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SECO104-CX700M
User Manual - Rev. First Edition: 1.0 - Last Edition: 3.1 - Author: S.B. - Reviewed by G.M.
3.3.9 Utility Connector
CN9 connector provides signals for PS/2 mouse and keyboard. It also makes available a
SW_RESET (internally pulled-up to Vcc) line on pin 3, so closing this pin to GND cause the reset
of the board.
CN9 is a dual row, 10 pin, pitch 2mm, "standard flat" connector, right angle, type MATSUYAMA
LN710 or equivalent.
Pin 1 is deserved to connect an external 3V battery to backup the RTC and CMOS if the internal
battery fails; remember the board does not provide recharge circuitry for this external battery.
3.3.10 COM2 RS232/RS422/RS485 Serial Port Connector
CN10 connector provides RS232 (full modem) / RS422 / RS485 configurable signals for COM2
serial port. Relative I/O base address, IRQ and interface mode can be selected in BIOS
configuration utility.
The following table shows pin assignment for CN10 connector regarding interface mode chosen.
PIN
1
DCD_2
2
DSR_2
3
RX_2
4
RTS_2
5
TX_2
6
CTS_2
7
DTR_2
8
RI_2
9
GND
10
GND
CN9 - UTILITY CONNECTOR
PIN
1
Auxiliary backup battery
2
GND
3
SW_RESET
4
MSDATA
5
KBDATA
6
KBDCLK
7
GND
8
+5 VDC
9
NC
10
MSCLK
CN10 - COM2 CONNECTOR
RS-232
Tx -
Tx +
Rx +
Rx -
Copyright © 2011 SECO s.r.l.
SECO104-CX700M
SIGNAL
SIGNAL
RS-422
TX- / Rx-
Tx+ / Rx+
pag. 23
RS-485
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