Ata Bus Interface And Ata Commands; Introduction; Mechanical Interface; Signal Cable And Connector - Maxtor DiamondMax Plus9 60GB AT Product Manual

ATA BUS INTERFACE AND ATA COMMANDS

This chapter describes the interface between Maxtor DiamondMax Plus9
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.
5.1

INTRODUCTION

Maxtor DiamondMax Plus9 hard disk drives use the standard ATA/
ATAPI interface. Support of various options in the standard are
explained in the following sections.
5.2

MECHANICAL INTERFACE

5.2.1

Signal Cable and Connector

The Maxtor DiamondMax Plus9 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 DiamondMax Plus9 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.
5.3

ELECTRICAL INTERFACE

5.3.1

ATA Bus Interface

5.3.1.1 Electrical Characteristics
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 DiamondMax Plus9 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
Maxtor DiamondMax Plus9 60/80/120/160/200GB AT
Chapter 5
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