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AMD-K5 Processor Data Sheet 18522F/0—Jan1997
PRELIMINARY INFORMATION
2 Block Diagram
Fetch
Decode
Load
Store
Execute
8 Ports
64
Result
Retire
Fastpath Hardware ROPs
M Code Microcode ROPs
R.S. Reservation Station
Port 41 bits
Address
Data
32
8 Ports
4 Ports
5 Ports
2 Ports
Load
Store
Prefetch & Predecode
Branch Prediction
Instruction
Cache
Linear Tags
Byte
Queue
Fast
Path
M
Code
Fast
Path
M
Code
Fast
Path
M
Code
Fast
Path
M
Code
R.S.
R.S.
ALU
R.S.
ALU
R.S.
Branch
R.S.
FPU
Load
Store
Load
Store
Reorder Buffer
(ROB)
Register File
(x86 GPRs, FPRs)
Memory Management Unit
(TLBs and Physical Tags)
Bus Interface Unit
Data
Cache
Linear Tags
Store
Buffer
4 Ports
- Data Sheet 1
- Trademarks: 2
- Contents 3
- 10.4 RESET, TCK, TRST 6
- List of Figures 7
- List of Tables 9
- 18522F/0—Jan1997 10
- PRELIMINARY INFORMATION 10
- 1 AMD-K5™ Processor Features 11
- 1.2 High-Performance Design 12
- 1.3 Compatibility 12
- Revision History 13
- 2 Block Diagram 14
- 3 Ordering Information 15
- 4 Architectural Introduction 16
- 4.3 Register Renaming 17
- 4.6 Cache Architecture 18
- 4.7 Branch Prediction 19
- 4.9 Reorder Buffer 20
- 4.10 Register File 21
- 5 CPU Identification 22
- 6 Logic Symbol Diagram 23
- 7 Signal Descriptions 24
- AMD-K5 Processor Data Sheet 35
- Table 2. Output Pins 35
- Table 3. Input/Output Pins 36
- Table 4. Test Pins 36
- Table 5. Bus Cycle Definition 36
- Table 6. Special Cycles 37
- 8 Processor Operation 38
- 8.3 Cache Protocol 41
- 8.4 Data Cache Coherency 42
- 8.5 External Bus Description 46
- 8.6 Bus Cycles 48
- 8.7 System Management Mode 61
- Table 12. SMM Save Area Map 62
- 8.8 Am486 64
- 9 Electrical Data 66
- 9.2 Absolute Maximum Ratings 67
- 9.3 Operating Ranges 67
- 10 Switching Characteristics 69
- 10.2 60-MHz Bus Operation 72
- 10.3 50-MHz Bus Operation 74
- Figure 15. Diagrams Key 78
- Figure 16. CLK Waveform 78
- Figure 21. TCK Waveform 81
- Figure 22. TRST Timing 81
- 11 Timing Diagrams 82
- Figure 39. Special Cycle 89
- Start blank 90
- 13 Physical Dimensions 94
- 15 Pin Designations (Model 0) 96
- Functional Grouping 98
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