Maxtor D540X-4G - Manual (Page 35)

Maxtor D540X-4G 5-1
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This chapter describes the interface between Maxtor D540X-4G hard disk drives and
the ATA bus. The commands that are issued from the host to control the drive are
listed, as well as the electrical and mechanical characteristics of the interface.
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Maxtor D540X-4G hard disk drives use the standard ATA/ATAPI interface.
Support of various options in the standard are explained in the following sections.
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The Maxtor D540X-4G hard disk drive contains a 40-pin unitized connector for
both signal and power connections as well as configuration jumpers. The
dimensions and specifications of the unitized connector comply with Annex. A in
the ATA/ATAPI standard.
The Maxtor D540X-4G drives require the use of an 80 conductor cable (ATA/
ATAPI-6, Annex. A, Figure A.4 and description) to support the drive’s Ultra DMA
capability.
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Signals on the ATA interface are assigned to connector pins according to Annex. A in
the ATA/ATAPI-6 standard for the 80 conductor cable assembly. The signaling
protocol complies with clause 9 and signal timing complies with clause 10 of the
standard.
The Maxtor D540X-4G hard disk drives support all Ultra DMA Data Transfer modes
(0 - 5) defined in the ATA/ATAPI-6 standard. In addition, these drives support Mode
6, and can send and receive data at the full 133MB/s transfer rate.
Hosts may assert the RESET- signal for longer than the minimum. When power is
applied with RESET- asserted, the Maxtor D540X-4G disk media will not begin to
spin up until RESET- is negated. This may reduce maximum current consumption
for the overall system.