5222-DS01-R datasheet(42/76 Pages) BOARDCOM

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BCM5222

Preliminary Data Sheet

7/20/04

Broadcom Corporation

Page 30

100BASE-TX Auxiliary Status Register

Document 5222-DS02-405-R

100BASE-TX AUXILIARY STATUS REGISTER

LOCKED

The PHY returns a 1 in bit 9 when the descrambler is locked to the incoming data stream. Otherwise it returns a 0.

CURRENT 100BASE-TX LINK STATUS

The PHY returns a 1 in bit 8 when the 100BASE-TX link status is good. Otherwise it returns a 0.

REMOTE FAULT

The PHY returns a 1 while its link partner is signalling a far-end fault condition. Otherwise it returns a 0.

FALSE CARRIER DETECTED

The PHY returns a 1 in bit 5 of the Extended Status register if a false carrier has been detected since the last time this register

was read. Otherwise it returns a 0.

Table 16: 100BASE-X Auxiliary Status Register (Address 17d, 11h)

Bit

Name

R/W

Description

Default

15:10

Reserved

Ignore when read

00h

Locked

1 = Descrambler locked

0 = Descrambler unlocked

Current 100BASE-X

Link Status

1 = Link pass

0 = Link fail

Remote Fault

1 = Remote fault detected

0 = No remote fault detected

Reserved

Ignore when read

False Carrier Detected

1 = False carrier detected since last read

0 = No false carrier since last read

Bad ESD Detected

1 = ESD error detected since last read

0 = No ESD error since last read

Receive Error Detected

1 = Receive error detected since last read

0 = No receive error since last read

Transmit Error Detected

1 = Transmit error code received since last read

0 = No transmit error code received since last read

Lock Error Detected

1 = Lock error detected since last read

0 = No lock error since last read

MLT3 Code Error Detected

1 = MLT3 code error detected since last read

0 = No MLT3 code error since last read

Note: R/W = Read/Write, RO = Read only, SC = Self Clear, LL = Latched Low, LH = Latched High, LL & LH Clear after

read operation. Use default values of reserved bit(s) when writing to reserved bit(s).

5222-DS01-R Datasheet(PDF) 42 Page - Broadcom Corporation.

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