DM9008AEP_06 DAVICOM [Davicom Semiconductor, Inc.], DM9008AEP_06 Datasheet - Page 40
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DM9008AEP_06
Manufacturer Part Number
DM9008AEP_06
Description
Ethernet Controller with General Processor Interface
Manufacturer
DAVICOM [Davicom Semiconductor, Inc.]
Datasheet
1.DM9008AEP_06.pdf
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9.9 Power Reduced Mode
The Signal detect circuit is always turned to monitor whether
there is any signal on the media (cable disconnected). The
DM9008A automatically turns off the power and enters the
Power Reduced mode, whether its operation mode is
N-way or force mode. When enters the Power Reduced
mode, the transmit circuit still sends out fast link pules with
minimum power consumption. If a valid signal is detected
from the media the device will wake up and resume a
normal operation mode.
That can be writing Zero to PHY Reg. 16.4 to disable Power
Reduced mode.
Preliminary
Version: DM9008AEP-DS-P03
Dec. 14, 2006
Ethernet Controller with General Processor Interface
9.9.1 Power Down Mode
The PHY Reg.0.11 can be set high to enter the Power
Down mode, which disables all transmit, receive functions,
except the MII management interface.
9.9.2 Reduced Transmit Power Mode
The additional Transmit power reduction can be
gained by designing with 1.25:1 turns ration magnetic
on its TX side and using a 8.5KΩ resistor on BGRES
and AGND pins, and the TXO+/TXO- pulled high
resistors should be changed from 50 Ω to 78 Ω .
This configuration could be reduced about 20%
transmit power.
DM9008AEP
40
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