GD82541PI Datasheet, PDF (18/46 Pages) Intel Corporation – 82541 Family of Gigabit Ethernet Controllers

82541(PI/GI/EI) — Networking Silicon
3.7.2
3.7.3
Grounds, Reserved Pins and No Connects
Symbol Type
Name and Function
VSS
P
AVSS
P
RSVD_VSS P
RSVD_NC P
NC
P
Ground.
Shared analog Ground.
Reserved Ground. This pin is reserved by Intel and may have factory test functions.
For normal operation, connect to ground.
Reserved No connect. This pin is reserved by Intel and may have factory test
functions. For normal operation, do not connect any circuit to these pins. Do not
connect pull-up or pull-down resistors.
No Connect. This pin is not connected internally.
Voltage Regulation Control Signals (2)
Symbol
CTRL12
CTRL18
Type
Name and Function
1.2 V Control. LDO voltage regulator output to drive external PNP pass transistor. If
A
1.2 V is already present in the system, leave output unconnected. To achieve optimal
D3 power consumption, leave the output unconnected and use a high-efficiency
external regulator.
1.8 V Control. LDO voltage regulator output to drive external PNP pass transistor. If
A
1.8 V is already present in the system, leave output unconnected. To achieve optimal
D3 power consumption, leave the output unconnected and use a high-efficiency
external regulator.
18