Extended Configuration Space Access Registers - Renesas IDT 89HPES4T4 User Manual

IDT Configuration Registers
Notes
PES4T4 User Manual
SSIDSSVID - Subsystem ID and Subsystem Vendor ID (0x0F4)
Bit Field
Type
Field Name
15:0 SSVID RWL
31:16 SSID RWL

Extended Configuration Space Access Registers

ECFGADDR - Extended Configuration Space Access Address (0x0F8)
Bit Field
Type
Field Name
1:0 Reserved RO
7:2 REG RW
11:8 EREG RW
31:12 Reserved RO
ECFGDATA - Extended Configuration Space Access Data (0x0FC)
Bit Field
Type
Field Name
31:0 DATA RW
Default
Value
0x0 SubSystem Vendor ID. This field identifies the manufac-
turer of the add-in card or subsystem.
SSVID values are assigned by the PCI-SIG to insure unique-
ness.
0x0 Subsystem ID. This field identifies the add-in card or sub-
system.
SSID values are assigned by the vendor.
Default
Value
0x0 Reserved field.
0x0 Register Number. This field selects the configuration regis-
ter number as defined by Section 7.2.2 of the PCI Express
Base Specification, Rev. 1.0a
0x0 Extended Register Number. This field selects the extended
configuration register number as defined by Section 7.2.2 of
the PCI Express Base Specification, Rev. 1.0a
0x0 Reserved field.
Default
Value
0x0 Configuration Data. A read from this field will return the
configuration space register value pointed to by the ECF-
GADDR register. A write to this field will update the contents
of the configuration space register pointed to by the ECF-
GADDR register with the value written. For both reads and
writes, the byte enables correspond to those used to access
this field.
When the ECFGADDR register points to the ECFGDATA
register, then reads from ECFGDATA return zero and writes
are ignored. When the ECFGADDR register points to itself,
writes to the ECFGDATA register modify the contents of the
ECFGADDR register.
SMBus reads of this field return a value of zero and SMBus
writes have no effect.
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Description
Description
Description
February 1, 2011