smc256bf Numonyx, smc256bf Datasheet - Page 40

• Manufacturer Part Number: smc256bf
• Description: 32-mbyte, 64-mbyte, 128-mbyte, 256-mbyte, 512-mbyte, 1-gbyte, 2-gbyte And 4-gbyte 3.3/5 V Supply Compactflash? Card
• Manufacturer: Numonyx

Card configuration
Table 35.
40/90
Invalid mode
Standby mode
Task file write
Task file read
PIO data register write
DMA data register
write
PIO data register read
DMA data register
read
Control register write
Alternate status read
Drive address
Function code
True IDE mode I/O function
–
CS1
H
H
X
X
H
H
H
H
H
L
L
L
L
L
L
–
CS0
X
X
H
H
H
H
H
L
L
L
L
L
L
L
L
A2 to
1h-7h
1h-7h
A0
6h
6h
7h
X
X
X
X
X
X
X
X
0
0
-DMACK
H
H
H
H
H
H
H
H
X
L
L
L
L
L
L
–
IORD
H
H
H
H
X
X
X
X
L
L
L
L
L
L
L
–
IOWR
H
H
H
H
H
X
X
X
X
L
L
L
L
L
L
Undefined Out Undefined Out
Undefined Out Undefined Out
Odd-byte Out
Odd-byte Out
Undefined In
Undefined In
Odd-byte In
Odd-byte In
D15 to D8
Undefined
Don’t care
Don’t care
High Z
High Z
High Z
High Z
In/Out
Even-byte Out
Even-byte Out
Undefined In
Undefined In
Even-byte In
Even-byte In
Status Out
Undefined
Control In
D7 to D0
SMCxxxBF
Data Out
Data Out
Data In
High Z
In/Out