IDT Configuration Registers
PES16T4G2 User Manual
8 - 37
January 28, 2013
Notes
MSIADDR - Message Signaled Interrupt Address (0x0D4)
MSIUADDR - Message Signaled Interrupt Upper Address (0x0D8)
MSIMDATA - Message Signaled Interrupt Message Data (0x0DC)
Subsystem ID and Subsystem Vendor ID
SSIDSSVIDCAP - Subsystem ID and Subsystem Vendor ID Capability (0x0F0)
Bit
Field
Field
Name
Type Default
Value
Description
1:0
Reserved
RO
0x0
Reserved field.
31:2
ADDR
RW
0x0
Message Address. This field specifies the lower portion of the
DWORD address of the MSI memory write transaction.
The PES16T4G2 assumes that all downstream port generated
MSIs are targeted to the root and routes these transactions to the
upstream port. Configuring the address contained in a downstream
port’s MSIADDR and MSIADDRU registers to an address that
does not route to the upstream port and generating an MSI pro-
duces undefined results.
Bit
Field
Field
Name
Type Default
Value
Description
31:0
UADDR
RW
0x0
Upper Message Address. This field specifies the upper portion of
the DWORD address of the MSI memory write transaction. If the
contents of this field are non-zero, then 64-bit address is used in
the MSI memory write transaction. If the contents of this field are
zero, then the 32-bit address specified in the MSIADDR field is
used.
The PES16T4G2 assumes that all downstream port generated
MSIs are targeted to the root and routes these transactions to the
upstream port. Configuring the address contained in a downstream
port’s MSIADDR and MSIADDRU registers to an address that
does not route to the upstream port and generating an MSI pro-
duces undefined results.
Bit
Field
Field
Name
Type Default
Value
Description
15:0
MDATA
RW
0x0
Message Data. This field contains the lower 16-bits of data that
are written when a MSI is signalled.
31:16
Reserved
RO
0x0
Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description
7:0
CAPID
RO
0xD
Capability ID. The value of 0xD identifies this capability as a SSID/
SSVID capability structure.
Summary of Contents for 89HPES16T4G2
Page 10: ...IDT Table of Contents PES16T4G2 User Manual iv January 28 2013 Notes...
Page 12: ...IDT List of Tables PES16T4G2 User Manual vi January 28 2013 Notes...
Page 14: ...IDT List of Figures PES16T4G2 User Manual viii January 28 2013 Notes...
Page 18: ...IDT Register List PES16T4G2 User Manual xii January 28 2013 Notes...
Page 30: ...IDT PES16T4G2 Device Overview PES16T4G2 User Manual 1 12 January 28 2013 Notes...
Page 48: ...IDT Link Operation PES16T4G2 User Manual 3 10 January 28 2013 Notes...
Page 68: ...IDT SMBus Interfaces PES16T4G2 User Manual 5 18 January 28 2013 Notes...
Page 72: ...IDT Power Management PES16T4G2 User Manual 6 4 January 28 2013 Notes...
Page 140: ...IDT Configuration Registers PES16T4G2 User Manual 8 62 January 28 2013 Notes...