Intel Xeon X3460 BX80605X3460 User Manual

108

Intel® Xeon® Processor 3400 Series Datasheet, Volume 2

The PCI Express Device Status register provides information about PCI Express device 
specific parameters associated with the device.

15:6

RO

000h

5

RO

0h

Transactions Pending
0 = This bit cleared only when all Completions for any outstanding Non-

Posted Requests it owns have been received.

1 = Indicates that the DMA device has outstanding Non-Posted Request 

which it has issued either towards main memory or a peer PCI Express 

port, which have not been completed.

4

RO

0

3

RO

0

Unsupported Request Detected
This bit applies only to the root/DMI ports.This bit indicates that the root 

port detected an Unsupported Request. Errors are logged in this register 

regardless of whether error reporting is enabled or not in the Device Control 

Register. 
0 = No unsupported request detected by the root port.

1 = Unsupported Request detected at the device/port. These unsupported 

requests are NP requests inbound that the root port received and it 

detected them as unsupported requests (for example, address decoding 

failures that the root port detected on a packet, receiving inbound lock 

reads, BME bit is clear and so forth). Note that this bit is not set on 

peer-to-peer completions with UR status that are forwarded by the root 

port to the PCI Express link.

2

RO

0

Fatal Error Detected
This bit applies only to the root/DMI ports. This bit indicates that a fatal 

(uncorrectable) error is detected by the device. Errors are logged in this 

register regardless of whether error reporting is enabled or not in the Device 

Control register. 
0 = No Fatal errors detected

1 = Fatal errors detected

1

RO 

0

Non Fatal Error Detected
This bit applies only to the root/DMI ports. This bit gets set if a non-fatal 

uncorrectable error is detected by the device. Errors are logged in this 

register regardless of whether error reporting is enabled or not in the Device 

Control register. 
0 = No non-Fatal Errors detected

1 = Non Fatal errors detected

0

RO

0

Correctable Error Detected
This bit applies only to the root/DMI ports. This bit gets set if a correctable 

error is detected by the device. Errors are logged in this register regardless 

of whether error reporting is enabled or not in the PCI Express Device 

Control register.
0 = No correctable errors detected

1 = Correctable errors detected