AMD PCM-5820 manual Serial ports CN16, CN14, 2.15.1 COM1 RS-232 port CN16

Configuration of the audio interface is done completely via software utilities.You don't have to set any jumpers. For furhter information, please refer to Chapter 6 for audio setup details.

2.15 Serial ports (CN16, CN14)

The PCM-5820 Series offers two serial ports: one RS-232 and one RS-232/422/485. These ports allow you to connect to any serial device (a mouse, printers, etc.) or communication network.

2.15.1 COM1 RS-232 port (CN16)

The serial port connectors are mounted on the bottom edge of the card. The 9-pin D-SUB connector to the left of the card is the RS-232 port.

2.15.2 COM2 RS-232/422/485 selection (CN14)

The secondary port located above COM1, consists of a 14-pin, dual-in-line, male header and can be configured to operate in RS-232, RS-422, or RS-485 mode. This is done via J4.

Table 2-4: COM2 selection (J4)

*RS-232 RS-422 RS-485

1	3	5	1	3	5	1	3	5
J4
2	4	6	2	4	6	2	4	6

* default setting

The IRQ and address range for both ports are fixed. However, if you wish to disable the port or change these parameters later, you can do this in the system BIOS setup. The table below shows the settings for the PCM-5820 Series board's ports.

Table 2-5: Serial port default settings

Port	Address	Interrupt	Default
COM1	3E8, 3F8	IRQ4	3F8
COM2	2E8, 2F8	IRQ3	2F8

24 PCM-5820 Series User's Manual