Data Sheet

Ethernet Controller I210 —PCIe Programming Interface
606
9.4.6.5 Device Control (0xA8; RW)
This register controls the PCIe specific parameters.
27:26 RO 00b
Slot Power Limit Scale
Hardwired in the I210 to 0b, as the I210 consumes less than the 25 W allowed for its form
factor.
28 RO 1b
1
Function Level Reset (FLR) Capability
A value of 1b indicates the function supports the optional FLR mechanism.
31:29 RO 000b Reserved
1. Loaded from Flash
.
Bits R/W Default Description
0RW0b
Correctable Error Reporting Enable
Enable report of correctable errors.
1RW0b
Non-Fatal Error Reporting Enable
Enable report of non fatal errors.
2RW0b
Fatal Error Reporting Enable
Enable report of fatal errors.
3RW0b
Unsupported Request Reporting Enable
Enable report of unsupported requests error.
4RW1b
Enable Relaxed Ordering
If this bit is set, the I210 is permitted to set the Relaxed Ordering bit in the attribute field of
write transactions that do not need strong ordering. For more details, refer to the description
about the RO_DIS bit in the CTRL_EXT register bit in Section 8.2.3.
7:5 RW
000b (128
bytes)
Max Payload Size
This field sets maximum TLP payload size for the I210. As a receiver, the I210 must handle
TLPs as large as the set value. As a transmitter, the I210 must not generate TLPs exceeding the
set value.
The max payload size supported in the I210 Device capabilities register indicates permissible
values that can be programmed.
Note: According to PCIe spec, this field shall not be reset on FLR.
8R00b
Extended Tag field Enable
Not implemented in the I210.
9R00b
Phantom Functions Enable
Not implemented in the I210.
10 RWS 0b
Auxiliary Power PM Enable
When set, enables the I210 to draw AUX power independent of PME AUX power.
Bits R/W Default Description