
Signal Direction Description
ltssmstate[4:0]
Output LTSSM state: The LTSSM state machine encoding defines the
following states:
• 00000: Detect.Quiet
• 00001: Detect.Active
• 00010: Polling.Active
• 00011: Polling.Compliance
• 00100: Polling.Configuration
• 00101: Polling.Speed
• 00110: config.Linkwidthstart
• 00111: Config.Linkaccept
• 01000: Config.Lanenumaccept
• 01001: Config.Lanenumwait
• 01010: Config.Complete
• 01011: Config.Idle
• 01100: Recovery.Rcvlock
• 01101: Recovery.Rcvconfig
• 01110: Recovery.Idle
• 01111: L0
• 10000: Disable
• 10001: Loopback.Entry
• 10010: Loopback.Active
• 10011: Loopback.Exit
• 10100: Hot.Reset
• 10101: L0s
• 11001: L2.transmit.Wake
• 11010: Speed.Recovery
• 11011: Recovery.Equalization, Phase 0
• 11100: Recovery.Equalization, Phase 1
• 11101: Recovery.Equalization, Phase 2
• 11110: recovery.Equalization, Phase 3
rx_par_err
Output When asserted for a single cycle, indicates that a parity error was
detected in a TLP at the input of the RX buffer. This error is
logged as an uncorrectable internal error in the VSEC registers.
For more information, refer to Uncorrectable Internal Error
Status Register. If this error occurs, you must reset the Hard IP if
this error occurs because parity errors can leave the Hard IP in an
unknown state.
4-28
Reset, Status, and Link Training Signals
UG-01097_sriov
2014.12.15
Altera Corporation
Interfaces and Signal Descriptions
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