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HB288256C6 Datasheet, PDF (12/67 Pages) Hitachi Semiconductor – CompactFlash™ | |||
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HB288256/192/160/128/096/064/032C6
Host access specifications
1. Attribute access specifications
When CIS-ROM region or Configuration register region is accessed, read and write operations are executed
under the condition of -REG = "L" as follows. That region can be accessed by Byte/Word/Odd-byte modes
which are defined by PC card standard specifications.
Attribute Read Access Mode
Mode
Standby mode
Byte access (8-bit)
Word access (16-bit)
Odd byte access (8-bit)
Note: Ã: L or H
-REG -CE2 -CE1 A0
Ã
H
H
Ã
L
H
L
L
L
H
L
H
L
L
L
Ã
L
L
H
Ã
-OE -WE D8 to D15 D0 to D7
Ã
Ã
High-Z
High-Z
L
H
High-Z
even byte
L
H
High-Z
invalid
L
H
invalid
even byte
L
H
invalid
High-Z
Attribute Write Access Mode
Mode
Standby mode
Byte access (8-bit)
Word access (16-bit)
Odd byte access (8-bit)
Note: Ã: L or H
-REG -CE2 -CE1 A0
Ã
H
H
Ã
L
H
L
L
L
H
L
H
L
L
L
Ã
L
L
H
Ã
-OE -WE D8 to D15 D0 to D7
Ã
Ã
Donât care Donât care
H
L
Donât care even byte
H
L
Donât care Donât care
H
L
Donât care even byte
H
L
Donât care Donât care
Attribute Access Timing Example
A0 to A10
-REG
-CE2/-CE1
-OE
-WE
D0 to D15
Dout
read cycle
Din
write cycle
12
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