SMC032BF View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
SMC032BF Datasheet PDF : 91 Pages
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Card Configuration
SMCxxxBF
6.7
Common Memory Transfer Function
The Common Memory transfer to or from the Card permits both 8 or 16 bit access to all of
the Common Memory addresses. (see Table 34).
Table 34. Common Memory Function
Function Code –REG –CE2 –CE1 A0 –OE –WE D15 to D8 D7 to D0
Standby Mode
X
H
H
XX
X
High Z
High Z
Byte Read Access H
H
L
(8 bits)
H
H
L
LL
HL
H
High Z
Even Byte
H
High Z
Odd Byte
Byte Write Access H
H
L
LH
L
Don’t Care Even Byte
(8 bits)
H
H
L
HH
L
Don’t Care Odd Byte
Word Read Access
H
L
L
XL
(16 bits)
H
Odd Byte Even Byte
Word Write Access
H
L
L
XH
L
Odd Byte Even Byte
(16 bits)
Odd Byte Read Only
H
L
H
XL
(8 bits)
H
Odd Byte High Z
Odd Byte Write Only
H
L
H
XH
L
Odd Byte Don’t Care
(8 bits)
6.8
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 Table 35).
Removing and reinserting the Card while the host computer’s power is on will reconfigure
the Card to PC Card ATA mode.
Table 35. True IDE Mode I/O Function
Function Code
–CS1 –CS0
A2 to
A0
-DMACK
–IORD
–IOWR
D15 to D8
D7 to D0
Invalid Mode
Standby Mode
Task File Write
L
L
X
X
L
X
X
L
L
X
X
L
X
L
X
L
X
L
X
L
H
H
X
H
H
L 1h-7h
H
X
X
Undefined
In/Out
Undefined
In/Out
L
X Undefined Out Undefined Out
X
L
Undefined In Undefined In
L
X Undefined Out Undefined Out
X
L
Undefined In Undefined In
X
X
High Z
High Z
H
L
Don’t Care
Data In
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