DSTS—Device Status Register
Address Offset: 4Ah–4Bh
Transactions Pending (TDP) — RO. This bit has no meaning for the root port since
only one transaction may be pending to the Intel
occur until it has already returned to 0.
AUX Power Detected (APD) — RO. The root port contains AUX power for wakeup.
Unsupported Request Detected (URD) — R/WC. This bit indicates an unsupported
request was detected.
Fatal Error Detected (FED) — R/WC. This bit indicates a fatal error was detected.
0 = Fatal has not occurred.
1 = A fatal error occurred from a data link protocol error, link training error, buffer
Non-Fatal Error Detected (NFED) — R/WC. This bit indicates a non-fatal error was
0 = Non-fatal has not occurred.
1 = A non-fatal error occurred from a poisoned TLP, unexpected completions,
Correctable Error Detected (CED) — R/WC. This bit indicates a correctable error
0 = Correctable has not occurred.
1 = The port received an internal correctable error from receiver errors / framing
overflow, or malformed TLP.
unsupported requests, completer abort, or completer timeout.
errors, TLP CRC error, DLLP CRC error, replay num rollover, replay timeout.
PCI Express* Configuration Registers (Desktop and Mobile Only)
ICH7, so a read of this bit cannot
ICH7 Family Datasheet