Responses to abnormal terminations to configuration transactions are shown in the following table.
| Transfer Type | Abnormal Condition | Bridge Response |
|---|---|---|
| Config Read or Write | Bus number not in the range of primary bus number through subordinate bus number. | SLVERR response is asserted. |
| Config Read or Write | Completion timeout. | For PCIe Configuration Read/Write request, an OKAY response and 0s data are given on the AXI4 memory mapped bus. |
| Config Write | Bus number in the range of secondary bus number through subordinate bus number and UR is returned. | SLVERR response is asserted. |