VT6103 datasheet(17/46 Pages) VIA

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VT6103 - Fast Ethernet 10 / 100 PHY / Transceiver

Revision 1.1 April 15, 2002

-11-

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Offset 16 (10h) – PHY Configuration 1 (0800h).............RW

15-11 PHY Address........................................ default = 01h

Fiber Mode

Disable ...................................................default

Enable

9Cable Type

UTP5 and STP (100 ohm) cable ............default

STP 150 ohm cable

Force PHY in Link Good Status

Disable ...................................................default

Enable

Base10Tx Low Squelch Level Select

Regular Cable Length ............................default

Long Cable (> 100 meters)

6-5

Programmable LED Output Select

LED0

LED1

LED2

LED3

00 Link/Act

Speed

Duplex

COL ....def

01 Pwr/TxAct Link/RxAct Speed

Duplex

10 Speed100

Speed10

Act

Duplex

11 Pwr/TxAct Link/RxAct Speed

COL

Repeater Mode

Disable ...................................................default

Enable

Interrupt Select

Assert interrupt on INT#........................default

Assert interrupt on MDIO

Symbol Mode .......................................................RO

Disable ...................................................default

Enable

Offset 17 (11h) – PHY Configuration 2 (F7FFh)........... RW

Jabber Detect

0Disable

Enable................................................... default

Signal Quality Error Detect

0Disable

Enable................................................... default

Auto-Polarity Correction

0Disable

Enable................................................... default

Far End Fault Detect

0Disable

Enable................................................... default

Change Seed ........................................ Self Clearing

Disable................................................... default

Enable

10-0 Seed

........................................default = 7FFh

Offset 18 (12h) – PHY Configuration 3 (0800h) ............ RW

Bypass Scrambler and Descrambler Functions

Disable................................................... default

Enable

Bypass 4B5B Encoding and Decoding Functions

Disable................................................... default

Enable

Bypass Symbol Alignment Function

Disable................................................... default

Enable

Bypass NRZI Encoding and Decoding Functions

Disable................................................... default

Enable

Loss Sync Function ............................. Self Clearing

0Disable

Enable................................................... default

Lost Sync Timer Select

722 usec................................................. default

12 msec

9-0

Reserved

........................................always reads 0

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