Hitachi HTS725050A9A364 Datasheet download pdf (Page 103)

7K500 OEM Specification

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14.12

14.1214.12

14.12 Initialize Device Parameters (91h)

Initialize Device Parameters (91h) Initialize Device Parameters (91h)

Initialize Device Parameters (91h)

Command Block Output Registers

Command Block Input Registers

Data -

Feature -

Error ...See Below...

Sector Count V

Sector Count -

LBA Low -

LBA Mid -

LBA High -

Device -

Command 1

Status ...See Below...

Error Register

Status Register

7 6 5 4 3 2 1 0

CRC

UNC

0 IDN

0 ABT

T0N

BSY

RDY

DSC

DRQ

COR

IDX

ERR

0 0 0 0 0 V 0 0

0 0 0 - - 0 0 V

Table 67 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:



Another Initialize Device Parameters command is received.



The device is powered off.



Soft reset occurs and the Set Feature option of CCh is set

Output Parameters To The Device

Sector Count

The number of sectors per track. 0 does not mean there are 256 sectors per track, but there is no

sector per track.

The number of heads minus 1 per cylinder. The minimum is 0 and the maximum is 15.

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 175 176

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Hitachi HTS725050A9A364 Datasheet Page 103

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