Datasheet

Travelstar 80GN Hard Disk Drive Specification

122

13.11 Initialize Device Parameters (91h)

Table 82: Initialize Device Parameters command (91h)

The Initialize Device Parameters command enables the host to set the number of sectors per track and the number

of heads minus 1, per cylinder. Words 54–58 in Identify Device Information reflects these parameters.

The parameters remain in effect until the following events occur:

• Another Initialize Device Parameters command is received.

• The device is powered off.

• A hard reset occurs.

• A soft reset occurs and the Set Feature option of CCh is set.

Output parameters to the device

Sector Count This indicates the number of sectors per track. Zero (0) indicates 0 sectors per track

instead of 256 sectors per track. It means that there are no sectors per track.

H This indicates the number of heads minus 1 per cylinder. The minimum is 0 and the maxi-

mum is 15.

Command Block Output Registers Command Block Input Registers

Data - - - - - - - - Data - - - - - - - -

Feature - - - - - - - - Error - - - - - - - -

Sector Count V V V V V V V V Sector Count - - - - - - - -

LBA Low - - - - - - - - LBA Low - - - - - - - -

LBA Mid - - - - - - - - LBA Mid - - - - - - - -

LBA High - - - - - - - - LBA High - - - - - - - -

Device 1 - 1 D H H H H Device - - - - - - - -

Command 1 0 0 1 0 0 0 1 Status see below

Error Register Status Register

7654321 0 76543 21 0

CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR

00000V0 0 000-- 0- V