ATS Capability Header Register @0x5c0

This location contains the ATS Extended Capabilities Register, its Capability ID, Version, and a pointer to the next capability.

Table 1. ats_cap_header
Bits SW Name Description Reset
15:0 R ATS Extended Capability ID [ATSCAPID] Indicates the ATS Extended Capability structure. This field must return a Capability ID of 000Fh indicating that this is an ATS Extended Capability structure. 0x0F
19:16 R ats_cap_version_ [ATSCAPVER] Specifies the SIG assigned value for the version of the capability structure. 0x1
31:20 R Next Capability Offset [ATSNXTCAP] Indicates offset to the next PCI Express capability structure. 0x0