PL_DISABLE_AUTO_EQ_SPEED_CHANGE_TO_GEN5 (CPM5_PCIE_ATTR) Register

Versal Adaptive SoC Register Reference (AM012)

Document ID
AM012
Release Date
2023-08-29
Revision
1.3

PL_DISABLE_AUTO_EQ_SPEED_CHANGE_TO_GEN5 (CPM5_PCIE_ATTR) Register Description

Register NamePL_DISABLE_AUTO_EQ_SPEED_CHANGE_TO_GEN5
Relative Address0x00000003BC
Absolute Address 0x00FCE083BC (CPM5_PCIE0_ATTR)
0x00FCE883BC (CPM5_PCIE1_ATTR)
Width32
TyperwNormal read/write
Reset Value0x00000000
DescriptionDownstream Port Auto Speed Change to Gen5: When FALSE enable Downstream Port to autonomously change speed to Gen4. When TRUE will require software to issue "link retrain". Usually set to TRUE only to overcome VIP modelling limitations.

This register should only be written to during reset of the PCIe block

PL_DISABLE_AUTO_EQ_SPEED_CHANGE_TO_GEN5 (CPM5_PCIE_ATTR) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
attr 0rwNormal read/write0x0Downstream Port Auto Speed Change to Gen5: When FALSE enable Downstream Port to autonomously change speed to Gen4. When TRUE will require software to issue "link retrain". Usually set to TRUE only to overcome VIP modelling limitations.