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DM9003 데이터시트(PDF) 43 Page - Davicom Semiconductor, Inc.

부품명 DM9003
상세설명  10/100 Mbps 2-port Ethernet Switch Controller with General Processor Interface
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제조업체  DAVICOM [Davicom Semiconductor, Inc.]
홈페이지  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9003 데이터시트(HTML) 43 Page - Davicom Semiconductor, Inc.

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DM9003
2-port Switch with Processor Interface
Preliminary datasheet
43
DM9003-15-DS-P05
April 9, 2009
8.8 DAVICOM Specified Configuration Register (DSCR) – 10H
Bit
Bit Name
Default
Description
15
BP_4B5B
0,RW
Bypass 4B5B Encoding and 5B4B Decoding
1 = 4B5B encoder and 5B4B decoder function bypassed
0 = Normal 4B5B and 5B4B operation
14
BP_SCR
0, RW
Bypass Scrambler/Descrambler Function
1 = Scrambler and descrambler function bypassed
0 = Normal scrambler and descrambler operation
13
BP_ALIGN
0, RW
Bypass Symbol Alignment Function
1 = Receive functions (descrambler, symbol alignment and symbol
decoding functions) bypassed. Transmit functions (symbol
encoder and scrambler) bypassed
0 = Normal operation
12
BP_ADPOK
0, RW
BYPASS ADPOK
Force signal detector (SD) active. This register is for debug only,
not release to customer
1: Forced SD is OK,
0: Normal operation
11
Reserved
RW
Reserved
Force to 0 in application
10
TX
1, RW
100BASE-TX Mode Control
1 = 100BASE-TX operation
0 = 100BASE-FX operation
9
Reserved
0, RO
Reserved
8
Reserved
0, RW
Reserved
7
F_LINK_100
0, RW
Force Good Link in 100Mbps
1 = Force 100Mbps good link status
0 = Normal 100Mbps operation
This bit is useful for diagnostic purposes
6
Reserved
0, RW
Reserved
Force to 0 in application.
5
COL_LED
0, RW
COL LED Control (valid in PHY test mode)
4
RPDCTR-EN
1, RW
Reduced Power Down Control Enable
This bit is used to enable automatic reduced power down
1 = Enable automatic reduced power down
0 = Disable automatic reduced power down
3
SMRST
0, RW
Reset State Machine
When writes 1 to this bit, all state machines of PHY will be reset.
This bit is self-clear after reset is completed
2
MFPSC
1, RW
MF Preamble Suppression Control
MII frame preamble suppression control bit
1 = MF preamble suppression bit on
0 = MF preamble suppression bit off
1
SLEEP
0, RW
Sleep Mode
Writing a 1 to this bit will cause PHY entering the Sleep mode and
power down all circuit except oscillator and clock generator circuit.
When waking up from Sleep mode (write this bit to 0), the
configuration will go back to the state before sleep; but the state
machine will be reset


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