SMCXXXAF Datasheet, PDF (73/82 Pages) Numonyx B.V – 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash™ card

SMCxxxAF
CF-ATA command description
9.27
Write Sector(s) without Erase command (38h)
This command is similar to the Write Sector(s) command with the exception that an implied
erase before write operation is not performed. This command has the same protocol as the
Write Sector(s) command. The sectors should be pre-erased with the Erase Sector(s)
command before this command is issued. If the sector is not pre-erased a normal write
sector operation will occur. Table 79 defines the Write Sector(s) without Erase command
byte sequence.
M
Table 79. Write Sector(s) without Erase
Bit
7
65 4
3
2
1
0
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sect Num (3)
Sect Cnt (2)
Feature (1)
38h
1
LB
A
1
Drive
Head (LBA 27-24)
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Sector Number (LBA 7-0)
Sector Count
X
9.28
Write Verify command (3Ch)
This command is similar to the Write Sector(s) command, except each sector is verified
immediately after being written. This command has the same protocol as the Write Sector(s)
command. Table 80 defines the Write Verify command byte sequence.
Table 80. Write Verify
Bit
7
6
Command (7)
C/D/H (6)
1
LBA
Cyl High (5)
Cyl Low (4)
Sect Num (3)
Sect Cnt (2)
Feature (1)
5
4
3
2
1
0
3Ch
1
Drive
Head (LBA 27-24)
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Sector Number (LBA 7-0)
Sector Count
X
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