Micro Technic PV-1800 RS232 port CN6, Setting up RS232, RS232 connector CN6, Pin no CN9

Users Manual & Installation Guide

PV- 1800: Power supply module with GSM MODEM

AT commands

All functions of the modem are carried out by AT commands from a computer application. For documentation of the AT command set please see “Integrators Manual” for GM47 from Sony Ericsson, at http://www.eurodis.com/wireless/htm/suppliers_sonyericsson.asp

Modem on/off

The PV-1800 has circuitry that automatically turns the modem on after a system reset, by activating its ON/OFF input. From software, you can later activate the ON/OFF input, please see section PV- 1800 register interface.

RS232 port (CN6)

The PV-1800 is equipped with a 16C550 compatible RS232 port which can be accessed through a 10pin boxheader (CN6).

Setting up RS232

The setup of the serial port is configured by two jumper blocks.

The address is set by placing one or more jumpers in the positions 4 to 6 in section COM_B. The table shows how different COM ports can be configured:

	ST1		Base address
4	5	6	COM_B
0	0	0	Disabled
0	0	1	2C8
0	1	0	2D8
0	1	1	2E8 (COM4)
1	0	0	2F8 (COM2)
1	0	1	3D8
1	1	0	3E8 (COM3)
1	1	1	3F8 (COM1)

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This table is also printed on the board.

The IRQ used for the RS232 is set in section IRQ_B. Place one jumper in this section to select an IRQ number in the interval IRQ3 to IRQ15.

RS232 connector (CN6)

The serial connector is a 10pin 2.54mm boxheader placed on the edge of the PV-1800 module. This pinout is chosen so that a 10-wire ribbon cable with a 10-pin connector in one end and a DB9 male connector in the other end can be used. In this way, the DB9 male connector acts like a serial port in a PC.

Function	Pin no CN9	Pin no CDB-9M	I/O
GND	1	5
RI	2	9	I
DTS	3	4	O
CTS	4	8	I
TxD	5	3	O
RTS	6	7	O
RxD	7	2	I
DSR	8	6	I
CD	9	1	I
N.C.	10

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