Multicast Extended Capability - IDT 89HPES64H16G2 User Manual

IDT PCI to PCI Bridge and Proprietary Port Specific Registers
ACSECV - ACS Egress Control Vector (0x328)
Bit Field
Field Name
15:0 ECV

Multicast Extended Capability

MCCAPH - Multicast Enhanced Capability Header (0x330)
Bit
Field
15:0
19:16
31:20
PES64H16G2 User Manual
Default
Type
See Description
Field Default
Type
Name Value
CAPID RO 0x12
CAPVER RO 0x1
NXTPTR RWL Refer to sec-
tion Capabil-
ity Structures
on page 15-3.
Value
0x0 Egress Control Vector. This field is used to configure ACS peer-
to-peer egress control. The value in this field is only valid when
ACS peer-to-peer egress control is enabled in the ACSCTL regis-
ter.
Each bit in this register corresponds to a switch port. Bit[0] corre-
sponds to port 0, bit[1] corresponds to port 1, and so on.
When a bit is set, peer-to-peer requests targeting the associated
port or function are blocked or redirected. Refer to Section 6.12.3
of PCI Express 2.0 specification for further details.
The bit corresponding to this port number is read-only and hard-
wired to 0x0. For example, bit[0] is read-only for port 0, bit[1] is
read-only for port 1, and so on.
When the port operates in merged mode, the bit corresponding to
this even numbered port (i.e., bit[N]) and its next in sequence bit
(i.e., bit[N+1]) are read-only with a value of 0x0.
Capability ID. The value of 0x12 indicates a multicast capability
structure.
Capability Version. The value of 0x1 indicates compatibility with
the PCI-SIG Multicast ECN.
Next Pointer. Next capability pointer. The value of 0x0 terminates
the list.
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Description
Description
April 5, 2013