Acrosser AR-B1631ET - Manual (Page 14)

AR-B1631ET User’s Guide
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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-
1
4
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.
With 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.