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5.3 Host Commands
C141-E221 5-113
(40) READ MULTIPLE EXT (X’29’): Option (customizing)
• Description
This command is the extended command of the READ MULTIPLE 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
MULTIPLE command.
At command issuance (I/O registers setting contents)
1F7
h
(CM) 0 0 1 0 1 0 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