ATA Bus Interface and ATA Commands

Hosts may assert the RESET- signal for longer than the minimum. When power is applied with RESET- asserted, the Quickview 300 disk media will not begin to spin up until RESET- is negated. This may reduce maximum current consumption for the overall system.

5.4REGISTER ADDRESS DECODING

The Quickview 300 hard disk drives allow their host systems to address the full set of command and control registers as specified in clause 7 of the ATA/ATAPI-6 standard.

5.5COMMAND INTERFACE

5.5.1General Feature Set

The µProcessor, Disk Controller, and PATA Interface electronics are contained in a proprietary ASIC developed by Maxtor.

5.5.2Supported Commands

The Quickview 300 hard disk drives support all the mandatory commands from the general feature set for devices not supporting the Packet command feature set. Refer to the ATA/ATAPI-6 standard for a detailed description of these commands. The IDENTIFY DRIVE command, however, is elaborated in the section "Identify Drive Command" on page 6.

Note: 1. As defined in the ATA/ATAPI-6 standard.

Table 5-1lists the supported commands.

Table 5-1Supported Commands

 

Command

Feature

Command

Register

Code

 

Value(s)

 

 

 

 

 

 

 

 

CHECK POWER MODE

E5h

 

 

 

 

DEVICE CONFIGURATION FREEZE LOCK

B1h

C1h

 

 

 

DEVICE CONFIGURATION IDENTIFY

B1h

C2h

 

 

 

DEVICE CONFIGURATION RESTORE

B1h

C0h

 

 

 

DEVICE CONFIGURATION SET

B1h

C3h

 

 

 

DOWNLOAD MICROCODE

92h

07h, 01h

 

 

 

EXECUTE DRIVE DIAGNOSTIC

90h

 

 

 

 

5-2 Quickview 300 80/100/120/160/200/250/300GB PATA