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SMSC LAN9311 Manual De Usuario

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Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
443
Revision 1.4 (08-19-08)
DATASHEET
 
15.3
  Power Consumption
This section details the power consumption of the LAN9311/LAN9311i. Power consumption values are
provided for both the device-only, and for the device plus the Ethernet components on ports 1 and 2.
Note 15.5
Over the conditions specified in 
Note:
Power dissipation is determined by operating frequency, temperature, and supply voltage, as
well as external source/sink current requirements.
Table 15.1  Supply and Current (10BASE-T Full-Duplex)
PARAMETER
TYPICAL
(@ 3.3V)
MAXIMUM
(@ 3.6V)
UNIT
Supply current at 3.3V 
(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)
165 185 
mA
Power Dissipation (Device Only)
550 
670 
mW
Power Dissipation (Device and Ethernet components)
1245 
1435 
mW
Ambient Operating Temperature in Still Air (T
A
)
25
o
C
Table 15.2  Supply and Current (100BASE-TX Full-Duplex)
PARAMETER
TYPICAL
(@ 3.3V)
MAXIMUM
(@ 3.6V)
UNIT
Supply current
(VDD33A1, VDD33A2, VDD33BIAS, VDD33IO)
255 295 
mA
Power Dissipation (Device Only)
845 
1070 
mW
Power Dissipation (Device and Ethernet components)
1130 
1385 
mW
Ambient Operating Temperature in Still Air (T
A
)
25
o
C