spd6722qcce Intel Corporation, spd6722qcce Datasheet - Page 16

• Manufacturer Part Number: spd6722qcce
• Description: Isa-to-pc-card Pcmcia Controllers
• Manufacturer: Intel Corporation

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