SMSC LAN9420i Manual De Usuario
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Revision 1.22 (09-25-08)
156
SMSC LAN9420/LAN9420i
DATASHEET
5.3
Power Consumption
This section details the power consumption of LAN9420/LAN9420i as measured during various modes
of operation. Power consumption values are provided for both the device-only, and for the device plus
Ethernet components.
of operation. Power consumption values are provided for both the device-only, and for the device plus
Ethernet components.
Note: Power dissipation is determined by operating frequency, temperature, and supply voltage, as
well as external source/sink requirements.
5.3.1
D0 - Normal Operation with Ethernet Traffic
Table 5.1 D0 - Normal Operation - Supply and Current (Typical)
PARAMETER
TYPICAL
(@ 3.3V)
UNIT
100BASE-TX Full Duplex
Supply current (VDD33IO, VDD33BIAS, VDD33A)
125
mA
Power Dissipation (Device Only)
415
mW
Power Dissipation (Device and Ethernet components)
560
mW
Ambient Operating Temperature in Still Air (T
A
)
25
o
C
10BASE-T Full Duplex
Supply current (VDD33IO, VDD33BIAS, VDD33A)
80
mA
Power Dissipation (Device Only)
265
mW
Power Dissipation (Device and Ethernet components)
615
mW
Ambient Operating Temperature in Still Air (T
A
)
25
o
C