SLLSE76Q March 2011 – March 2024 TUSB7320 , TUSB7340
PRODUCTION DATA
The status register provides information about the PCI Express interface to the system.
PCI register offset: 06h
Register type: Read-only, Read/Clear
Default value: 0010h
Bit No. | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reset State | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BIT | FIELD NAME | ACCESS | DESCRIPTION |
---|---|---|---|
15 | PAR_ERR | rcu | Detected parity error. This bit is set when the PCI Express
interface receives a poisoned TLP. This bit is set regardless of the
state of bit 6 (PERR_ENB) in the command register (offset 04h, see
Command Register). 0 = No parity error detected 1 = Parity error detected |
14 | SYS_ERR | rcu | Signaled system error. This bit is set when the host controller
sends an ERR_FATAL or ERR_NONFATAL message and bit 8 (SERR_ENB) in
the command register (offset 04h, see Command Register) is set. 0 = No error signaled 1 = ERR_FATAL or ERR_NONFATAL signaled |
13 | MABORT | rcu | Received controller abort. This bit is set when the PCI Express interface of the host controller receives a completion-with-unsupported-request status. 0 = Unsupported request not received on the PCI Express interface 1 = Unsupported request received on the PCI Express interface |
12 | TABORT_REC | rcu | Received target abort. This bit is set when the PCI Express interface of the host controller receives a completion-with-completer-abort status. 0 = Completer abort not received on the PCI Express interface 1 = Completer abort received on the PCI Express interface |
11 | TABORT_SIG | rcu | Signaled target abort. This bit is set when the PCI Express interface completes a request with completer abort status. 0 = Completer abort not signaled on the PCI Express interface 1 = Completer abort signaled on the PCI Express interface |
10:9 | DEVSEL_TIMING | r | DEVSEL Timing. These bits are read only zero, because they do not apply to PCI Express. |
8 | DATAPAR | rcu | controller data parity error. This bit is set if bit 6
(PERR_ENB) in the command register (offset 04h, see Command Register) is set and the host controller receives a completion
with data marked as poisoned on the PCI Express interface or poisons
a write request received on the PCI Express interface. 0 = No uncorrectable data error detected on the primary interface 1 = Uncorrectable data error detected on the primary interface. |
7 | FBB_CAP | r | Fast back-to-back capable. This bit does not have a meaningful context for a PCI Express device and is hardwired to 0b. |
6 | RSVD | r | Reserved. Returns zeros when read. |
5 | 66MHZ | r | 66 MHz capable. This bit does not have a meaningful context for a PCI Express device and is hardwired to 0b. |
4 | CAPLIST | r | Capabilities list. This bit returns 1b when read, indicating that the host controller supports additional PCI capabilities. |
3 | INT_STATUS | ru | Interrupt Status. This bit reflects the interrupt status of the function. |
2:0 | RSVD | r | Reserved. Returns zeros when read. |