user manual

Connectors

http://www.motorola.com/computer/literature 5-7

for these ports are tied to chassis ground. The pin assignments and signal

mnemonics for these connectors are listed in the next table.

Asynchronous/Synchronous Serial Port Connectors (J6 and J24)

The interface for the asynchronous/synchronous serial ports 3 and 4 is

provided by two HD-26 connectors, J6 and J24. The connector shields for

these ports are tied to chassis ground.

The pin assignments and signal mnemonics for Serial Port 3 are listed in

Table 5-5, and the pin assignments and signal mnemonics for Serial Port 4

are listed in Table 5-6.

Table 5-4. COM1 (J11) and COM2 (J10)

Pin Signal

1DCD

2RTS

3 GND

4TXD

5RXD

6 GND

7CTS

8DTR

Table 5-5. Serial Port 3 (J6)

Pin Signal Signal Pin

1 No Connect SP3_P14 14

2 TXD3 TXCI3 15

3 RXD3 SP3_P16 16

4RTS3 RXCI3 17

5 CTS3 LLB3 18