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THNCFXXXBAI Datasheet(PDF) 13 Page - Toshiba Semiconductor

Part No. THNCFXXXBAI
Description  The THNCFxxxMBA/BAI series CompactFlash card is a flash technology based with ATA interface flash memory card.
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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THNCFXXXBAI Datasheet(HTML) 13 Page - Toshiba Semiconductor

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THNCFxxxMBA/BAI Series
2002-10-20
13/48
Preliminary
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
−CE2
−CE1
A0~A2
−IORD
−IOWR
D8 to D15
D0 to D7
Invalid mode
L
L
X
X
X
High-Z
High-Z
Standby mode
H
H
X
X
X
High-Z
High-Z
Data register access
H
L
0
L
H
odd byte
even byte
Alternate status access
L
H
6H
L
H
High-Z
Status out
Other task file access
H
L
1~7H
L
H
High-Z
Data
Note:
X
→ L or H
• True IDE Mode Write I/O Function
Mode
−CE2
−CE1
A0~A2
−IORD
−IOWR
D8 to D15
D0 to D7
Invalid mode
L
L
X
X
X
Don’t care
Don’t care
Standby mode
H
H
X
X
X
Don’t care
even byte
Data register access
H
L
0
H
L
odd byte
Don’t care
Control register access
L
H
6H
H
L
Don’t care
Control in
Other task file access
H
L
1~7H
H
L
odd byte
Data
Note:
X
→ L or H
• True IDE Mode I/O Access Timing Example
−IORD
−IOIS16
−IOWR
D0~D15
−CE
A0~A2
Dout
Din
Read cycle
Write cycle


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