Installation
3-6 Maxtor DiamondMax 17 80-160GB AT Hard Disk Drive
3.3.1.1 Cable Select (CS) Jumper
When a DiamondMax 17 80-160GB AT hard disk drive and another ATA hard disk
drive are daisy-chained together, they can be configured as Master or Slave either
by the CS or DS jumpers. To configure the drive as a Master or Slave with the CS
feature, the CS jumper is installed (1). The drive's position on the 80 conductor
Ultra ATA data cable then determines whether the drive is a Master (Device 0) or
a Slave (Device 1). If the drive is connected to the end of the Ultra (cable Select)
data cable the drive is a Master. If the drive is connected to the middle connection
it is set as a Slave.
Once you install the CS jumper, the drive is configured as a Master or Slave by the
state of the Cable Select signal: pin 28 of the ATA bus connector. Please note that
pin 28 is a vendor-specific pin that Maxtor is using for a specific purpose. More than
one function is allocated to CS, according to the ATA CAM specification (see
reference to this specification in Chapter 1). If pin 28 is a
0
(grounded), the drive is
configured as a Master. If it is a
1
(high), the drive is configured as a Slave. In order
to configure two drives in a Master/Slave relationship using the CS jumper, you
need to use a cable that provides the proper signal level at pin 28 of the ATA bus
connector. This allows two drives to operate in a Master/Slave relationship
according to the drive cable placement.
The DiamondMax 17 80-160GB AT hard disk drives are shipped from the factory
as a Master (Device 0 - CS jumper installed). To configure a drive as a Slave (Device
1- DS scheme), the CS jumper must be removed. In this configuration, the spare
jumper removed from the CS position may be stored on the PK jumper pins.
3.3.1.2 Drive Select (DS) Jumper
You can also daisy-chain two drives on the ATA bus interface by using their Drive
Select (DS) jumpers. To use the DS feature, the CS jumper must not be installed.
To configure a drive as the Master (Device 0), a jumper must be installed on the DS pins.
Note: The order in which drives are connected in a daisy chain has no significance.
3.3.1.3 Master Jumper Configuration
In combination with the current DS or CS jumper settings, the Slave Present (SP)
jumper can be implemented if necessary as follows:
Note: The CS position doubles as the Slave present on this drive.
When the drive is configured as a Master
(
DS jumper installed
or
CS jumper
installed, and the Cable Select signal is set to (
0
), adding an additional jumper
(both jumpers DS and CS now installed) will indicate to the drive that a Slave
drive is present. This Master with Slave Present jumper configuration should
be installed on the Master drive only if the Slave drive does
not
use the Drive
Active/Slave Present (DASP–) signal to indicate its presence.
