FlashDrive Product Manual
FlashDrive Product Manual © 1999 SANDISK CORPORATION
32
5.2.2
Error Register
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
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 FlashDrive 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.
5.2.3
Feature Register
This register provides information regarding
features of the FlashDrive that the host can
utilize.
5.2.4
Sector Count Register
This register contains the number of sectors of data
requested to be transferred on a read or write
operation between the host and the FlashDrive.
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.
5.2.5
Sector Number (LBA 7-0) Register
This register contains the starting sector number or
bits 7-0 of the Logical Block Address (LBA) for
any FlashDrive data access for the subsequent
command.
5.2.6
Cylinder Low (LBA 15-8) Register
This register contains the low order 8 bits of the
starting cylinder address or bits 15-8 of the
Logical Block Address.
5.2.7
Cylinder High (LBA 23-16) Register
This register contains the high order bits of the
starting cylinder address or bits 23-16 of the
Logical Block Address.
Summary of Contents for SD25B-100
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