DM9010BI DAVICOM [Davicom Semiconductor, Inc.], DM9010BI Datasheet - Page 45
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DM9010BI
Manufacturer Part Number
DM9010BI
Description
Industrial-temperature 10/100 Mbps Single Chip Ethernet Controller With General Processor Interface
Manufacturer
DAVICOM [Davicom Semiconductor, Inc.]
Datasheet
1.DM9010BI.pdf
(60 pages)
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9.11 Power Reduced Mode
The Signal detect circuit is always turned to monitor whether
there is any signal on the media (cable disconnected). The
DM9010BI 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, which might be N-ways fast link pules,
10Base-T normal link pules, or 100Base-TX MLT3 signals,
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: DM9010BI--DS-P01
January 12, 2010
Industrial-temperature Single Chip Ethernet Controller with General Processor Interface
9.11.1 Power Down Mode
The PHY Reg.0.11 can be set high to enter the Power
Down mode, which disables all transmit, receive functions
and MII interface functions, except the MDC/MDIO
management interface.
9.11.2 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 50Ω to 78Ω. This
configuration could be reduced about 20% transmit
power.
DM9010BI
45
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