參數(shù)資料
型號(hào): THNCFxxxxMA
廠商: Toshiba Corporation
英文描述: The THNCFxxxxMA series CompactFlash card is a flash technology based with ATA interface flash memory card
中文描述: 該THNCFxxxxMA系列CF卡是閃存技術(shù),ATA接口卡的閃存
文件頁數(shù): 13/47頁
文件大?。?/td> 501K
代理商: THNCFXXXXMA
THNCFxxxxMA Series
2002-10-20 13/47
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
IOS16
IOWR
D0~D15
CE
A0~A2
Dout
Din
Read cycle
Write cycle
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