AMD-K6-IIIE+550ACR AMD (ADVANCED MICRO DEVICES), AMD-K6-IIIE+550ACR Datasheet - Page 165
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AMD-K6-IIIE+550ACR
Manufacturer Part Number
AMD-K6-IIIE+550ACR
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.AMD-K6-IIIE550ACR.pdf
(370 pages)
Specifications of AMD-K6-IIIE+550ACR
Lead Free Status / RoHS Status
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23543A/0—September 2000
6
6.1
Chapter 6
AMD PowerNow!™ Technology
Enhanced Power Management Features
The AMD PowerNow!™ technology is an advanced second-
generation power management feature that reduces the overall
power consumed by the processor through control of voltage
and frequency. This power saving technology is designed to be
dynamic and flexible by enabling instant “on-the-fly” and
independent control of both the processor’s core voltage and
frequency.
AMD PowerNow! technology can be used in conjunction with
the existing power management schemes in an embedded
system to provide a better combination of performance and
power savings than previously possible.
AMD PowerNow! technology-enabled processors include two
new f eat ure s spe cifically designed to enhanc e powe r
management functionality:
These enhanced power management features are accessed and
controlled through an I/O block and two registers:
The EPMR and PSOR registers and the I/O block are defined in
this section, followed by a discussion of how to implement and
use the AMD PowerNow! technology features (see “Dynamic
Core Frequency and Core Voltage Control” on page 150). The
Embedded AMD-K6™ Processors BIOS Design Guide Application
Note, order# 23913, contains additional information.
Dynamic core frequency control
Dynamic core voltage control
An aligned 16-byte block of I/O address space is defined by
the Enhanced Power Management Register (EPMR).
The Enhanced Power Management Register (EPMR) is
supported on low-power versions of the processor only.
The Processor State Observability Register (PSOR) is
defined differently on the low-power versions of the
AMD-K6-IIIE+ processor to support AMD PowerNow!
technology features.
AMD PowerNow!™ Technology
AMD-K6™-IIIE+ Embedded Processor Data Sheet
143
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