RTS XCP-16-DB9-T Ficha Técnica descarregar pdf (Página 12)

Document Reference No.: FT_000204

DB9-USB Datasheet

Version 2.1

Clearance No.: FTDI# 130

3.1.1 Male DB9 UART Connector Signals

The DB9-USB-X-M can be used to replace a male DB9 connector used for transmitting UART signals.

Table 2.1 gives the pin out description of each pin/pad of a UART connector/footprint.

Number

Pin Type of DB9-

USB module

Pad Type at

application PCB

Description

Input

DCD = Data Carrier Detect

Output

Input

RXD = Receive Data

(this is an output from the DB9-USB-X-M

to the application Rx input)

Input

Output

TXD = Transmit Data

(this is an input to the DB9-USB-X-M from

the application Tx output)

Input

Output

DTR = Data Terminal Ready

(this is an input to the DB9-USB-X-M from

the application DTR output)

Ground

GND = RS232 signal ground

Output

Input

DSR = Data Set Ready

(this is an output from the DB9-USB-X-M

to the application DSR input)

Input

Output

RTS = Request To Send

(this is an input to the DB9-USB-X-M from

the application RTS output)

Output

Input

CTS = Clear To Send

(this is an output from the DB9-USB-X-M

to the application CTS input)

Input

RI = Ring Indicator

Shield

Ground

Case Ground

Drain = typically connected to the host PC

case

Table 2.1 – Male DB9 UART Signal Description

Note 1: These signals are irrelevant for DTE to DTE connections.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 25 26

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