CompactFlash Memory Card Product Manual
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION
75
6.1.23
Wear Level - F5H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
F5H
C / D / H ( 6 )
X
X
X
Drive
Flag
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
Completion Status
Feature (1)
X
This command is effectively a NOP command and
only implemented for backward compatability
with earlier SanDisk SDP series products. The
Sector Count Register will always be returned
with an 00H indicating Wear Level is not needed.
6.1.24
Write Buffer - E8H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
E8H
C / D / H ( 6 )
X
Drive
X
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
X
Feature (1)
X
The Write Buffer command enables the host to
overwrite contents of the CompactFlash Memory
Card’s sector buffer with any data pattern
desired. This command has the same protocol as
the Write Sector(s) command and transfers 512
bytes.
