Intel 807 AV8062701079702 Data Sheet

This chapter provides the processor electrical specifications including integrated

voltage regulator (VR), V

CC

 Voltage Identification (VID), reserved and unused signals,

signal groups, Test Access Points (TAP), and DC specifications.

A feature to the processor is the integration of platform voltage regulators into the

processor. Due to this integration, the processor has one main voltage rail (V

CC

) and a

voltage rail for the memory interface (V

DDQ

) , compared to six voltage rails on

previous processors. The V

CC

 voltage rail will supply the integrated voltage regulators

which in turn will regulate to the appropriate voltages for the cores, cache, system

agent, and graphics. This integration allows the processor to better control on-die

voltages to optimize between performance and power savings. The processor V

CC

 rail

will remain a VID-based voltage with a loadline similar to the core voltage rail (also

called V

CC

) in previous processors.

The processor has VCC, VDDQ, and VSS (ground) pins for on-chip power distribution.

All power pins must be connected to their respective processor power planes; all VSS

pins must be connected to the system ground plane. Use of multiple power and

ground planes is recommended to reduce I*R drop. The VCC pins must be supplied

with the voltage determined by the processor Serial Voltage IDentification (SVID)

on page 81 specifies the voltage level for the various VIDs.

The processor uses three signals for the serial voltage identification interface to

support automatic selection of voltages. The following table specifies the voltage level

corresponding to the 8-bit VID value transmitted over serial VID. A ‘1’ in this table

refers to a high voltage level and a ‘0’ refers to a low voltage level. If the voltage

regulation circuit cannot supply the voltage that is requested, the voltage regulator

must disable itself. VID signals are CMOS push/pull drivers. See the Voltage and

Current Specifications section for the DC specifications for these signals. The VID

codes will change due to temperature and/or current load changes to minimize the

power of the part. A voltage range is provided in the Voltage and Current

Specifications section. The specifications are set so that one voltage regulator can

operate with all supported frequencies.

Individual processor VID values may be set during manufacturing so that two devices

at the same core frequency may have different default VID settings. This is shown in

the VID range values in the Voltage and Current Specifications section. The processor

provides the ability to operate while transitioning to an adjacent VID and its

associated voltage. This will represent a DC shift in the loadline.

5th Generation Intel

®

 Core

™

 Processor Family, Intel

®

 Core

™

 M Processor Family, Mobile Intel

®

 Pentium

®

 Processor Family, and

Mobile Intel

®

 Celeron

®

 Processor Family

Datasheet – Volume 1 of 2

March 2015

80

Order No.: 330834-004v1