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Texas Instruments TMS320C67X/C67X+ DSP manuali

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Texas instruments TMS320C67X/C67X+ DSP Manuale Utente (465 pagine)


Marchio: Texas-instruments | Categoria: no | Dimensione: 1.81 MB |

 

Indice

TMS320C67x/C67x+ DSP

1

CPU and Instruction Set

1

Reference Guide

1

Read This First

3

Trademarks

4

Contents

10

Examples

17

CPU Data Paths and Control

27

2.1 Introduction

28

Data path A

29

Data path B

29

2.4 Register File Cross Paths

32

2.6 Data Address Paths

33

2.7 Control Register File

33

Control Register File

45

Field Descriptions

50

Instruction Set

61

3-9Instruction SetSPRU733

69

(e−1023)

73

3.4 Delay Slots

74

3.5 Parallel Operations

76

3.5.1 Example Parallel Code

78

3.6 Conditional Operations

79

3.7 Resource Constraints

80

Resource Constraints

81

3-21Instruction SetSPRU733

81

Instruction Set3-22 SPRU733

82

3-23Instruction SetSPRU733

83

Instruction Set3-24 SPRU733

84

3-25Instruction SetSPRU733

85

Instruction Set3-26 SPRU733

86

3-27Instruction SetSPRU733

87

Instruction Set3-28 SPRU733

88

3.8 Addressing Modes

90

Addressing Modes

91

3-31Instruction SetSPRU733

91

LDW .D1 *++A4[9],A1

91

Instruction Set3-32 SPRU733

92

ADDAH .D1 A4,A1,A4

92

3.9 Instruction Compatibility

94

3.10 Instruction Descriptions

94

3-35 Instruction SetSPRU733

95

3-37 Instruction SetSPRU733

97

3 1 5 5 1 1 1

100

3 1 5 5 5 1 7 1 1

104

3 1 5 5 5 6 1 1

106

31 29 28 27 23 22 76543210

119

3 1 5 16 1 1

119

3 1 5 5 5 1 1 1

125

Bitwise AND

127

AND Bitwise AND

128

Branch Using a Displacement

129

B Branch Using a Displacement

130

Branch Using a Register

131

B Branch Using a Register

132

3-73 Instruction SetSPRU733

133

Instruction Type Branch

134

Delay Slots 5

134

Pipeline

134

3-75 Instruction SetSPRU733

135

Clear a Bit Field

137

CLR Clear a Bit Field

138

Example 1 CLR .S1 A1,4,19,A2

139

Example 2 CLR .S2 B1,B3,B2

139

.unit = .L1 or .L2

146

> src2) 1 → dst

147

Example 1 CMPGT .L1X A1,B1,A2

148

Example 2 CMPGT .L1X A1,B1,A2

148

Example 3 CMPGT .L1 8,A1,A2

148

Example 4 CMPGT .L1X A1,B1,A2

148

Unsigned 32-bit integer

154

< src2) 1 → dst

156

Example 1 CMPLT .L1 A1,A2,A3

157

Example 2 CMPLT .L1 A1,A2,A3

157

Example 3 CMPLT .L1 9,A1,A2

157

Floating-Point Value

166

With Truncation

168

3 1 5 5 5 5 1 1

170

Instruction Type Single-cycle

172

Delay Slots 0

172

See Also EXTU

172

Example 1 EXT .S1 A1,10,19,A2

172

Example 2 EXT .S1 A1,A2,A3

172

See Also EXT

175

Example 2 EXTU .S1 A1,A2,A3

175

Example INTDPU .L1 A4,A1:A0

180

Register Offset

183

Example LDB .D1 *−A5[4],A7

185

3 1 5 15 1 3 1 1

186

3 1 5 5 5 4 1 1 1

188

3 1 5 5 5 4 1 3 1 1

191

Example LDH .D1 *++A4[A1],A8

193

Example 1 LDW .D1 *A10,B1

198

Example 2 LDW .D1 *A4++[1],A6

198

Example 3 LDW .D1 *++A4[1],A6

198

3-139 Instruction SetSPRU733

199

Instruction Type Load

200

Delay Slots 4

200

See Also LDB, LDH

200

Leftmost Bit Detection

201

LMBD Leftmost Bit Detection

202

 Signed 16 LSB

203

Example 1 MPY .M1 A1,A2,A3

204

Example 2 MPY .M1 13,A1,A2

204

 Signed 16 MSB

207

Example MPYH .M1 A1,A2,A3

208

Example MPYHL .M1 A1,A2,A3

210

 Unsigned 16 LSB

211

 Unsigned 16 MSB

213

 32-Bit Into 32-Bit Result

217

Functional Unit

218

See Also MPYID

218

 32-Bit Into 64-Bit Result

219

See Also MPYI

220

Example MPYLH .M1 A1,A2,A3

222

