Altera Arria 10 Avalon-MM User Manual
Page 114
Error
Type
Description
In all cases the TLP is deleted in the Hard IP block and
not presented to the Application Layer. If the TLP is a
non-posted request, the Hard IP block generates a
completion with Unsupported Request status.
Unsupported Requests
for Root Port
Uncorrectable
(fatal)
This error occurs whenever a component receives an
Unsupported Request including:
• Unsupported message
• A Type 0 Configuration Request TLP
• A 64-bit memory transaction which the 32 MSBs of
an address are set to 0.
• A memory transaction that does not match the
address range defined by the Base and Limit Address
registers
Completion timeout
Uncorrectable
(non-fatal)
This error occurs when a request originating from the
Application Layer does not generate a corresponding
completion TLP within the established time. It is the
responsibility of the Application Layer logic to provide
the completion timeout mechanism. The completion
timeout should be reported from the Transaction Layer
using the
cpl_err[0]
signal.
Completer abort
(1)
Uncorrectable
(non-fatal)
The Application Layer reports this error using the
cpl_
err[2]
signal when it aborts receipt of a TLP.
9-4
Transaction Layer Errors
UG-01145_avmm
2015.05.14
Altera Corporation
Error Handling