Data Sheet

System Manageability—Ethernet Controller I210
659
10.5.8.5 Get UDID (General and Directed)
The general get UDID SMBus transaction supports a constant command value of 0x03 and, if directed,
supports a Dynamic command value equal to the dynamic SMBus address.
If the SMBus address has been resolved (Address Resolved flag set to true), the manageability system
does not acknowledge (NACK) this transaction. If it’s a General command, the manageability system
always acknowledges (ACKs) as a directed transaction.
This command does not affect the status or validity of the dynamic SMBus address or the Address
Resolved flag.
8181811
Data 16 A Data 17 A PEC A P
UDID Byte 0 (LSB) 0 Assigned Address 0 [Data Dependent Value] 0
S
Slave
Address
Wr A Command A S   
1100 001 0 0 See Below 0
71181
Slave Address Rd A Byte Count A · · ·
1100 001 1 0 0001 0001 0
8 1818181
Data 1 A Data 2 A Data 3 A Data 4 A · · ·
UDID Byte 15 (MSB) 0 UDID Byte 14 0 UDID Byte 13 0 UDID Byte 12 0
81818181
Data 5 A Data 6 A Data 7 A Data 8 A · · ·
UDID Byte 11 0 UDID Byte 10 0 UDID Byte 9 0 UDID Byte 8 0
818181
Data 9 A Data 10 A Data 11 A · · ·
UDID Byte 7 0 UDID Byte 6 0 UDID Byte 5 0