Zynq UltraScale+ Devices Register Reference > Module Summary > PCIE_ATTRIB Module > ATTR_91 (PCIE_ATTRIB) Register
Register Name | ATTR_91 |
---|---|
Relative Address | 0x000000016C |
Absolute Address | 0x00FD48016C (PCIE_ATTRIB) |
Width | 32 |
Type | rwNormal read/write |
Reset Value | 0x00000000 |
Description | ATTR_91 |
This register should only be written to during reset of the PCIe block
Field Name | Bits | Type | Reset Value | Description |
---|---|---|---|---|
attr_ll_ack_timeout_en | 15 | rwNormal read/write | 0x0 | Enables the Ack/Nak Latency Timer to use the user-defined LL_ACK_TIMEOUT value (or combined with the built-in value, depending on LL_ACK_TIMEOUT_FUNC). If FALSE, the built-in value is used. |
attr_ll_ack_timeout | 14:0 | rwNormal read/write | 0x0 | Sets a user-defined timeout for the Ack/Nak Latency Timer to force any pending ACK or NAK DLLPs to be transmitted; refer to LL_ACK_TIMEOUT_EN and LL_ACK_TIMEOUT_FUNC to see how this value is used. The unit for this attribute is in symbol times, which is 4ns at GEN1 speeds and 2ns at GEN2. |