smc256af Numonyx, smc256af Datasheet - Page 38

• Manufacturer Part Number: smc256af
• Description: 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte And 512 Mbyte 3.3 V / 5 V Supply Compactflash? Card
• Manufacturer: Numonyx

Card configuration
6.8
Table 34.
38/82
Invalid mode
Standby mode
Task File Write
Task File Read
Data Register Write
Data Register Read
Control Register Write
Alternate Status Read
Drive Address
Function code
True IDE mode I/O function
The card can be configured in a True IDE mode of operation. It is configured in this mode
only when the –OE signal is grounded by the host during the power-off to power-on cycle. In
this True IDE mode the PCMCIA protocol and configuration are disabled and only I/O
operations to the task file and data register are allowed. No memory or attribute registers
are accessible to the host. The Set Feature command can be used to put the device in 8 bit
mode (see
Removing and reinserting the card while the host computer’s power is on will reconfigure
the card to PC Card ATA mode.
True IDE mode I/O function
L
H
H
H
H
H
L
L
L
Table
–
CE2
34).
L
H
L
L
L
L
H
H
H
–
CE1
A2 to A0
X
X
1h-7h
1h-7h
L
L
6h
6h
7h
X
X
H
L
H
L
H
L
L
–
IORD
X
X
L
H
L
H
L
H
H
–
IOWR
High Z
High Z
Don’t care
High Z
Odd-byte In
Odd-byte Out
Don’t care
High Z
High Z
D15 to D8
High Z
High Z
Data In
Data Out
Even-byte In
Even-byte Out
Control In
Status Out
Data Out
D7 to D0
SMCxxxAF