is connected to the DP pin via an analog switch in t...

Page 6: ...3340 EVB is powered on check the following things to be certain the board is functioning normally RESET should be de asserted logic low at the T MT connector and RESETB at the USB3340 should be logic...

Page 7: ...1 8V This is the 1 8V regulator output 4 Protecting VBUS from Non Compliant VBUS Voltages The USB3340 is fully tolerant to VBUS voltages up to 30V An external resistor on the VBUS line RVBUS is requi...

Page 8: ...12 GND B25 GND A27 GND B1 R10 1 0k 1W R10 1 0k 1W C13 0 1uF 10V C13 0 1uF 10V TP5 TEST_POINT TP5 TEST_POINT C14 1 0uF 16V C14 1 0uF 16V R33 27 1 16 W R33 27 1 16 W U1 USB33XX QFN32 U1 USB33XX QFN32 CL...

Page 9: ...NIC ERJ 2RKF8061X Yes 14 3 R3 R4 R12 R13 R26 R28 R25 R27 R30 RESISTOR ZERO OHM 1 16W 5 0402 SMD 311 0 0JRCT ND YAGEO RC0402JR 070RL Yes 15 3 R6 R11 R14 R15 R16 R5 R8 RESISTOR 10 0K OHM 1 16W 1 0402 SM...

Page 10: ...n 1 1 12 14 10 10 SMSC USB3340 EVB USER MANUAL 7 User Manual Revision History Table 7 1 Customer Revision History REVISION LEVEL DATE SECTION FIGURE ENTRY CORRECTION Rev 1 1 12 14 10 R9 on Schematic a...

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