 Double-Precision

228

Double-Precision Result

230

MPYSP2DP

230

See Also MPY, MPYU, MPYUS

233

Example MPYU .M1 A1,A2,A3

235

Example MPYUS .M1 A1,A2,A3

237

Syntax MV (.unit) src2, dst

238

Opcode .L unit

238

Opcode .S unit

238

3 1 5 5 1 1

239

3 1 5 5 1 6 1 1

240

MVK .S1 0x00008000X, A0

243

MVK .S1 0xFFFF8000, A0

243

Instruction Type Single cycle

244

See Also MVKH, MVKL, MVKLH

244

Example 1

244

Example 2 MVK .D2 14,B8

244

MVKH/MVKLH

245

MVKL 0x12345678

246

MVKH 0x12345678

246

MVKL label

246

MVKH label

246

31 29 28 27 23 22 7 6543210

247

3 1 5 5 1 7 1 1

249

NOP No Operation

250

No Operation

250

Example 1 NOP

251

Example 2 MVK .S1 1,A1

251

NORM Normalize Integer

252

Normalize Integer

252

NOT Bitwise NOT

254

Bitwise NOT

254

Bitwise OR

255

OR Bitwise OR

256

3-207 Instruction SetSPRU733

267

SADD .L1X B2,A5:A4,A7:A6

267

2 cycles after instruction

267

SET Set a Bit Field

270

Set a Bit Field

270

Arithmetic Shift Left

273

SHL Arithmetic Shift Left

274

Arithmetic Shift Right

275

SHR Arithmetic Shift Right

276

Logical Shift Right

277

SHRU Logical Shift Right

278

 src2) << 1) → dst

279

Example SMPY .M1 A1,A2,A3

280

Example SMPYHL .M1 A1,A2,A3

283

Example SMPYLH .M1 A1,A2,A3

285

Shift Left With Saturation

292

02E3 031Ch

293

Written baseR

297

31 29 28 27 23 22 876 43210

298

3 1 5 15 1 1 1

298

3-243 Instruction SetSPRU733

303

/B15, src

304

Instruction Type Store

304

See Also STB, STW

304

3-247 Instruction SetSPRU733

307

See Also STB, STH

308

3 1 5 5 5 1 6 1 1

310

Example SUBAW .D1 A5,2,A3

317

<< 1) + 1 → dst

318

<< 1 → dst

318

Example 1 SUBC .L1 A0,A1,A0

319

Example 2 SUBC .L1 A0,A1,A0

319

XOR Bitwise Exclusive OR

330

Bitwise Exclusive OR

330

ZERO Zero a Register

332

Zero a Register

332

Figure 4−1. Pipeline Stages

334

4.1.1 Fetch

334

4.1.2 Decode

335

4.1.3 Execute

337

Figure 4−5. Pipeline Phases

338

4.2.3 Store Instructions

350

Written baseR dst

352

LDW .D1 *A4++,A3

353

4.2.5 Branch Instructions

354

4.2.7 Four-Cycle Instructions

357

4.2.8 INTDP Instruction

358

4.2.9 DP Compare Instructions

359

4.2.11 MPYI Instruction

361

4.2.12 MPYID Instruction

362

4.2.13 MPYDP Instruction

363

4.2.14 MPYSPDP Instruction

364

4.2.15 MPYSP2DP Instruction

365

4.3.1 .S-Unit Constraints

366

4.3.2 .M-Unit Constraints

372

4.3.3 .L-Unit Constraints

380

Performance Considerations

388

Pipeline4-56 SPRU733

388

4.4.2 Multicycle NOPs

390

Delay slots of the branch

391

4.4.3 Memory Considerations

392

Program DC E1 E2 E3

393

Pipeline4-62 SPRU733

394

Interrupts

396

5.1 Overview

397

Overview

400

5-5InterruptsSPRU733

400

Interrupts5-6 SPRU733

401

5-7InterruptsSPRU733

402

Located Outside the IST

403

5-11InterruptsSPRU733

406

5.3.2 Status of Interrupts

409

5-17InterruptsSPRU733

412

If an execute

413

5-19InterruptsSPRU733

414

5.5.1 General Performance

416

5.5.2 Pipeline Interaction

416

5.6.2 Nested Interrupts

418

5.6.4 Traps

421

Instruction Compatibility

422

3-126 

424

3-134 

424

3-139 

424

3-238 

426

3-243 

426

3-247    

426

Appendix A

434

Appendix C

434

register offset

436

mode r y op 1 0 s p

438

y op 1 1 s p

438

Appendix D

439

D.3 32-Bit Opcode Maps

442

Appendix E

443

E.3 32-Bit Opcode Maps

446

Appendix F

447

F.3 32-Bit Opcode Maps

450

Appendix G

452

G.3 32-Bit Opcode Maps

454




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