IDT Non-Transparent Mode Operation
PES16NT2 User Manual
10 - 90
April 15, 2008
Notes
PCIE_SCRATCHPAD[0..1] - Scratchpad [0..1] (0x0D8-ODC)
PCIE_INDBELL - Inbound Doorbell (0x0E0)
PCIE_OUTDBELL - Outbound Doorbell (0x0E4)
PCIE_INTSTS - Interrupt Status (0x0E8)
Bit
Field
Field
Name
Type
Default
Value
Description
31:0
SCRATCHPAD
RW
0x0
Scratchpad Value.
This scratchpad register may be read
and written from both sides of the non-transparent bridge.
Scratchpad registers may not be accessed using the
Extended Configuration Space Data (ECFGDATA) regis-
ter. The behavior of scratchpad register accesses using
this mechanism is undefined.
Bit
Field
Field
Name
Type
Default
Value
Description
31:0
INDBELL
RW1C
0x0
Inbound Doorbell.
Each bit in this field corresponds to sta-
tus of one of the 32 inbound doorbells.The state of these
bits is determined by the value written by an agent to the
Outbound Doorbell (OUTDBELL) register located in PCI
configuration space on the opposite side of the of the non-
transparent bridge.
Bit
Field
Field
Name
Type
Default
Value
Description
31:0
OUTDBELL
RW
0x0
Outbound Doorbell.
Each bit in this field corresponds to
status of one of the 32 outbound doorbells. Setting a bid in
this register results in the corresponding bit being set in the
Inbound Doorbell (INDBELL) register located in PCI config-
uration space on the opposite side of the non-transparent
bridge.
Bit
Field
Field
Name
Type
Default
Value
Description
0
INMSG0
RW1C
0x0
Inbound Message 0.
This bit is set whenever a value is
written to the OUTMSG0 register located in PCI configura-
tion space on the opposite side of the non-transparent
bridge. The action taken when this bit is set is determined
by the Interrupt Control 0 (INTCTL0) register.
1
INMSG1
RW1C
0x0
Inbound Message 1.
This bit is set whenever a value is
written to the OUTMSG1 register located in PCI configura-
tion space on the opposite side of the non-transparent
bridge. The action taken when this bit is set is determined
by the Interrupt Control 0 (INTCTL0) register.
Содержание 89HPES16NT2
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Страница 20: ...IDT Register List PES16NT2 User Manual xiv April 15 2008 Notes...
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Страница 284: ...IDT Non Transparent Mode Operation PES16NT2 User Manual 10 154 April 15 2008 Notes...