dp83848qsqx/nopb National Semiconductor Corporation, dp83848qsqx/nopb Datasheet - Page 30

• Manufacturer Part Number: dp83848qsqx/nopb
• Description: Phyter Extended Temperature Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver
• Manufacturer: National Semiconductor Corporation

11.5 ENERGY DETECT MODE
When Energy Detect is enabled and there is no activity on the
cable, the DP83848Q will remain in a low power mode while
monitoring the transmission line. Activity on the line will cause
the DP83848Q to go through a normal power up sequence.
Regardless of cable activity, the DP83848Q will occasionally
wake up the transmitter to put ED pulses on the line, but will
otherwise draw as little power as possible. Energy detect
functionality is controlled via register Energy Detect Control
(EDCR), address 0x1Dh.
30152513
FIGURE 12. Power Feedback Connection
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