PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Power Type
Output or Pull-up Power Source
B_SOCKET_VCC: powered from the Socket
3
B V supply connecting to PC Card pins 17
CC
and 51 of Socket B
ISA_VCC: powered from the ISA bus power
supply
4
5
CORE_VDD: usually powered from the
lowest available power supply for lowest
power consumption, which in most systems
is 3.3 volts
Note: All pin inputs are referenced to CORE_VDD, independent of their output supply voltage.
The drive-type (Drive) column describes the output drive-type of the pin (see DC specifications in
“Electrical Specifications” on page 101 for more information). Note that the drive type listed for an
input-only (I) pin is not applicable (–).
3.3
Pin Descriptions
Table 1. ISA Bus Interface Pins (Sheet 1 of 4)
Pin Number
Pin Name
Description
Qty.
I/O
Pwr. Drive
PD6710
PD6722
ISA Bus Address Input: Connect to ISA
signals 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 signals SA[19:17].
157, 155, 153,
151, 149, 147,
146
96, 94, 92, 89,
87, 85, 84
LA[23:17]
7
I
4
4
–
–
123:120, 118, 184:181, 179,
117, 115, 114, 178, 176, 175,
173, 171,
108:106, 104, 169:167, 165,
103, 101, 100 164, 162, 161
ISA Bus Address Input: Connect to ISA
signals SA[16:0].
SA[16:0]
SD[15:0]
112, 110,
17
16
I
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].
71, 73–75, 77, 134–137, 139,
79–81, 140,
141–143, 200,
139, 137, 136, 199, 197, 196,
134, 132, 130, 194, 193, 190,
I/O
4
4
12 mA
For 8-bit system buses, leave SD[15:8]
unconnected.
129
189
Byte High Enable: This input is used in
conjunction with SA[0] to specify the width
and alignment of a data transfer. Connect to
ISA signal SBHE*.
SBHE*
98
159
1
I
–
For 8-bit system buses, pull up connect to
ISA_VCC supply.
I/O Read: This input indicates that a host
I/O read cycle is occurring. Connect to ISA
signal IOR*.
IOR*
IOW*
124
125
185
186
1
1
I
I
4
4
–
–
I/O Write: This input indicates that a host I/O
write cycle is occurring. Connect to ISA
signal IOW*.
16
Datasheet
INTEL [ INTEL ]
