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23542A/0-September 2000 Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet Table 12. Integer Instructions (continued) Instruction Mnemonic TEST mem16/32, imm16/32 VERR mreg16 VERR mem16 VERW mreg16 VERW mem16 WAIT WBINVD WRMSR XADD mreg8, reg8 XADD mem8, reg8 XADD mreg16/32, reg16/32 XADD mem16/32, reg16/32 XCHG reg8, mreg8 XCHG reg8, mem8 XCHG reg16/32, mreg16/32 XCHG reg16/32, mem16/32 XCHG EAX, EAX XCHG EAX, ECX XCHG EAX, EDX XCHG EAX, EBX XCHG EAX, ESP XCHG EAX, EBP XCHG EAX, ESI XCHG EAX, EDI XLAT XOR mreg8, reg8 XOR mem8, reg8 XOR mreg16/32, reg16/32 XOR mem16/32, reg16/32 XOR reg8, mreg8 XOR reg8, mem8 XOR reg16/32, mreg16/32 XOR reg16/32, mem16/32 XOR AL, imm8 XOR EAX, imm16/32 First Second Byte Byte F7h 0Fh 00h 0Fh 00h 0Fh 00h 0Fh 00h 9Bh 0Fh 09h 0Fh 30h 0Fh C0h 0Fh C0h 0Fh C1h 0Fh C1h 86h 86h 87h 87h 90h 91h 92h 93h 94h 95h 96h 97h D7h 30h 30h 31h 31h 32h 32h 33h 33h 34h 35h ModR/M Byte mm-000-xxx 11-100-xxx mm-100-xxx 11-101-xxx mm-101-xxx 11-100-xxx mm-100-xxx 11-101-xxx mm-101-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx Decode Type long vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector short long long long long long long long vector short long short long short short short short short short RISC86 Operations load, alu limm alu, alu, alu alu, alu, alu alu, alu, alu alu, alu, alu alu, alu, alu alu, alu, alu alu, alu, alu alux load, alux, store alu load, alu, store alux load, alux alu load, alu alux alu Chapter 3 Software Environment 81

