IDT 89HPES48T12G2, User Manual

Page: 206 / 276

IDT PCI to PCI Bridge and Proprietary Port Specific Registers
PES48T12G2 User Manual 15 - 32 April 5, 2013
ECFGDATA - Extended Configuration Space Access Data (0x0FC)
Advanced Error Reporting (AER) Enhanced Capability
AERCAP - AER Capabilities (0x100)
AERUES - AER Uncorrectable Error Status (0x104)
11:8 EREG RW 0x0 Extended Register Number. This field selects the extended con-
figuration register number as defined by Section 7.2.2 of the PCI
Express Base Specification, Rev. 2.0.
The value of this register must not be programmed to point to the
address offset of this register (i.e., 0xF8) or the ECFGDATA regis-
ter (i.e., 0xFC). Violation of this rule produces undefined results.
Also, the value of this register must not be programmed to point to
the address offset of the global address space registers (GASAA-
DDR and GASADATA). Violation of this rule produces undefined
results.
31:12 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
31:0 DATA RW 0x0 Configuration Data. A read from this field will return the configura-
tion space register value pointed to by the ECFGADDR register. A
write to this field will update the contents of the configuration space
register pointed to by the ECFGADDR register with the value writ-
ten. For both reads and writes, the byte enables correspond to
those used to access this field.
SMBus reads of this field return a value of zero and SMBus writes
have no effect.
Bit
Field
Field
Name
Type
Default
Value
Description
15:0 CAPID RO 0x1 Capability ID. The value of 0x1 indicates an advanced error
reporting capability structure.
19:16 CAPVER RO 0x1 Capability Version. The value of 0x1. indicates compatibility with
version 1 of the specification.
31:20 NXTPTR RWL Refer to sec-
tion Capabil-
ity Structures
on page 14-3.
Next Pointer. Next capability pointer. The value of 0x0 terminates
the list.
Bit
Field
Field
Name
Type
Default
Value
Description
0 UDEF RW1C 0x0
Sticky
Undefined. This bit is no longer used in this version of the specifi-
cation.
Bit
Field
Field
Name
Type
Default
Value
Description