Altera SerialLite III Streaming MegaCore Function Manuel d'utilisateur télécharger pdf (Page 66)

Condition Error Indication Core Behavior

Sink Core

Diagnostic code word

CRC-32 error

The sink core asserts

error[(lanes+3)-lane]

flag for one clock

cycle.

The sink interface detects a metaframe CRC-

32 error on one of the lanes. These errors are

reported on a per-lane basis for diagnostic

purposes.

Lane alignment

failure during normal

operation

The sink core asserts

error[2] flag for one

clock cycle.

The sink interface detects a loss of lane

alignment during normal operation.

Burst code word

received during

normal operation

The sink core asserts

error[1] flag for one

clock cycle.

The sink interface receives a burst control

word after achieving normal operation.

Normally, the sink interface receives only a

single burst control word at the end of link

initialization.

Rate adaptation FIFO

buffer underflow in

sink interface

The sink core asserts

error[0] flag for one

clock cycle.

There is an underflow on the rate adaptation

FIFO buffer in the sink interface. The core

behavior depends on the operation mode:

• Continuous mode—error is flagged once

an underflow is detected.

• Burst mode—error is flagged only when an

overflow occurs during burst data transfer

across the user interface.

UG-01126

2015.05.04

Error Handling

5-11

SerialLite III Streaming IP Core Design Guidelines

Altera Corporation

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Altera SerialLite III Streaming MegaCore Function Manuel d'utilisateur Page 66

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