Section	Page
IF YOU HAVE QUESTIONS, WE\	3
Contents	5
List of Figures	9
List of Tables	13
Revision History	17
About this Data Sheet	19
1 AMDK6™2E+ Embedded Processor	23
1.1 AMDK6™2E+ Embedded Processor Features	25
1.2 Process Technology	29
1.3 Super7™ Platform	30
2 Internal Architecture	33
2.1 Microarchitecture Overview	33
2.2 Cache, Instruction Prefetch, and Predecode Bits	38
2.3 Instruction Fetch and Decode	39
2.4 Centralized Scheduler	43
2.5 Execution Units	44
2.6 BranchPrediction Logic	47
3 Software Environment	49
3.1 Registers	49
3.2 ModelSpecific Registers (MSR)	66
3.3 Memory Management Registers	76
3.4 Paging	78
3.5 Descriptors and Gates	81
3.6 Exceptions and Interrupts	84
3.7 Instructions Supported by the AMDK6™2E+ Processor	85
4 Logic Symbol Diagram	113
5 Signal Descriptions	115
5.1 Signal Terminology	115
5.2 A20M# (Address Bit 20 Mask)	116
5.3 A[31:3] (Address Bus)	117
5.4 ADS# (Address Strobe)	118
5.5 ADSC# (Address Strobe Copy)	118
5.6 AHOLD (Address Hold)	119
5.7 AP (Address Parity)	120
5.8 APCHK# (Address Parity Check)	121
5.9 BE[7:0]# (Byte Enables)	122
5.10 BF[2:0] (Bus Frequency)	123
5.11 BOFF# (Backoff)	124
5.12 BRDY# (Burst Ready)	125
5.13 BRDYC# (Burst Ready Copy)	126
5.14 BREQ (Bus Request)	126
5.15 CACHE# (Cacheable Access)	127
5.16 CLK (Clock)	127
5.17 D/C# (Data/Code)	128
5.18 D[63:0] (Data Bus)	129
5.19 DP[7:0] (Data Parity)	130
5.20 EADS# (External Address Strobe)	131
5.21 EWBE# (External Write Buffer Empty)	132
5.22 FERR# (FloatingPoint Error)	133
5.23 FLUSH# (Cache Flush)	134
5.24 HIT# (Inquire Cycle Hit)	135
5.25 HITM# (Inquire Cycle Hit To Modified Line)	135
5.26 HLDA (Hold Acknowledge)	136
5.27 HOLD (Bus Hold Request)	137
5.28 IGNNE# (Ignore Numeric Exception)	138
5.29 INIT (Initialization)	139
5.30 INTR (Maskable Interrupt)	140
5.31 INV (Invalidation Request)	140
5.32 KEN# (Cache Enable)	141
5.33 LOCK# (Bus Lock)	142
5.34 M/IO# (Memory or I/O)	143
5.35 NA# (Next Address)	144
5.36 NMI (NonMaskable Interrupt)	145
5.37 PCD (Page Cache Disable)	146
5.38 PCHK# (Parity Check)	147
5.39 PWT (Page Writethrough)	148
5.40 RESET (Reset)	149
5.41 RSVD (Reserved)	150
5.42 SCYC (Split Cycle)	151
5.43 SMI# (System Management Interrupt)	152
5.44 SMIACT# (System Management Interrupt Active)	153
5.45 STPCLK# (Stop Clock)	154
5.46 TCK (Test Clock)	155
5.47 TDI (Test Data Input)	155
5.48 TDO (Test Data Output)	155
5.49 TMS (Test Mode Select)	156
5.50 TRST# (Test Reset)	156
5.51 VCC2DET (VCC2 Detect)	157
5.52 VCC2H/L# (VCC2 High/Low)	158
5.53 VID[4:0] (Voltage Identification)	159
5.54 W/R# (Write/Read)	160
5.55 WB/WT# (Writeback or Writethrough)	161
5.56 Pin Tables by Type	162
5.57 Bus Cycle Definitions	164
6 AMD PowerNow!™ Technology	165
6.1 Enhanced Power Management Features	165
6.2 Dynamic Core Frequency and Core Voltage Control	172
7 Bus Cycles	175
7.1 Timing Diagrams	175
7.2 Bus States	177
7.3 Memory Reads and Writes	180
7.4 I/O Read and Write	188
7.5 Inquire and Bus Arbitration Cycles	190
7.6 Special Bus Cycles	212
8 Poweron Configuration and Initialization	221
8.1 Signals Sampled During the Falling Transition of RESET	221
8.2 RESET Requirements	222
8.3 State of Processor After RESET	222
8.4 State of Processor After INIT	225
9 Cache Organization	227
9.1 MESI States in the L1 Data Cache and L2 Cache	229
9.2 Predecode Bits	230
9.3 Cache Operation	230
9.4 Cache Disabling and Flushing	233
9.5 L2 Cache Testing	235
9.6 CacheLine Fills	235
9.7 CacheLine Replacements	236
9.8 Write Allocate	237
9.9 Prefetching	242
9.10 Cache States	243
9.11 Cache Coherency	244
9.12 Writethrough and Writeback Coherency States	249
9.13 A20M# Masking of Cache Accesses	249
10 Write Merge Buffer	251
10.1 EWBE# Control	251
10.2 Memory Type Range Registers	253
10.3 Memory-Range Restrictions	255
10.4 Examples	257
11 FloatingPoint and Multimedia Execution Units	259
11.1 FloatingPoint Execution Unit	259
11.2 Multimedia and 3DNow!™ Execution Units	261
11.3 FloatingPoint and MMX™/3DNow!™ Instruction Compatibility	262
12 System Management Mode (SMM)	263
12.1 SMM Operating Mode and Default Register Values	263
12.2 SMM StateSave Area	265
12.3 SMM Revision Identifier	267
12.4 SMM Base Address	268
12.5 Halt Restart Slot	268
12.6 I/O Trap Doubleword	269
12.7 I/O Trap Restart Slot	270
12.8 Exceptions, Interrupts, and Debug in SMM	272
13 Test and Debug	273
13.1 BuiltIn SelfTest (BIST)	273
13.2 ThreeState Test Mode	274
13.3 BoundaryScan Test Access Port (TAP)	275
13.4 Cache Inhibit	285
13.5 L2 Cache and Tag Array Testing	286
13.6 Debug	290
14 Clock Control	297
14.1 Clock Control States	297
14.2 Halt State	300
14.3 Stop Grant State	300
14.4 Stop Grant Inquire State	302
14.5 EPM Stop Grant State	303
14.6 Stop Clock State	305
15 Electrical Data	307
15.1 Operating Ranges	308
15.2 Absolute Ratings	309
15.3 DC Characteristics	309
15.4 Power Dissipation	311
15.5 Power and Grounding	313
16 Signal Switching Characteristics	317
16.1 CLK Switching Characteristics	318
16.2 Clock Switching Characteristics for 100MHz Bus Operation	318
16.3 Clock Switching Characteristics for 66MHz Bus Operation	319
16.4 Valid Delay, Float, Setup, and Hold Timings	320
16.5 Output Delay Timings for 100MHz Bus Operation	320
16.6 Input Setup and Hold Timings for 100MHz Bus Operation	322
16.7 Output Delay Timings for 66MHz Bus Operation	324
16.8 Input Setup and Hold Timings for 66MHz Bus Operation	326
16.9 RESET and Test Signal Timing	328
16.10 Timing Diagrams	331
17 Thermal Design	335
17.1 Package Thermal Specifications	335
17.2 Measuring Case Temperature	339
17.3 Layout and Airflow Considerations	339
18 Pin Designations	343
18.1 Pins Designations for CPGA Package	344
18.2 Pins Designations for OBGA Package	348
19 Package Specifications	353
19.1 321Pin Staggered CPGA Package Specification	353
19.2 349Ball OBGA Package Specification	354
20 Ordering Information	355

