Altera Stratix V Avalon-ST - Manual (Page 91)

Signal I/O Description
derr_rpl
Output Indicates an uncorrectable error in the retry buffer. This signal is
for debug only. (1)
derr_cor_ext_rpl0
Output Indicates a corrected ECC error in the retry buffer. This signal is
for debug only. Because the error was corrected by the IP core,
no Application Layer intervention is required. (1)
rxfc_cplbuf_ovf Output The optional status signal is available when you turn on Track
Receive Completion Buffer Overflow in the parameter editor.
Because the RX buffer completion space advertises infinite
credits for Endpoints, you can use this status bit as an additional
check to complement the soft logic that tracks space in the
completion buffer.
Notes:
1. Debug signals are not rigorously verified and should only be used to observe behavior. Debug signals
should not be used to drive logic custom logic.
Related Information
Avalon-ST RX Interface on page 5-2
Interrupts for Endpoints
Refer to Interrupts for detailed information about all interrupt mechanisms.
Table 5-9: Interrupt Signals for Endpoints
Signal Direction Description
app_msi_req Input Application Layer MSI request. Assertion causes an MSI posted
write TLP to be generated based on the MSI configuration
register values and the
app_msi_tc
and
app_msi_num
input
ports.
app_msi_ack Output Application Layer MSI acknowledge. This signal acknowledges
the Application Layer's request for an MSI interrupt.
app_msi_tc[2:0] Input Application Layer MSI traffic class. This signal indicates the
traffic class used to send the MSI (unlike INTX interrupts, any
traffic class can be used to send MSIs).
UG-01097_avst
2014.12.15
Interrupts for Endpoints 5-39
Interfaces and Signal Descriptions Altera Corporation
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