Datasheet

Intel

Xeon Phi™ Coprocessor Datasheet Document ID Number: 328209 003EN

6.6.3.6.2 CPU Package Configuration Write

The CPU Package Config Write command allows the setting of power control data. For

the parameter byte formats, refer to the

Intel Xeon Processor Family External Design

Specification (EDS) Volume 1. Figure 2-36 in the EDS shows the format of the data

word to effect writing the limits and the time windows. The index referenced below can

be correlated to figure 2-36 as SMC-PL0 ==> RAPL-PL2 & SMC-PL1 ==> RAPL-PL1.

6.6.3.6.3 Set SM Signal

The Set SM Signal command gives you control of firmware signals. The primary use of

this command is to set the status LED into identify mode. In identify mode the status

LED flashes on for a short period twice every 2 seconds. This allows an administrator to

locate the card in a system that has multiple cards.

Table 6-10. CPU Package Config Write Request Format

Byte # Value Description

Command 0x43 • CPU Package Config Write

NetFn 0x2e • NETFN_INTEL

0-2 • Manufacturer ID (LSB format): 0x57, 0x01, 0x00

30x00•CPU Number

40x??•PCS Index

• 26 - Package Power Throttle Threshold Value 1 (PL1)

• 27 - Package Power Throttle Threshold Value 2 (PL0)

• All other values reserved

50x00•Parameter LSB

•

60x00•Parameter MSB

7 0x?? • Number of Bytes to Write

8[-11] 0x?? • Data bytes to write

Table 6-11. CPU Package Config Write Response Format

Byte # Value Description

00x??•Compcode

• 0x00 - Normal

• 0xc7 - Request Length Invalid

•0xcc - Invalid Field

•0xa1 - Wrong CPU Number

• 0xa6 - Wrong Write Length

• 0xab - Wrong Command Code

• 0xff - Unspecified Error

1-3 • Manufacturer ID (LSB format): 0x57, 0x01, 0x00

Table 6-12. Set SM Signal Request Format

Byte # Value Description

Command 0x15 • Set SM Signal

NetFn 0x30 • NETFN_INTEL_GENERAL_APP

00x??•Signal

•1 - Identify

• All other values reserved