Altera SerialLite II Protocol - Manual (Page 71)

Altera Corporation 71
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