Acs Extended Capability - IDT 89HPES64H16G2 User Manual

IDT PCI to PCI Bridge and Proprietary Port Specific Registers

ACS Extended Capability

ACSECAPH - ACS Extended Capability Header (0x320)
Bit
Field
15:0
19:16
31:20
ACSCAP - ACS Capability Register (0x324)
Bit
Field
0
1
2
3
PES64H16G2 User Manual
Field Default
Type
Name Value
CAPID RO 0xD
CAPVER RO 0x1
NXTPTR RWL Refer to sec-
tion Capabil-
ity Structures
on page 15-3.
Field Default
Type
Name Value
V Upstre Upstream
am Port:
Port: 0x0
RO Downstream
Down- Port:
stream 0x1
Port:
RWL
B Upstre Upstream
am Port:
Port: 0x0
RO Downstream
Down- Port:
stream 0x1
Port:
RWL
R Upstre Upstream
am Port:
Port: 0x0
RO Downstream
Down- Port:
stream 0x1
Port:
RWL
C Upstre Upstream
am Port:
Port: 0x0
RO Downstream
Down- Port:
stream 0x1
Port:
RWL
Description
Capability ID. The value of 0xD indicates an ACS extended capa-
bility structure.
Capability Version. The value of 0x1 indicates compatibility with
the PCI Express 2.0 specification.
Next Pointer. Next capability pointer. The value of 0x0 terminates
the list.
Description
ACS Source Validation. If set, indicates the port implements ACS
Source Validation.
ACS Translation Blocking. If set, indicates the port implements
ACS Translation Blocking.
ACS P2P Request Redirect. If set, indicates the port implements
ACS Peer-to-Peer Request Redirect.
ACS P2P Completion Redirect. If set, indicates the port imple-
ments ACS Peer-to-Peer Completion Redirect.
16 - 49 April 5, 2013