AMD-K6-IIIE+550ACR AMD (ADVANCED MICRO DEVICES), AMD-K6-IIIE+550ACR Datasheet - Page 172
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
Not Compliant
- Current page: 172 of 370
- Download datasheet (6Mb)
AMD-K6™-IIIE+ Embedded Processor Data Sheet
6.2
Effective Bus
Frequency Divisor
(EBF[2:0])
150
Dynamic Core Frequency and Core Voltage Control
AMD PowerNow! technology-enabled processors support the
ability to change the bus frequency divisor and core voltage
transparently to the user during run-time. These features are
implemented in conjunction with a new clock control state—
For AMD PowerNow! technology state transitions, the EPMR
register is accessed using an SMM handler.
See “Clock Control” on page 277 for more information about
the EPM Stop Grant State.
The processor core frequency is controlled by the Effective Bus
Frequency Divisor—EBF[2:0]—which dictates the processor-to-
bus clock ratio supplied to the processor’s internal PLL. This
processor-to-bus clock ratio is multiplied by the external bus
frequency to set the frequency of operation for the processor
core.
Table 28 on page 149 lists valid EBF[2:0] states and equivalent
processor-to-bus clock ratios.
the EPM Stop Grant state.
The SMM handler initiates core voltage and frequency
transitions by writing a non-zero value to the Stop Grant
Time-Out Counter (SGTC) field.
This action automatically places the processor into the EPM
Stop Grant State and transitions the CPU core voltage and
frequency to the values specified in the Voltage ID Output
(VIDO) and Internal BF Divisor (IBF) fields of the BVC field.
Once the timer of the SGTC has expired, the EPM Stop
Grant State is exited and the AMD PowerNow! technology
state transition is completed.
At the fall of RESET, the EBF[2:0] value is determined by
the state of the processor BF[2:0] input pins.
Afterwards, the EBF[2:0] value can be dynamically
controlled through AMD PowerNow! technology state
transitions.
AMD PowerNow!™ Technology
Preliminary Information
23543A/0—September 2000
Chapter 6
Related parts for AMD-K6-IIIE+550ACR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
AMD-751ACAMD-751-TM System Controller Revision Guide
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
AMD-751AMD-751-TM System Controller Revision Guide
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
AMD-X5-133SFZAm5X86? Microprocessor Family
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Hyper Transport PCI-X Tunnel
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
HyperTransport I/O Hub
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
System Controller
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
AMD-K6 Processor
Manufacturer:
AMD [Advanced Micro Devices]
Datasheet:
Part Number:
Description:
AMD-K6-2E Embedded Processor
Manufacturer:
AMD [Advanced Micro Devices]
Datasheet:
Part Number:
Description:
Manufacturer:
AMD (ADVANCED MICRO DEVICES)
Datasheet:
Part Number:
Description:
Peripheral Bus Controller
Manufacturer:
AMD [Advanced Micro Devices]
Datasheet:
Part Number:
Description:
Am5X86 Microprocessor Family
Manufacturer:
AMD [Advanced Micro Devices]
Datasheet: