Data Sheet

PCIe Programming Interface—Ethernet Controller I210
623
9.5.3.2 TPH Requester Capabilities (0x1A4; RO)
9.5.3.3 TPH Requester Control (0x1A8; R/W)
Bit
Location
Attribute
Default
Value
Description
0RO1
No ST Mode Supported: When set indicates the Function is capable of generating Requests
without using ST.
1RO0
Interrupt Vector Mode Supported: Cleared to indicate that the I210 does not support Interrupt
Vector Mode of operation.
2 RO 1 Device Specific Mode: Set to indicate that the I210 supports Device Specific Mode of operation.
7:3 RO 0 Reserved
8RO0
Extended TPH Requester Supported – Cleared to indicate that the function is not capable of
generating requests with Extended TPH TLP Prefix.
10:9 RO 01b
ST Table Location – Value indicates if and where the ST Table is located. Defined Encodings
are:
00b: ST Table is not present.
01b: ST Table is located in the TPH Requester Capability structure.
10b: ST Table is located in the MSI-X Table structure.
11b: Reserved
Default value of 01b indicates that function supports ST table that’s located in the TPH
Requester Capability structure.
15:11 RO 0x0 Reserved
26:16 RO 0x7
ST_Table Size – System software reads this field to determine the ST_Table_Size N, which is
encoded as N-1.
The I210 supports a table with 8 entries.
31:27 RO 0x0 Reserved
Bit
Location
Attribute
Default
Value
Description
2:0 RW 0x0
ST Mode Select – Indicates the ST mode of operation
selected. The ST mode encodings are as defined below
000b – No Table Mode
001b – Interrupt Vector Mode (not supported by the I210)
010b – Device Specific Mode
0thers – reserved for future use
The default value of 000 indicates No Table mode of operation.
7:3 RO 0x0 Reserved
9:8 RW 0x0
TPH Requester Enable:
Defined Encodings are:
00b: The I210 is not permitted to issue transactions with TPH or Extended TPH as Requester
01b: The I210 is permitted to issue transactions with TPH as Requester and is not permitted to
issue transactions with Extended TPH as Requester
10b: Reserved
11b: The I210 is permitted to issue transactions with TPH and Extended TPH as Requester (the
I210 does not issue transactions with Extended TPH).
31:10 RO 0x0 Reserved