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FUJITSU MHW2120BS User Manual

Page 218

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Interface

(38) READ DMA EXT (X’25’)

Description

This command is the extended command of the READ DMA command. The
LBA specification is increased from 28 bits to 48 bits, and the maximum
number of sectors that can be transferred by a single command is changed
from 100h to 10000h. Other command controls are the same as those of the
READ DMA command.

Error reporting conditions

(1) The command was issued in CHS mode (ST = 51h, ER = 04h).

The other error reporting conditions are the same as those of the READ DAM
command.

At command issuance (Shadow Block Registers setting contents)

CM

0 0 1 0 0 1 0 1

DH

1 L 1 x

xx

CH EXP

CH

CL EXP

CL

SN EXP

SN

SC EXP

SC

FR EXP

FR

LBA (47-40)
LBA (23-16)
LBA (39-32)
LBA (15-8)
LBA (31-24)
LBA (7-0)

Sector count (15-8)

Sector count (7-0)

xx
xx

At command completion (Shadow Block Registers contents to be read)

ST Status

information

1 L 1 x

xx

CH EXP

CH

CL EXP

CL

SN EXP

SN

SC EXP

SC

ER

LBA (47-40)
LBA (23-16)
LBA (39-32)
LBA (15-8)
LBA (31-24)
LBA (7-0)

xx
xx

Error information

DH

5-144

C141-E249

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