User Manual

Cordless Serial Adapter User Guide

Document#: 6410-00000 A CONFIDENTIAL Revision 0.9

3 Hardware Interface

3.1 CSA Pin Assignments

The pin assignments are per the DB9 RS-232 convention but offer some options for non-

standard configurations.

Signal Name Function Direction Pin #

PIO_2 DCD – Carrier detect IN 1

UART_RXD RXD serial data from local host IN 2

UART_TXD TXD serial data to local host OUT 3

PIO_4 DTR Data terminal ready OUT 4

GND Ground 5

PIO_3 DSR Data set ready IN 6

UART_RTS RTS Request to send to local host OUT 7

UART_CTS CTS Clear to send from local host IN 8

CABLE_POWER Optional power input (3.3 to 5.0 Vdc) 9

Table 3: DTE Pin Assignment

3.2 Power Supply

Power over pin 9 (must be able to supply a minimum of 160mA at 3.3V to 5V )

External – use the same power adapter as GPS (includes 2 European and one Australian power

connectors)

3.3 Indicator LEDs

Bluetooth LED (one LED only in different states):

• LED flashing one time every two seconds CSA is powered but not discoverable or

connectable.

• LED flashing two times every two seconds CSA is waiting to connect.

If acting as ACCEPTOR connectable. If acting as INITIATOR waiting for local host to

issue command to initiate the connection.

• LED flashing three times every two seconds CSA is connected.