SanDisk SSD P4 User Manual Page 24

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SSD SATA 5000 2.5" Datasheet
Preliminary, Rev 0.2
© 2007 SanDisk® Corporation 24 May 2007, Document No. 80-11-01431
8.3 Write Commands
Write Buffer
Register
7
6
5
4
3
2
1
0
Features
N/A
Sector Count
N/A
Sector Number
N/A
Cylinder Low
N/A
Cylinder High
N/A
Device/Head
obs
N/A
obs
DEV
N/A
Command
E8h
Enable the host to write the contents of one sector in the device’s buffer.
The READ BUFFER and WRITE BUFFER commands are synchronized such
that sequential WRITE BUFFER and READ BUFFER commands access the
same 512 bytes within the buffer.
Write DMA
Register
7
6
5
4
3
2
1
0
Features
N/A
Sector Count
Sector Count
Sector Number
Sector Number or LBA (7:0)
Cylinder Low
Cylinder Low or LBA (15:8)
Cylinder High
Cylinder High or LBA (23:16)
Device/Head
obs
LBA
obs
DEV
Head number or LBA (27:24)
Command
CAh or CBh
Write DMA Ext
Register
7
6
5
4
3
2
1
0
Features
Current
Previous
Reserved
Reserved
Sector Count
Current
Previous
Sector Count (7:0)
Sector Count (15:8)
Sector Number
Current
Previous
Sector Number or LBA (7:0)
Sector Number or LBA (31:24)
Cylinder Low
Current
Previous
Cylinder Low or LBA (15:8)
Cylinder Low or LBA (39:32)
Cylinder High
Current
Previous
Cylinder High or LBA (23:16)
Cylinder High or LBA (47:40)
Device/Head
Obs
LBA
obs
DEV
Reserved
Command
35h
NOTE: Current is the value most recently written to the register. Previous is the value that was
in the register before the most recent write to the register.
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