Data Sheet

PCIe Programming Interface—Ethernet Controller I210
607
9.4.6.6 Device Status (0xAA; R/W1C)
This register provides information about PCIe device’s specific parameters.
11 RW 1b
Enable No Snoop
Snoop is gated by NONSNOOP bits in the GCR register in the CSR space.
14:12 RW 010b
Max Read Request Size - this field sets maximum read request size for the Device as a
requester.
000b = 128 bytes
001b = 256 bytes.
010b = 512 bytes (the default value).
011b = 1 KB.
100b = Reserved.
101b = Reserved.
110b = Reserved.
111b = Reserved.
15 RW 0b
Initiate Function Level Reset
A write of 1b initiates an FLR to the function. The value read by software from this bit is always
0b.
Bits R/W Default Description
0 R/W1C 0b
Correctable Error Detected
Indicates status of correctable error detection.
1 R/W1C 0b
Non-Fatal Error Detected
Indicates status of non-fatal error detection.
2 R/W1C 0b
Fatal Error Detected
Indicates status of fatal error detection.
3 R/W1C 0b
Unsupported Request Detected
Indicates that the I210 received an unsupported request.
4RO0b
Aux Power Detected
If aux power is detected, this field is set to 1b. It is a strapping signal from the periphery.
Reset on LAN_PWR_GOOD and GIO Power Good only.
5RO0b
Transactions Pending
Indicates whether the I210 has any transaction pending.
15:6 RO 0x00 Reserved
Bits R/W Default Description