Data Sheet
System Manageability—Ethernet Controller I210
673
The I210 response to one of the commands (0xC0 or 0xD0) in a given time as defined in the
SMBus Notification Timeout and Flags word in the Flash.
This command can also be executed using the I2C quick read format as follow:
Table 10-21 lists the status data byte 1 parameters.
Status data byte 2 is used by the MC to indicate whether the LAN device driver is alive and running.
The LAN device driver valid indication is a bit set by the LAN device driver during initialization; the bit is
cleared when the LAN device driver enters a Dx state or is cleared by the hardware on a PCI reset.
Function Command
Read Status 0XC0 or 0XD0 or 0XDE
Function Byte Count
Data 1
(Op-Code)
Data 2
(Status
Data 1)
Data 3
(Status Data 2)
Receive TCO Partial Status 3 0XDD See Below
171
1 8181811
Start Slave Address Rd
Ack Byte Count Ack Status Data 1 Ack Status Data 2 Ack Stop
1
0 0000 0002 0 0 1
Table 10-21. Status Data Byte 1
Bit Name Description
7 Reserved Always zero (indicates port number LSB in multi port devices)
6 TCO Command Aborted
1b = A TCO command abort event occurred since the last read status cycle.
0b = A TCO command abort event did not occur since the last read status cycle.
5 Link Status Indication
0b = LAN link down.
1b = LAN link up.
4 PHY Link Forced Up
Contains the value of the PHY_Link_Up bit. When set, indicates that the PHY link is
configured to keep the link up.
3 Initialization Indication
0b = An Flash reload event has not occurred since the last Read Status cycle.
1b = An Flash reload event has occurred since the last Read Status cycle
1
.
1. This indication is asserted when the I210 manageability block reloads the Flash and its internal database is updated to the Flash
default values. This is an indication that the external MC should reconfigure the I210, if other values other than the Flash default
should be configured.
2 Reserved Always zero (indicates port number MSB in multi port devices)
1:0 Power State
00b = Dr state.
01b = D0u state.
10b = D0 state.
11b = D3 state.