13th Generation Intel® Core™ Processors

Datasheet, Volume 1 of 2
Supporting 13th Generation Intel® Core™ Processor for S Processor Line Platforms, formerly known as Raptor Lake

ID 743844
Date 10/13/2022

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Document Table of Contents

CPUID

CPUID Format

SKU Stepping CPUID Reserved [31:28] Extended Family [27:20] Extended Model [19:16] Reserved [15:14] Processor Type [13:12] Family Code [11:8] Model Number [7:4] Stepping ID [3:0]
S 8P+16E B-0 0xB0671 Reserved 0000000b 1011b Reserved 00b 0110b 0111b 0001b
Notes:
  • The Extended Family, Bits [27:20] are used in conjunction with the Family Code, specified in Bits[11:8], to indicate whether the processor belongs to Intel® Core™ processor family.
  • The Extended Model, Bits [19:16] in conjunction with the Model Number, specified in Bits [7:4], are used to identify the model of the processor within the processor's family.
  • The Family Code corresponds to Bits [11:8] of the EDX register after RESET, Bits [11:8] of the EAX register after the CPUID instruction is executed with a 1 in the EAX register, and the generation field of the Device ID register accessible through Boundary Scan.
  • The Model Number corresponds to Bits [7:4] of the EDX register after RESET, Bits [7:4] of the EAX register after the CPUID instruction is executed with a 1 in the EAX register, and the model field of the Device ID register accessible through Boundary Scan.
  • The Stepping ID in Bits [3:0] indicates the revision number of that model.
  • When EAX is initialized to a value of '1', the CPUID instruction returns the Extended Family, Extended Model, Processor Type, Family Code, Model Number and Stepping ID value in the EAX register. Note that the EDX processor signature value after reset is equivalent to the processor signature output value in the EAX register.

Cache and TLB descriptor parameters are provided in the EAX, EBX, ECX and EDX registers after the CPUID instruction is executed with a 2 in the EAX register.