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Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

402

Order Number: 330061-002US

Slave Address

(Command 

Phase)

Write Address

SMBus 

Command

0x4B

BMC

SMBus Read 

Command 

Code

SMBus Read 

Code

0x40

Slave Address 

(Data Phase)

Read Address

0x4B

Byte Count

N

Control Data

{0x01,

0x02,

0x03}

SoC

N = 0x01 for Busy state

• Byte 1 = 0x01

N= 0x02 for Transaction 

Errors 

• Byte 1 = 0x02
• Byte 2 =Error Code 

defined in 

N={0x03} indicates 

successful PECI Transaction

• Byte 1 = 0x00
• Byte 2= 0x00
• Byte3 = PECI Completion 

Code

Byte 1

Status Byte

CMD_STAT

See Byte[1] of defined in 

Byte 2

Error Byte

ERR_CODE

See Byte[2] of defined in 

Byte 3

PECI Transaction 

Status

PECI 

Response 

Data

PECI 

Completion 

Code

Completion Code decode:

• 0x40 = Command 

successful

• 0x80 = Response time-

out

• 0x90 = Illegal command