HGST Travelstar 7K500 BE, 320GB 0A79103 User Manual

Product codes

0A79103

7K500 OEM Specification

Page 141 of 176

14.38

14.38 Set Multiple (C6h)

Set Multiple (C6h)

Command Block Output Registers

Command Block Input Registers

7 6 5 4 3 2 1 0 Register

7 6 5 4 3 2 1 0

Data

- - - - - - - - Data

- - - - - - - -

Feature

- - - - - - - - Error

...See Below...

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

- - - - - - - - Device

- - - - - - - -

Command

1 1 0 0 0 1 1 0 Status

...See Below...

Error Register

Status Register

CRC UNC

IDN

ABT T0N AM

BSY RDY

DSC DRQ COR IDX ERR

Table 108 Set Multiple Command (C6h)

The Set  Multiple command enables  the device to perform Read and Write Multiple commands and
establishes  the  block  size  for  these  commands.  The  block  size  is  the  number  of  sectors  to  be
transferred for each interrupt.

The default block size after power up is 0, and Read Multiple and Write Multiple commands are
disabled.

If an invalid block size is specified, an Abort error will be returned to the host, and Read Multiple
and Write Multiple commands will be disabled.

Output Parameters To The Device
Sector Count

The block size to be used for Read Multiple and Write Multiple commands. Valid
block sizes can be selected from 0, 1, 2, 4, 8 or 16. If 0 is specified, then Read Multiple
and Write Multiple commands are disabled.