Table 2-1. Pcb Interface Signals - Lantronix XPort Pro Integration Manual

Signal Name
GND
3.3V
Reset
Data Out
Data In
CP1/RTS
(Configurable Pin 1)
CP2/DTR
(Configurable Pin 2)
CP3/CTS/DCD
(Configurable Pin 3)
XPort Pro Integration Guide

Table 2-1. PCB Interface Signals

XPort Primary Function
Pro Pin
#
1 Circuit ground
2 +3.3V power in
3 External reset in
4 Serial data out (driven by built-in UART)
5 Serial data in (input to built-in UART)
6 CP1 can be configured as follows:
• Flow control: RTS (Request to Send) output driven
by the built-in UART for connection to CTS of attached
device.
• Programmable input/output: CP1 can be driven or
read through software control, independent of serial
port activity.
• RS485 Transmit Enable: In RS485 mode, CP1 is
driven by the built-in UART for connection to the
transmit enable pin of an RS485 Transceiver.
7 CP2 can be configured as follows:
• Modem control: DTR (Data Terminal Ready) output
driven by the built-in UART for connection to DCD of
attached device.
• Programmable input/output: CP2 can be driven or
read through software control, independent of serial
port activity.
8 CP3 can be configured as follows:
•
Flow control: CTS (Clear to Send) input read by the
built-in UART for connection to RTS of attached
device.
•
Modem control: DCD (Data Carrier Detect) input
read by the built-in UART for connection to DTR of
attached device.
• Programmable input/output: CP3 can be driven or
read through software control, independent of serial
port activity.
2: Description and Specifications
8