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THNCF008MBA Datasheet, PDF (11/48 Pages) Toshiba Semiconductor – The THNCFxxxMBA/BAI series CompactFlash card is a flash technology based with ATA interface flash memory card. | |||
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Preliminary
THNCFxxxMBA/BAI Series
2. Task File register access specifications
There are two cases of Task File register mapping, one is mapped I/O address area, the other is mapped
Memory address area. Each case of Task File registers read and write operations is executed under the
condition as follows. That area can be accessed by Byte/World/Odd Byte modes, which are defined by PC card
standard specifications.
(1) I/O address map
⢠Task File Register Read Access Mode (1)
Mode
âREG âCE2 âCE1
Standby mode
X
H
H
Byte access (8bit)
L
H
L
L
H
L
Word access (16bit)
L
L
L
Odd byte access (8bit)
L
L
H
Note: X Ë L or H
A0 âIORD âIOWR âOE âWE D8 to D15 D0 to D7
X
Xç
Xç
Xç
Xç High-Z High-Zç
L
Lç
Hç
Hç
Hç High-Zç even byte
H
Lç
Hç
Hç
Hç High-Z odd byteç
X
Lç
Hç
Hç
Hç odd byte even byteç
X
Lç
Hç
Hç
Hç odd byteç High-Zç
⢠Task File Register Write Access Mode (1)
Mode
âREG âCE2 âCE1
Standby mode
X
H
H
Byte access (8bit)
L
H
L
L
H
L
Word access (16bit)
L
L
L
Odd byte access (8bit)
L
L
H
Note: X Ë L or H
A0 âIORD âIOWR âOE âWE D8 to D15 D0 to D7
X
X
X
Xç
Xç Donât care Donât careç
L
H
L
Hç
Hç Donât careç even byte
H
H
L
Hç
Hç Donât care odd byteç
X
H
L
Hç
Hç odd byte even byteç
X
H
L
Hç
Hç odd byteç Donât careç
⢠Task File Register Access Timing Example (1)
A0~A10
âREG
âCE2/âCE1
âIORD
âIOWR
D0~D15
Dout
Din
Read cycle
Write cycle
2002-10-20 11/48
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