THNCF064MMA Datasheet, PDF (13/47 Pages) Toshiba Semiconductor – The THNCFxxxxMA series CompactFlash card is a flash technology based with ATA interface flash memory card

Preliminary
THNCFxxxxMA Series
3. True IDE Mode
The card can be configured in a True IDE This card is configured in this mode only when the-OE input signal
is asserted GND by the host. In this True IDE mode Attribute Registers are not accessible from the host.
Only I/O operation to the task file and data register is allowed. If this card is configured during power on
sequence, data register is accessed in word (16-bit). The card permits 8-bit accessed if the user issues a Set
Feature Command to put the device in 8-bit mode.
• True IDE Mode Read I/O Function
Mode
Invalid mode
Standby mode
Data register access
Alternate status access
Other task file access
Note: X Ë  L or H
−CE2
L
H
H
L
H
−CE1
L
H
L
H
L
A0~A2
X
X
0
6H
1~7H
−IORD
Xç
Xç
Lç
Lç
L
−IOWR
Xç
Xç
Hç
Hç
H
D8 to D15
High-Z
High-Zç
odd byte
High-Zç
High-Z
D0 to D7
High-Zç
High-Z
even byteç
Status outç
Data
• True IDE Mode Write I/O Function
Mode
Invalid mode
Standby mode
Data register access
Control register access
Other task file access
Note: X Ë  L or H
−CE2
L
H
H
L
H
−CE1
L
H
L
H
L
A0~A2
X
X
0
6H
1~7H
−IORD
X
X
H
H
H
−IOWR
X
X
L
L
L
D8 to D15 D0 to D7
Don’t care Don’t careç
Don’t careç even byte
odd byte Don’t careç
Don’t care Control inç
odd byteç
Dataç
• True IDE Mode I/O Access Timing Example
A0~A2
−CE
−IORD
−IOWR
−IOS16
D0~D15
Dout
Read cycle
Din
Write cycle
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