User`s guide

AR-B1631ET User’s Guide

14/30

2.2.22 CN4 (RS422 & RS485)

2.2.22 CF1 (NOTE 1)

NOTE 1:

For using both Hard Disk and Compact Flash, you have to use the ATA33 IDE cable.

IF you want to use the ATA66/100 mode with the Hard Disk, you must put the

jumper on JP6 and use the special IDE cable.

The cable is like below：

NOTE 2:

USB connectors (USB1 & USB2) and USB Pin headers cannot be used together. If

you want to use USB connectors, you must take the USB cable on Pin Header.

1 RS422TX+/RS485TRX+

2 RS422TX-/RS485TRX-

3 RS422RX+

4 RS422RX-

IDE HOST

IDE DEVICE

PDIAG

Usually the ATA66/100 cable

at Pin 34 at host side is

defined as CABLE ID and

connected to ground.

ith special cables, Pin 34 is

defined as PDIAG and

cannot be connected to

PIN34

Usually the ATA66/100 cable and Pin 34 are disconnected

between host and device side.

The special cable must be connected to this PDIAG signal from

host side to device side.