ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Table 5. Power and Ground Pins
Pin Number
Pin Name
Description
Qty.
I/O
Pwr. Drive
PD6710
PD6722
This pin is connected to the system’s 5-volt
power supply. In systems where 5 volts is not
available, this pin can be connected to the
system’s 3.3-volt supply (but 5-volt-only PC
Cards will not be supported).
+5V
1
208
1
PWR
–
–
This pin provides power to the core circuitry of
the PD67XX. It can be connected to either a
3.3- or 5-volt power supply, independent of the
operating voltage of other interfaces. For power
CORE_VDD conservation on a system with a 3.3-volt supply
available, this pin should be connected to the
3.3-volt supply even if there is no intention of
operating other interfaces on the device at less
than 5 volts.
16, 91
27, 133
2
6
PWR
GND
–
–
–
–
All ground pins should be connected to system 20, 54, 72, 78,
31, 70, 79,
111, 140, 192
GND
ground.
128, 133
Table 6 below summarizes the pin usage.
Table 6. Pin Usage Summary
Pin Quantity
Pin Group
PD6710
PD6722
ISA bus interface pins
69
60
0
69
120
2
Socket interface pins
General-purpose strobe pins
Voltage sense pins
N/C
1
0
1
0
Power control pins
Power and ground pins
4
8
9
9
Total:
144
208
3.4
Power-On Configuration Summary
On the rising edge of PWRGOOD, the PD67XX latches the configuration pin SPKR_OUT*/
C_SEL to determine which sockets are addressed by this device. A ‘1’ on the SPKR_OUT*/
C_SEL pin will cause the device to address Socket 0 (and Socket 1 for the PD6722). A ‘0’ on this
pin will cause the device to address Socket 2 (and Socket 3 for the PD6722).
Datasheet
25
INTEL [ INTEL ]
