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Cirrus Logic CobraNet User Manual

Page 136

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136

©

Copyright 2006 Cirrus Logic, Inc.

DS651PM25

CobraNet Programmer’s Reference
Error Code Reference

Byte

Code

Flash

Code

Type Name Description

Expected

Conditions

Unexpected

Conditions

85 3,6,3

TX

ETHERTX_CRS

Ethernet carrier

sense did not

assert in response

to transmission.

May be reported if

transmission is in

progress when

Ethernet is

disconnected.

-

86 5,6,3 TXQUIET

ETHERTX_LATECOLL

Late collision

occurred during

transmission.

Late collisions can

occur on a repeater

network if network

diameter exceeds

200 meters.

CobraNet's

collision avoidance

mechanism for

repeaters allows

network diameters
up to 2 kilometers.

On such networks,

late collisions are

expected in

transmission of

control data. The

collision detection

mechanism of a

device on the

network is

inoperative or a

device is

mistakenly

manually

configured for full-

duplex operation

on a repeater

network.

-

87 7,6,3

RXQUIET ETHERRX_SHORTPACKET

Received an

illegally short

Ethernet packet.

Collisions are

occurring on the

network.

A transmitter on

the network is

misbehaving.

Problem with

Ethernet controller.

88 1,7,3

TX

SCI_RXOVER

Asynchronous

serial receive

overrrun error.

Bad serial baud

rate selected.

-

89 3,7,3

TX

ETHERTX_LOSS_CARRIER

Loss of carrier

during Ethernet

frame

transmission.

Transmission in

progress when

Ethernet was

disconnected.

-

90 5,7,3

TX

SCI_RXFRAMING

Asynchronous

serial receive

framing error.

Wrong serial data

format or baud rate

selected.

-

91 7,7,3

RX

ETHERRX_LATECOLL

Late collision

detected during

reception.

Late collisions can

occur on a repeater

network if network

diameter exceeds

200 meters.

-