Intel C2518 FH8065501516710 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

406

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

{0x1,
0x02,
0x04,
0x05,

0x07}

SoC

N = 0x01 for Busy state

• Byte 1 = 0x01

N= 0x02 for Transaction 

Errors 

• Byte 1 = 0x02
• Byte 2 =Error Code 

defined in 

N={0x4,0x5,0x7} indicates 

successful PECI Transaction

• Byte 1 = 0x00
• Byte 2= 0x00
• Byte[7:3] = PECI 

Response Data

N = {0x04, 0x05, 0x07} 

value is determined by the 

number of PECI Response 

Data bytes returned in 

Byte[7:4] on the SMBus.
N Value:

• 0x04 = 1 data byte
• 0x05 = 2 data bytes
• 0x07 = 4 data bytes

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

Byte 4

Data 1 (LSB)

Data = 1, 2, 

or 4 bytes

See later section.

Byte 5

Data 2

Byte 6

Data 3

Byte 7

Data 4 (MSB)