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CompactFlash Memory Card Product Manual Preliminary

5.5.2 Error Register (Address - 1F1[171];

Offset 1, 0Dh Read Only)

This register contains additional information about

the source of an error when an error is indicated in

bit 0 of the Status register. The bits are defined as

follows:

D7 D6 D5 D4 D3 D2 D1 D0

BBK UNC 0 IDNF 0 ABRT 0 AMNF

This register is also accessed on data bits D15-D8

during a write operation to offset 0 with -CE2 low

and -CE1 high.

Bit 7 (BBK) This bit is set when a Bad Block is detected.

Bit 6 (UNC) This bit is set when an Uncorrectable Error is encountered.

Bit 5 This bit is 0.

Bit 4 (IDNF) The requested sector ID is in error or cannot be found.

Bit 3 This bit is 0.

Bit 2 (Abort) This bit is set if the command has been aborted because of a CompactFlash Memory Card status condition:

(Not Ready, Write Fault, etc.) or when an invalid command has been issued.

Bit 1 This bit is 0.

Bit 0 (AMNF) This bit is set in case of a general error.

5.5.3 Feature Register (Address - 1F1[171]; Offset 1,

0Dh Write Only)

This register provides information regarding

features of the CompactFlash Memory Card that

the host can utilize. This register is also accessed

on data bits D15-D8 during a write operation to

Offset 0 with -CE2 low and -CE1 high.

5.5.4 Sector Count Register

(Address - 1F2[172]; Offset 2)

This register contains the number of sectors of data

requested to be transferred on a read or write

operation between the host and the CompactFlash

Memory 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

be transferred in order to complete the request.

5.5.5 Sector Number (LBA 7-0) Register (Address -

1F3[173]; Offset 3)

This register contains the starting sector number or

bits 7-0 of the Logical Block Address (LBA) for any

CompactFlash Memory Card data access for the

subsequent command.

5.5.6 Cylinder Low (LBA 15-8) Register (Address -

1F4[174]; Offset 4)

This register contains the low order 8 bits of the

starting cylinder address or bits 15-8 of the Logical

Block Address.

5.5.7 Cylinder High (LBA 23-16) Register (Address

- 1F5[175]; Offset 5)

This register contains the high order bits of the

starting cylinder address or bits 23-16 of the

Logical Block Address.