Match case Limit results 1 per page

Chapter 3

Software Environment

23542A/0—September 2000

AMD-K6™-2E+ Embedded Processor Data Sheet

Preliminary Information

TEST mem16/32, imm16/32

F7h

mm-000-xxx

long

load, alu

VERR mreg16

0Fh

00h

11-100-xxx

vector

VERR mem16

0Fh

00h

mm-100-xxx

vector

VERW mreg16

0Fh

00h

11-101-xxx

vector

VERW mem16

0Fh

00h

mm-101-xxx

vector

WAIT

9Bh

vector

WBINVD

0Fh

09h

vector

WRMSR

0Fh

30h

vector

XADD mreg8, reg8

0Fh

C0h

11-100-xxx

vector

XADD mem8, reg8

0Fh

C0h

mm-100-xxx

vector

XADD mreg16/32, reg16/32

0Fh

C1h

11-101-xxx

vector

XADD mem16/32, reg16/32

0Fh

C1h

mm-101-xxx

vector

XCHG reg8, mreg8

86h

11-xxx-xxx

vector

XCHG reg8, mem8

86h

mm-xxx-xxx

vector

XCHG reg16/32, mreg16/32

87h

11-xxx-xxx

vector

XCHG reg16/32, mem16/32

87h

mm-xxx-xxx

vector

XCHG EAX, EAX

90h

short

limm

XCHG EAX, ECX

91h

long

alu, alu, alu

XCHG EAX, EDX

92h

long

alu, alu, alu

XCHG EAX, EBX

93h

long

alu, alu, alu

XCHG EAX, ESP

94h

long

alu, alu, alu

XCHG EAX, EBP

95h

long

alu, alu, alu

XCHG EAX, ESI

96h

long

alu, alu, alu

XCHG EAX, EDI

97h

long

alu, alu, alu

XLAT

D7h

vector

XOR mreg8, reg8

30h

11-xxx-xxx

short

alux

XOR mem8, reg8

30h

mm-xxx-xxx

long

load, alux, store

XOR mreg16/32, reg16/32

31h

11-xxx-xxx

short

alu

XOR mem16/32, reg16/32

31h

mm-xxx-xxx

long

load, alu, store

XOR reg8, mreg8

32h

11-xxx-xxx

short

alux

XOR reg8, mem8

32h

mm-xxx-xxx

short

load, alux

XOR reg16/32, mreg16/32

33h

11-xxx-xxx

short

alu

XOR reg16/32, mem16/32

33h

mm-xxx-xxx

short

load, alu

XOR AL, imm8

34h

short

alux

XOR EAX, imm16/32

35h

short

alu

Table 12.

Integer Instructions (continued)

Instruction Mnemonic

First

Byte

Second

Byte

ModR/M

Byte

Decode

Type

RISC86

Operations