Altera SerialLite II Protocol Manual de usuario descargar pdf (Pagina 71)

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SerialLite II Protocol Reference Manual

SerialLite II Specification

Catastrophic Error Events

Catastrophic errors are caused by the following events:

■ Reverse signal polarity is detected, and the design does not have

polarity reversal enabled.

■ Reverse lane order is detected, and the design does not have lane

order reversal enabled.

■ Lanes are in non-sequential order (that is, not in forward or reverse

direction)

Such errors are design issues that can only be encountered during system

validation and debug. End-equipment users are never intended to

encounter such errors.

Action

Should a catastrophic error occur, it will cause the SerialLite II interface to

enter into a non-recoverable state. You will need to reassert the reset

signal on the circuit board or power-cycle the circuit board.

Link Error Events

The following errors are considered link error events:

■ Eight consecutive {|TS1|} received in all lanes simultaneously in the

link-up state, as shown in Figure 2–43 on page 2–72.

■ Loss of character alignment

■ Loss of lane alignment

■ Loss of characters from underflow/overflow

■ Data error threshold exceeded

■ Retry-on-error timer expired three times

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Altera SerialLite II Protocol Manual de usuario Pagina 71