am79c972b Advanced Micro Devices, am79c972b Datasheet - Page 25

• Manufacturer Part Number: am79c972b
• Description: Pcnet?-fast+ Enhanced 10/100 Mbps Pci Ethernet Controller With Onnow Support
• Manufacturer: Advanced Micro Devices

Power Supply Pins
VDDB
I/O Buffer Power (7 Pins)
There are seven power supply pins that are used by the
input/output buffer drivers. All VDDB pins must be con-
nected to a +3.3 V supply.
VDD_PCI
PCI I/O Buffer Power (9 Pins)
There are nine power supply pins that are used by the
PCI input/output buffer drivers (except PME driver). All
VDD_PCI pins must be connected to a +3.3 V supply.
Power
Power
Am79C972
VSSB
I/O Buffer Ground (17 Pins)
There are 17 ground pins that are used by the input/
output buffer drivers.
VDD
Digital Power (6 Pins)
There are six power supply pins that are used by the in-
ternal digital circuitry. All VDD pins must be connected
to a +3.3 V supply.
VSS
Digital Ground (8 Pins)
There are eight ground pins that are used by the inter-
nal digital circuitry.
Power
Power
Power
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