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5-112 C141-E218
(39) READ NATIVE MAX ADDRESS EXT (X’27’): Option (customizing)
• Description
This command is used to assign the highest address that the device can initially
set with the SET MAX ADDRESS EXT command. The maximum address is
displayed in the CH, CL, SN registers of the device control register with HOB bit
= 0, 1.
• Error reporting conditions
This command is issued with LBA = 0. (ST = 51h, ER= 04h: Aborted command)
At command issuance (I/O registers setting contents)
1F7
h
(CM) 0 0 1 0 0 1 1 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
xx
xx
xx
xx
xx
xx
xx
xx
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)
Native max address LBA (47-40)
Native max address LBA (23-16)
Native max address LBA (39-32)
Native max address LBA (15-8)
Native max address LBA (31-24)
Native max address LBA (7-0)
xx
xx
Error information
0: HOB=0
1: HOB=1