Register Description
12.2.59Offset 12Ch: 
Table 93.  | Offset 12Ch:   | |||
  | 
  | (Sheet 1 of 2) | 
  | |
  | 
  | 
  | 
  | 
  | 
Bits | 
  | Type  | Reset | Description  | 
  | 
  | 
  | 
  | 
  | 
15:14  | 
  | RsvdZ  | 00b | Reserved Zero: Software must write 0 to these bits. | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Internal Bridge Data Error: This bit is set when an error occurs in the internal data queues  | 
13  | 
  | RWCS | 0b  | in the Intel® 41210 Serial to Parallel PCI Bridge in either direction. The 41210 does not log  | 
  | 
  | 
  | 
  | any headers for this error.  | 
  | 
  | 
  | 
  | 
  | 
12  | 
  | RWCS | 0b  | |
  | pin is asserted. There is no header logging associated with the setting of this bit.  | |||
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | PERR# pin is asserted when it is mastering a write (memory, I/O, or configuration) or  | 
  | 
  | 
  | 
  | sourcing data during a split/delayed read completion on its secondary interface. The 41210  | 
  | 
  | 
  | 
  | logs the header of the transaction in which the PERR# is detected (regardless of the data  | 
  | 
  | 
  | 
  | phase in which it is detected) in the   | 
  | 
  | 
  | 
  | |
11  | 
  | RWCS | 0b  | the bridge receives a   | 
  | 
  | 
  | 
  | The header log under this condition is the command, address, and attribute portion of the  | 
  | 
  | 
  | 
  | Split Completion Message.  | 
  | 
  | 
  | 
  | NOTE: This status bit and the associated header log are always updated regardless of  | 
  | 
  | 
  | 
  | whether the PERR# detected was the result of a PCI bus error or of forwarded  | 
  | 
  | 
  | 
  | poisoned data. However, error messages are not escalated to PCI Express* when  | 
  | 
  | 
  | 
  | the PERR# detection is due to forwarded poisoned data.  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | PCI Delayed Transaction Timer Expiry: This bit is set by the 41210 when it detects that a  | 
10  | 
  | RWCS | 0b  | DT   | 
  | 
  | 
  | 
  | transaction. No header is logged. | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | the target of an upstream transaction and an address parity error is detected by the 41210  | 
9  | 
  | RWCS | 0b  | (regardless of whether the bus mode is PCI or   | 
  | 
  | 
  | 
  | transaction in which it detected the address/attribute parity error in the   | 
  | 
  | 
  | 
  | register.  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
8  | 
  | RWCS | 0b  | the target of an upstream transaction and an attribute parity error is detected by the 41210.  | 
  | The 41210 logs the header of the transaction in which it detected the address/attribute  | |||
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | parity error in the  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | (PCI,   | 
7  | 
  | RWCS | 0b  | with target sourcing data to the 41210, and a data parity error was detected by the 41210.  | 
  | 
  | 
  | 
  | The 41210 logs the header of the transaction in which it detected the data parity error in the  | 
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
6  | 
  | RWCS | 0b  | Split Completion Message Data Error: This bit is set when a split completion message is  | 
  | received with an uncorrectable data parity error.  | |||
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | Unexpected Split Completion: This bit is set when a completion is received from   | 
5  | 
  | RWCS | 0b  | that matches the bus number range on the primary side of the 41210 but the Requester  | 
  | ID:tag combination does not match one of the NP transmissions that the 41210 has  | |||
  | 
  | 
  | 
  | |
  | 
  | 
  | 
  | outstanding on   | 
  | 
  | 
  | 
  | 
  | 
4  | 
  | RsvdZ  | 0b  | Reserved Zero: Software must write a 0 to this bit.  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |
3  | 
  | RWCS | 0b  | transaction on the   | 
  | that transaction. This bit is also set when the bridge receives a   | |||
  | 
  | 
  | 
  | Message with Master Abort Status. The header log under this condition is the command,  | 
  | 
  | 
  | 
  | address, and attribute portion of the Split Completion Message.  | 
  | 
  | 
  | 
  | 
  | 
Intel® 41210 Serial to Parallel PCI Bridge Developer’s Manual  | 111  |