White Electronic Designs
PC Card Memory Mode
Pin
42
43
44
45
46
47
48
49
50
Signal
Name
WAIT#
INPACK#
REG#
BVD
2
BVD
1
D08
1
D09
1
D10
1
GND
Pin Type
O
O
I
I/O
I/O
I/O
I/O
I/O
In, Out
Type
OT1
OT1
I3U
I4U,OT1
I4U,OT1
I4Z,OZ1
I4Z,OZ1
I4Z,OZ1
Ground
Pin
42
43
44
45
46
47
48
49
50
PC Card I/O Mode
Signal
Name
WAIT#
INPACK#
REG#
SPKR#
STSCHG#
D08
1
D09
1
D10
1
GND
Pin Type
O
O
I
I/O
I/O
I/O
I/O
I/O
In, Out
Type
OT1
OT1
I3U
I4U,OT1
I4U,OT1
I4Z,OZ1
I4Z,OZ1
I4Z,OZ1
Ground
WED7PxxxCFA70xxI25
PIN ASSIGNMENTS AND PIN TYPE (cont'd)
True IDE Mode
Pin
42
43
44
45
46
47
48
49
50
Signal
Name
IORDY
DMARQ
DMACK#
DASP#
PDIAG#
D08
1
D09
1
D10
1
GND
Pin Type
O
O
I
I/O
I/O
I/O
I/O
I/O
In, Out
Type
ON1
OZ1
I3U
I4U,ON1
I4U,ON1
I4Z,OZ1
I4Z,OZ1
I4Z,OZ1
Ground
Notes: 1. These signals are required only for 16 bit access and not required when installed in 8 bit systems. Devices allow for 3-state signals to consume no current.
2. Should be grounded by the host.
3. Should be tied to V
CC
by the 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 (8bit)
Word access (16bit)
Odd byte access (8bit)
Note: X → L or H
REG#
X
L
L
L
L
CE2#
H
H
H
L
L
CE1#
H
L
L
L
H
A0
X
L
H
X
X
OE#
X
L
L
L
L
WE#
X
H
H
H
H
D8 to D15
High-Z
High-Z
High-Z
invalid
invalid
D0 to D7
High-Z
even byte
Invalid
even byte
High-Z
Attribute Write Access Mode
Mode
Standby mode
Byte access (8bit)
Word access (16bit)
Odd byte access (8bit)
Note: X → L or H
Write CIS-ROM region is invalid.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
July 2005
Rev. 1
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
REG#
X
L
L
L
L
CE2#
H
H
H
L
L
CE1#
H
L
L
L
H
A0
X
L
H
X
X
OE#
X
H
H
H
H
WE#
X
L
L
L
L
D8 to D15
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
D0 to D7
Don’t care
even byte
Don’t care
even byte
Don’t care
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
