Data Sheet

System Manageability—Ethernet Controller I210
723
Where Intel Management Control 1 is as follows:
10.6.3.10.2 Set Intel Management Control Response (Intel Command 0x20)
10.6.3.11 Get Intel Management Control Formats
10.6.3.11.1 Get Intel Management Control Command (Intel Command 0x21)
Where Intel Management Control 1 is as described in Section 10.6.3.10.2.
10.6.3.11.2 Get Intel Management Control Response (Intel Command 0x21)
Bit # Default value Description
00b
Enable Critical Session Mode (Keep PHY Link Up and Veto Bit)
0b — Disabled
1b — Enabled
When critical session mode is enabled, the following behaviors are disabled:
• The PHY is not reset on PE_RST# and PCIe resets (in-band and link drop). Other reset
events are not affected — Internal_Power_On_Reset, device disable, Force TCO, and PHY
reset by software.
• The PHY does not change its power state. As a result link speed does not change.
• The device does not initiate configuration of the PHY to avoid losing link.
1…7 0x0 Reserved
Bits
Bytes 31:24 23:16 15:08 07:00
00...15 NC-SI Header
16...19 Response Code Reason Code
20...23 Manufacturer ID (Intel 0x157)
24...25 0x20 0x00
Bits
Bytes 31:24 23:16 15:08 07:00
00...15 NC-SI Header
16...19 Manufacturer ID (Intel 0x157)
20...21 0x21 0x00
Bits
Bytes 31:24 23:16 15:08 07:00
00...15 NC-SI Header