Datasheet

PmodUSBUART™ Reference Manual
Copyright Digilent, Inc. All rights reserved.
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Page 2 of 2
Connector J2 – UART Communications
Pin
Signal
Description
1
RTS
Ready to Send
2
RXD
Receive
3
TXD
Transmit
4
CTS
Clear to Send
5
GND
Ground
6
SYS3V3
Power Supply (3.3V)
Table 1. Pinout description table.
3 SYS3V3 Select (Header JP1)
The board attached to the PmodUSBUART can have its 3.3V rail powered by the header JP1. If jumper JP1 is set to
SYS, then the SYS3V3 pin is powered by the VCC outputted by the FTDI chip. If the board attached to the
PmodUSBUART is powered on its own, the jumper should be set to LCL.
4 LEDs
There are two LED indicators on the PmodUSBUART. LD1 indicates a data transfer from the micro-USB connector
(J1) to the UART connector (J2). LD2 indicates a data transfer from the UART connector (J2) to the micro-USB
connector (J1).