THNCF008MAA Datasheet, PDF (31/52 Pages) Toshiba Semiconductor – CompactFlash Card

Preliminary version
THNCFxxxMAA Series
Note: FR: Feature register
SC: Sector Count register
SN: Sector Number register
CY: Cylinder register
DR: DRV bit of Drive Head register
HD: Head Number of Drive Head register
LBA: Logical Block Address Mode Supported
Y: The register contains a valid parameter for this command
N: The register does not contain a valid parameter for this command
12. Device control register: This register is write only register, and it is used for controlling the card interrupt
request and issuing an ATA soft reset to the card.
bit7
bit6
bit5
x
x
x
bit4
bit3
x
1
bit2
bit1
bit0
SRST
nIEN
0
bit Name
7to 4 X
31
2
SRST(Software ReSeT)
1
nIEN(Interrupt Enable)
00
Function
don’t care
This bit is set to “1”.
This bit is set to “1” in order to force the card to perform Task File
Reset operation. This does not change the Card Configuration
registers as a Hardware Reset does. The card remains in Reset until
this bit is reset to “0”.
This bit is used for enabling –IREQ. When this bit is set to “0”,
-IREQ is enabled. When this bit is set to “1”, -IREQ is disabled.
This bit is set to “0”.
13.Drive Address register: This register is read only register, and it is used for confirming the drive status. This
register is provides for compatibility with the AT disk drive interface. It is recommended that this register is not
mapped into the host’s I/O space because of potential conflicts on bit7.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
x
nWTG
nHS3
nHS2
nHS1
nHS0
nDS1
nDS0
bit Name
7X
6
nWTG(WriTing Gate)
5 to 2 nHS3-0(Head Select3-0)
1
nDS1(Idrive Select1)
0
nDS0(Idrive Select0)
Function
This bit is unknown.
This bit is unknown.
These bits is the negative value of Head Select bits(bit 3 to 0)in
Drive/Head register.
This bit is unknown.
This bit is unknown.
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