Altera Arria V Avalon-MM Bedienungsanleitung Seite 143

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Table 11-2: ECRC Operation on RX Path
ECRC Forwarding ECRC Check Enable
(5)
ECRC Status Error TLP Forward to Application Layer
No
No
none No Forwarded
good No Forwarded without its ECRC
bad No Forwarded without its ECRC
Yes
none No Forwarded
good No Forwarded without its ECRC
bad Yes Not forwarded
Yes
No
none No Forwarded
good No Forwarded with its ECRC
bad No Forwarded with its ECRC
Yes
none No Forwarded
good No Forwarded with its ECRC
bad Yes Not forwarded
ECRC on the TX Path
When the ECRC generation option is on, the TX path generates ECRC. If you turn on ECRC
forwarding, the ECRC value is forwarded with the TLP. The following table summarizes the TX ECRC
generation and forwarding. All unspecified cases are unsupported and the behavior of the Hard IP is
unknown.In this table, if TD is 1, the TLP includes an ECRC. TD is the TL digest bit of the TL packet
described in Appendix A, Transaction Layer Packet (TLP) Header Formats.
(5)
The ECRC Check Enable field is in the Configuration Space Advanced Error Capabilities and
Control Register.
UG-01105_avmm
2014.12.15
ECRC on the TX Path
11-3
Optional Features
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