
PRELIMINARY DATA SHEET v3.1
CL-PD6710/’22
ISA–to–PC-Card Host Adapters
May 1997
12
PIN INFORMATION
2.3
Pin Descriptions
Table 2-1.
ISA Bus Interface Pins
Pin Name
Description
Pin Number
Qty.
I/O
Pwr. Drive
CL-PD6710
CL-PD6722
LA[23:17]
ISA Bus Address Input
: Connect to ISA sig-
nals LA[23:17] or, for systems limited to
1-Mbyte address space, tie ALE high, ground
LA[23:20] and connect LA[19:17] to ISA sig-
nals SA[19:17].
96, 94, 92, 89,
87, 85, 84
157, 155, 153,
151, 149, 147,
146
7
I
4
–
SA[16:0]
ISA Bus Address Input
: Connect to ISA sig-
nals SA[16:0].
123:120, 118,
117, 115, 114,
112, 110,
108:106, 104,
103, 101, 100
184:181, 179,
178, 176, 175,
173, 171,
169:167, 165,
164, 162, 161
17
I
4
–
SD[15:0]
ISA Bus Data Input/Output
: These pins are
used to transfer data during a memory or I/O
cycle. Connect to ISA signals SD[15:0].
For 8-bit system buses, leave SD[15:8] uncon-
nected.
71, 73–75, 77,
79–81, 140,
139, 137, 136,
134, 132, 130,
129
134–137,
139,
141–143,
200, 199, 197,
196, 194, 193,
190, 189
16
I/O
4
12
mA
SBHE*
Byte High Enable
: This input is used in con-
junction with SA[0] to specify the width and
alignment of a data transfer. Connect to ISA
signal SBHE*.
For 8-bit system buses, pull up connect to
ISA_VCC supply.
98
159
1
I
4
–
IOR*
I/O Read
: This input indicates that a host
I/O read cycle is occurring. Connect to ISA sig-
nal IOR*.
124
185
1
I
4
–
IOW*
I/O Write
: This input indicates that a host I/O
write cycle is occurring. Connect to ISA signal
IOW*.
125
186
1
I
4
–
MEMR*
Memory Read
: This input indicates that a host
memory read cycle is occurring. Connect to
ISA signal MEMR*.
83
145
1
I
4
–
MEMW*
Memory Write
: This input indicates that a host
memory write cycle is occurring. Connect to
ISA signal MEMW*.
82
144
1
I
4
–
REFRESH*
Refresh
: This input indicates a memory
refresh cycle is occurring and will cause the
CL-PD67XX to ignore memory accesses on
the bus. Connect to ISA signal REFRESH*.
119
180
1
I
4
–
ALE
Address Latch Enable
: A high on this input
indicates a valid memory address on the
LA[23:17] bus lines. Connect to ISA signal
BALE.
105
166
1
I
4
–