IBM SAGP-845EV user manual Serial Ports, COM1 10-pin Connector, COM2 10-pin Connector, Description

3.4Serial Ports

SAGP-845EV offers two high speed NS16C550 compatible UARTs with Read/Receive 16-byte FIFO serial ports.

•COM1 10-pin Connector

PIN	Description
1	DATA CARRIER DETECT (DCD)	1	6
2	RECEIVE DATA (RXD)
3	TRANSMIT DATA (TXD)
4	DATA TERMINAL READY (DTR)
5	GROUND
6	DATA SET READY (DSR)	5	10
7	REQUEST TO SEND (RTS)
8	CLEAR TO SEND (CTS)
9	RING INDICATOR (RI)
10	NC

•COM2 10-pin Connector

PIN	Description
1	DATA CARRIER DETECT (DCD)	1	6
2	RECEIVE DATA (RXD)
3	TRANSMIT DATA (TXD)
4	DATA TERMINAL READY (DTR)
5	GROUND
6	DATA SET READY (DSR)	5	10
7	REQUEST TO SEND (RTS)
8	CLEAR TO SEND (CTS)
9	RING INDICATOR (RI)
10	NC

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