THNCF008MBA Datasheet, PDF (24/48 Pages) Toshiba Semiconductor – The THNCFxxxMBA/BAI series CompactFlash card is a flash technology based with ATA interface flash memory card.

Preliminary
THNCFxxxMBA/BAI Series
6. Cylinder low register
This register contains the low 8-bit of the starting cylinder address, which is started by following sector
transfer command.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Cylinder low byte
7. Cylinder high register
This register contains the high 8-bit of the starting cylinder address, which is started by following sector
transfer command.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Cylinder high byte
8. Drive head register
This register is used for selecting the Drive number and Head number for the following command.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Obsolete
LBA
Obsolete
DRV
Head number
bit
Name
7
Obsolete
6
LBA
5
Obsolete
4
DRV (Drive select)
3
Head number
Function
This bit is normally set to “1”.
LBA is a flag to select either Cylinder/Head/Sector (CHS) or Logical Block Address
(LBA) mode. When LBA = 0, CHS mode is selected. When LBA=1, LBA mode is
selected. In LBA mode, the Logical Block Address is interrupted as follows:
LBA07~LBA00：Sector Number Register D7 to D0.
LBA15~LBA08：Cylinder Low Register D7 to D0.
LBA23~LBA16：Cylinder High Register D7 to D0.
LBA27~LBA24：Drive / Head Register bits HS3 to HS0.
This bit is normally set to “1”.
This bit is used for selecting the Master (Card 0) and Slave (Card 1) in
Master/Slave organization. The card is set to be Card 0 or 1 by using DRV# of the
Socket and Copy register.
This bit is used for selecting the Head number for the following command. Bit 3 is
MSB.
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