AMD-K6-2ESLASH400AMZ datasheet(5/332 Pages) AMD

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Contents

22529B/0—January 2000

AMD-K6™-2E Processor Data Sheet

Preliminary Information

Contents

Revision History.......................................................................... xv

About this Data Sheet...............................................................xvii

Overview ................................................................................. xvii

AMD-K6™-2E Processor .............................................................. 1

1.1

AMD-K6™-2E Embedded Processor Features ......................... 2

1.2

Process Technology..................................................................... 4

1.3

Super7™ Platform Initiative ..................................................... 4

Internal Architecture .................................................................. 7

2.1

AMD-K6™-2E Processor Microarchitecture Overview ........... 7

2.2

Cache, Instruction Prefetch, and Predecode Bits.................. 12

2.3

Instruction Fetch and Decode ................................................. 13

2.4

Centralized Scheduler .............................................................. 17

2.5

Execution Units......................................................................... 18

2.6

Branch-Prediction Logic........................................................... 20

Software Environment ............................................................... 23

3.1

Registers .................................................................................... 23

3.2

Model-Specific Registers (MSR) ............................................. 40

3.3

Memory Management Registers.............................................. 47

3.4

Paging......................................................................................... 49

3.5

Descriptors and Gates .............................................................. 52

3.6

Exceptions and Interrupts ....................................................... 55

3.7

Instructions Supported by the AMD-K6™-2E Processor ...... 56

Logic Symbol Diagram ............................................................... 83

Signal Descriptions .................................................................... 85

5.1

Signal Terminology................................................................... 85

5.2

A20M# (Address Bit 20 Mask) ................................................. 86

5.3

A[31:3] (Address Bus)............................................................... 87

5.4

ADS# (Address Strobe) ............................................................ 88

5.5

ADSC# (Address Strobe Copy) ................................................ 88

5.6

AHOLD (Address Hold) ........................................................... 89

5.7

AP (Address Parity).................................................................. 90

5.8

APCHK# (Address Parity Check)............................................ 91

5.9

BE[7:0]# (Byte Enables) ........................................................... 92

5.10

BF[2:0] (Bus Frequency) .......................................................... 93

5.11

BOFF# (Backoff) ....................................................................... 94

5.12

BRDY# (Burst Ready)............................................................... 95

5.13

BRDYC# (Burst Ready Copy) .................................................. 96

5.14

BREQ (Bus Request)................................................................. 96

5.15

CACHE# (Cacheable Access) .................................................. 97

5.16

CLK (Clock) ............................................................................... 97

5.17

D/C# (Data/Code) ...................................................................... 98

5.18

D[63:0] (Data Bus)..................................................................... 99

5.19

DP[7:0] (Data Parity).............................................................. 100

5.20

EADS# (External Address Strobe)........................................ 101

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