Networking Silicon — 82551IT
4.6
Power and Ground Signals
Table 9. Power and Ground Signals
Symbol
Type
Name and Function
Digital 3.3 V Power. The VCC pins should be connected to the main
digital power supply. This is 3.3 VAUX in systems with an auxiliary
power supply and PCI power in systems without an auxiliary power
supply. The power source is configured through the FLA[1]/AUXPWR
pin.
VCC
DPS
VCCR
APS
DPS
Analog Power. These pins should be connected directly to VCC.
VSSPL,
VSSPP,
VSSPT, VSS
Digital Ground. These pins should be connected to the main digital
ground plane.
No Connect. These pins should not be connected to any circuit. Pull-
up or pull-down resistors should not be used.
NC
DPS
Datasheet
13
INTEL [ INTEL ]
