AMD-K6-IIIE+550ACR AMD (ADVANCED MICRO DEVICES), AMD-K6-IIIE+550ACR Datasheet - Page 168

• Manufacturer Part Number: AMD-K6-IIIE+550ACR
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AMD-K6-IIIE+550ACR

• Lead Free Status / RoHS Status: Not Compliant

AMD-K6™-IIIE+ Embedded Processor Data Sheet
EPM 16-Byte I/O
Block
Figure 55. EPM 16-Byte I/O Block
Table 26. EPM 16-Byte I/O Block Definition
Notes:
1. All bits default to 0 when RESET is asserted.
146
Byte
15-12
11-8
7-0
Symbol Description
15
BVC
Description
Reserved
Bus Divisor and Voltage ID Control (BVC)
Reserved
Bus Divisor and Voltage ID Control
Reserved
The EPM 16-byte I/O block contains one 4-byte field—Bus
D iv iso r a n d Vol ta ge I D Co n t rol (B V C) — for e n abl in g,
controlling, and monitoring the enhanced power management
features (see Figure 55). Table 26 defines the function of the
BVC field within the EPM 16-byte I/O block mapped by the
EPMR.
BVC. Figure 56 on page 147 shows the format, and Table 27 on
page 147 defines the function of each bit of the BVC field
located within the EPM 16-byte I/O block.
12
11
AMD PowerNow!™ Technology
11-8
Bytes
Preliminary Information
BVC
R/W Function
R/W
R
R
All reserved bits are always read as 0.
The bit fields within the BVC bytes allow software to change the
processor bus divisor and core voltage.
All reserved bits are always read as 0.
8
7
1
23543A/0—September 2000
Chapter 6
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