smc256af Numonyx, smc256af Datasheet - Page 54

• Manufacturer Part Number: smc256af
• Description: 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte And 512 Mbyte 3.3 V / 5 V Supply Compactflash? Card
• Manufacturer: Numonyx

CF-ATA command description
9.3
9.4
9.4.1
9.4.2
9.4.3
9.4.4
9.4.5
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Erase Sector(s) command (C0h)
This command is used to pre-erase and condition data sectors prior to a Write Sector
Without Erase command or a Write Multiple Without Erase command. There is no data
transfer associated with this command but a Write Fault error status can occur.
defines the byte sequence of the Erase Sector command.
Table 50.
Identify Drive command (ECh)
The Identify Drive command enables the host to receive parameter information from the
card. This command has the same protocol as the Read Sector(s) command.
defines the Identify Drive command byte sequence. All reserved bits or words are zero.
Table 52
Word 0: general configuration
This field indicates that the device is a CompactFlash memory card.
Word 1: default number of cylinders
This field contains the number of translated cylinders in the default translation mode. This
value will be the same as the number of cylinders.
Word 3: default number of heads
This field contains the number of translated heads in the default translation mode.
Word 6: default number of sectors per track
This field contains the number of sectors per track in the default translation mode.
Word 7-8: number of sectors per card
This field contains the number of sectors per card. This double word value is also the first
invalid address in LBA translation mode.
Command (7)
Sect Num (3)
Cyl High (5)
Sect Cnt (2)
Cyl Low (4)
Feature (1)
C/D/H (6)
Bit
shows the definition of each field in the identify drive information.
Erase Sector(s)
7
1
LBA
6
5
1
Cylinder High (LBA 23-16)
Sector Number (LBA 7-0)
Cylinder Low (LBA 15-8)
Drive
Sector Count
4
C0h
X
3
Head (LBA 27-24)
2
1
Table 51
Table 50
SMCxxxAF
0