IBM PSB Form Factor Board SAGP-845EV User Manual

Page 13

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13

3.4 Serial

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)

2

RECEIVE DATA (RXD)

3

TRANSMIT DATA (TXD)

4

DATA TERMINAL READY (DTR)

5 GROUND
6

DATA SET READY (DSR)

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)

2

RECEIVE DATA (RXD)

3

TRANSMIT DATA (TXD)

4

DATA TERMINAL READY (DTR)

5 GROUND
6

DATA SET READY (DSR)

7

REQUEST TO SEND (RTS)

8

CLEAR TO SEND (CTS)

9

RING INDICATOR (RI)

10 NC

1

6

5

10

1

6

5

10