TS256MBCF45I-D Transcend Information. Inc., TS256MBCF45I-D Datasheet - Page 49

• Manufacturer Part Number: TS256MBCF45I-D
• Description: Transcend Industrial Cf Card
• Manufacturer: Transcend Information. Inc.

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Transcend Information Inc.
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r
1
r
1
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1
a
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2
2
2
n
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8
8
8
s
This register provides information regarding features of the CompactFlash Storage Card that the host can
utilize. This register is also accessed in PC Card modes on data bits D15-D8 during a write operation to
Offset 0 with -CE2 low and -CE1 high.
This register contains the numbers of sectors of data requested to be transferred on a read or write
operation between the host and the CompactFlash Storage Card. If the value in this register is zero, a count
of 256 sectors is specified. If the command was successful, this register is zero at command completion. If
not successfully completed, the register contains the number of sectors that need to be transferred in order
to complete the request.
This register contains the starting sector number or bits 7-0 of the Logical Block Address (LBA) for any
CompactFlash Storage Card data access for the subsequent command.
This register contains the low order 8 bits of the starting cylinder address or bits 15-8 of the Logical Block
Address.
This register contains the high order bits of the starting cylinder address or bits 23-16 of the Logical Block
Address.
The Drive/Head register is used to select the drive and head. It is also used to select LBA addressing
instead of cylinder/head/sector addressing.
s
M
s
M
Feature Register (Address - 1F1h[171h]; Offset 1, 0Dh Write Only)
Sector Count Register (Address - 1F2h[172h]; Offset 2)
Sector Number (LBA 7-0) Register (Address - 1F3h[173h]; Offset 3)
6.1.5.5 Cylinder Low (LBA 15-8) Register (Address - 1F4h[174h]; Offset 4)
Cylinder High (LBA 23-16) Register (Address - 1F5h[175h]; Offset 5)
Drive/Head (LBA 27-24) Register (Address 1F6h[176h]; Offset 6)
M
Bit 7: this bit is specified as 1 for backward compatibility reasons. It is intended that this bit will become
Bit 6: LBA is a flag to select either Cylinder/Head/Sector (CHS) or Logical Block Address Mode (LBA).
Bit 5: this bit is specified as 1 for backward compatibility reasons. It is intended that this bit will become
Bit 4 (DRV): DRV is the drive number. When DRV=0, drive (card) 0 is selected. When DRV=1, drive (card)
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c
c
B
B
B
e
e
e
obsolete in a future revision of the specification. This bit is ignored by some controllers in some
commands.
When LBA=0, Cylinder/Head/Sector mode is selected. When LBA=1, Logical Block Address is
selected. In Logical Block Mode, the Logical Block Address is interpreted as follows:
obsolete in a future revisions of the specification. This bit is ignored by some controllers in some
commands.
1 is selected. Setting this bit to 1 is obsolete in PCMCIA modes of operation. If the obsolete
functionality is support by a CF Storage Card, the CompactFlash Storage Card is set to be Card 0 or 1
using the copy field (Drive #) of the PCMCIA Socket & Copy configuration register.
LBA7-LBA0: Sector Number Register D7-D0.
LBA15-LBA8: Cylinder Low Register D7-D0.
LBA23-LBA16: Cylinder High Register D7-D0.
LBA27-LBA24: Drive/Head Register bits HS3-HS0.
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8
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G
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B
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C
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