Maxtor MaxLine Plus II 250GB AT Product Manual page 22

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 MaXLine Plus II 250GB 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
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.
significance.
Maxtor MaXLine Plus II 250GB AT
Installation
3-7