24 PCM-5820 Series User's ManualConfiguration of the audio interface is done completely viasoftware utilities.You don't have to set any jumpers. For furhterinformation, 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 oneRS-232/422/485. These ports allow you to connect to any serialdevice (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 thecard. The 9-pin D-SUB connector to the left of the card is theRS-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 inRS-232, RS-422, or RS-485 mode. This is done via J4.Table 2-4: COM2 selection (J4)*RS-232 RS-422 RS-485J4* default settingThe IRQ and address range for both ports are fixed. However, ifyou wish to disable the port or change these parameters later, youcan do this in the system BIOS setup. The table below shows thesettings for the PCM-5820 Series board's ports.Table 2-5: Serial port default settingsPort Address Interrupt DefaultCOM1 3E8, 3F8 IRQ4 3F8COM2 2E8, 2F8 IRQ3 2F82 4 62 4 61 3 52 4 61 3 5 1 3 5
