Intel BX80638I53320M Identification Information

14 Specification Update
Identification Information
Component Identification using Programming Interface
The processor stepping can be identified by the following register contents:
Notes:
1. The Extended Family , bits [27:20] are used in conjunction with the Fa mily Code, specified in bits [11:8],
to indicate whether the processor belongs to the Intel386, Intel486, Pentium, Pentium Pro, Pentium 4,
or Intel® Core™ processor family.
2. 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.
3. The Processor Type, specified in bits [13:12] indicates whether the processor is an original OEM
processor, an OverDrive processor, or a dual processor (capable of being used in a dual processor
system).
4. 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.
5. 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.
6. The Stepping ID in bits [3:0] indicates the revision number of tha t model. See Ta bl e 1 for the proce ssor
stepping ID number in the CPUID information.
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.
The processor can be identified by the following register contents:
Notes:
1. The Vendor ID corresponds to bits 15:0 of the Vendor ID Register located at offset 00h–01h in the PCI
function 0 configuration space.
2. The Host Device ID corresponds to bits 15:0 of the Device ID Register located at Device 0 offset 02h–
03h in the PCI function 0 configuration space.
3. The Processor Graphics Device ID (DID2) corresponds to bits 15:0 of the Device ID Register located at
Device 2 offset 02h–03h in the PCI function 0 configuration space.
4. The Revision Number corresponds to bits 7:0 of the Revision ID Regist er loca ted at of fset 08h in the P CI
function 0 configuration space.
Reserved Extended
Family1Extended
Model2Reserved Processor Type3Family Code4Model Number5Stepping ID6
31:28 27:20 19:16 15:14 13:12 11:8 7:4 3:0
00000000b 0011b 00b 0110 1010b xxxxb
Stepping Vendor ID1Host Device ID2Processor Graphics
Device ID3Revision ID4
E-1 8086h 0154h 0166h 09h
L-1 8086h 0154h 0166h 09h