IDT 89HPES16NT2, User Manual

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IDT Non-Transparent Mode Operation
PES16NT2 User Manual 10 - 86 April 15, 2008
Notes
PCIE_PTCDATA - Punch Through Configuration Data (0x0A4)
14:12 FUNC RW 0x0
1
Function Number. This field selects the function number
as defined by Section 7.2.2 of the PCI Express Base Spec-
ification, Rev. 1.0a
19:15 DEV RW 0x0
1
Device Number. This field selects the device number as
defined by Section 7.2.2 of the PCI Express Base Specifi-
cation, Rev. 1.0a
27:20 BUS RW 0x0
1
Bus Number. This field selects the bus number as defined
by Section 7.2.2 of the PCI Express Base Specification,
Rev. 1.0a
29:28 Reserved RO 0x0 Reserved field.
30 CFGTYPE RW 0x0 Configuration Access Type. This field selects the type of
configuration access generated using the punch through
mechanism.
0x0 - (type0) type 0 configuration access
0x1 - (type1) type 1 configuration access
31 OP RW 0x0
1
Operation Select. This field selects the type of configura-
tion operation to be performed when the PTCDATA regis-
ter is written
0x0 - (read) configuration read
0x1 - (write) configuration write
1.
Not reset by external fundamental reset or internal/external hot reset
Bit
Field
Field
Name
Type
Default
Value
Description
31:0 DATA RW 0x0
1
1.
Not reset by external fundamental reset or internal/external hot reset
Configuration Data. A write to this field will generate a
configuration read or write transaction, as selected by the
OP field in the PTCCFG register, on the opposite side of
the non-transparent bridge.
The byte enables in the generated transaction on the oppo-
site side of the non-transparent bridge match those of the
write to this register.
When a configuration write operation is selected, the value
written to this field is the value used in the configuration
write transaction. When a configuration read operation is
selected, the value written to this field is ignored and the
value returned by the read may be read from this field
when the DONE bit is set in the PTCSTS register.
Status for the generated transaction is reported in the
PTCSTS register.
Bit
Field
Field
Name
Type
Default
Value
Description