Altera Arria V Avalon-ST - Manual (Page 65)

Signal Direction Description
currentspeed[1:0] Output Indicates the current speed of the PCIe link. The following
encodings are defined:
• 2b’00: Undefined
• 2b’01: Gen1
• 2b’10: Gen2
• 2b’11: Gen3
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: LOs
• 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
Related Information
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Altera Corporation Interfaces and Signal Descriptions
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