Data Sheet

System Manageability—Ethernet Controller I210
653
Silicon Revision ID:
Vendor Specific ID: Four LSB bytes of the device Ethernet MAC address. The device Ethernet address is
taken from words LAN Base Address + Offsets 0x00-0x02 in the Flash.
10.5.4.5 Concurrent SMBus Transactions
The SMBus interface is single threaded. Thus, concurrent SMBus transactions are not permitted. Once a
transaction is started, it must be completed before additional transaction can be initiated.
A transaction is defined as:
• All SMBus commands used to receive a packet.
• All SMBus commands used to send a packet.
• The read and write SMBus commands used as part of read parameters described in
Section 10.5.9.2.
• The single write SMBus commands described in Section 10.5.9.1.
10.5.5 SMBus Notification Methods
The I210 supports three methods of notifying the MC that it has information that needs to be read by
the MC:
• SMBus alert - Refer to Section 10.5.5.1.
• Asynchronous notify - Refer to Section 10.5.5.2.
• Direct receive - refer to Section 10.5.5.3.
The notification method used by the I210 can be configured from the SMBus using the Receive Enable
command. The default method is set by the Flash in the Notification method field in LAN Receive Enable
1 (Section 6.7.2.18).
The following events cause the I210 to send a notification event to the MC:
• Receiving a LAN packet that is designated to the MC.
• The Firmware was reset and requires re-initialization.
• Receiving a Request Status command from the MC initiates a status response.
• The I210 is configured to notify the MC upon status changes (by setting the EN_STA bit in the
Receive Enable Command) and one of the following events happen:
— TCO Command Aborted
— Link Status changed
Silicon Version Revision ID
A0 000b
A1 001b
A2 011b
1 Byte 1 Byte 1 Byte 1 Byte
MAC Address, Byte 3 MAC Address, Byte 2 MAC Address, Byte 1 MAC Address, Byte 0
MSB LSB