5.3 Host Commands
C141-E171-03EN
5-103
(46) READ SECTOR (S) EXT (24H)
•
Description
This command is the extended command of the READ SECTOR (S)
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 SECTOR (S) command.
At command issuance (I/O registers setting contents)
1F7
h
(CM)
0
0
1
0
0
1
0
1
1F6
h
(DH)
1
L
1
DV
xx
1F5
h
(CH) P
1F5
h
(CH) C
1F4
h
(CL) P
1F4
h
(CL) C
1F3
h
(SN) P
1F3
h
(SN) C
1F2
h
(SC) P
1F2
h
(SC) C
1F1
h
(FR) P
1F1
h
(FR) C
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
C: Current
P: Previous
At command completion (I/O registers contents to be read)
1F7
h
(ST)
Status information
1F6
h
(DH)
1
L
1
DV
xx
1F5
h
(CH) 1
1F5
h
(CH) 0
1F4
h
(CL) 1
1F4
h
(CL) 0
1F3
h
(SN) 1
1F3
h
(SN) 0
1F2
h
(SC) 1
1F2
h
(SC) 0
1F1
h
(ER)
LBA (47-40)
LBA (23-16)
LBA (39-32)
LBA (15-8)
LBA (31-24)
LBA (7-0)
xx
xx
Error information
0: HOB=0
1: HOB=1
Summary of Contents for MHS2020AT
Page 1: ...C141 E171 03EN MHS2060AT MHS2040AT MHS2030AT MHS2020AT DISK DRIVES PRODUCT MANUAL ...
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Page 60: ...Theory of Device Operation 4 6 C141 E171 03EN Figure 4 3 Circuit Configuration ...
Page 190: ...Interface 5 114 C141 E171 03EN g d f f d e Figure 5 7 Normal DMA data transfer ...
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