Intel 386 manuali

Intel 386 Manuale Utente (691 pagine)

Marchio: Intel | Categoria: Hardware | Dimensione: 4.48 MB |

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Intel386

Embedded Microprocessor

User’s Manual

Intel386 EX

Embedded

Microprocessor

User’s Manual

GUIDE TO THIS

CHAPTER 1

GUIDE TO THIS MANUAL

Packaging

ARCHITECTURAL

OVERVIEW

CHAPTER 2

ARCHITECTURAL OVERVIEW

A2849-02

2.2 INTEGRATED PERIPHERALS

IEEE Standard Test

CORE OVERVIEW

CHAPTER 3

A2850-01

ORGANIZATION

CHAPTER 4

SYSTEM REGISTER ORGANIZATION

A2499-02

A2495-02

A2496-02

A2502-02

CONFIGURATION

CHAPTER 5

A2535-01

• A timer (OUT1, OUT2)

A2517-03

A2518-02

A3380-01

5.2.7 Core Configuration

DEVICE CONFIGURATION

100

• Interrupt Control Unit:

101

• Timer Control Unit:

101

BUS INTERFACE

112

CHAPTER 6

114

BUS INTERFACE UNIT

114

6.1.1 Bus Signal Descriptions

116

A2305-02

119

A2484-02

121

Figure 6-3. Ready Logic

124

A2486-03

125

A2488-02

131

READY# Asserted •

133

HOLD Asserted

133

• NA# is ignored

136

Figure 6-10. Halt Cycle

140

A2493-02

143

6.3.7.1 Write Cycles

144

6.3.7.2 Read Cycles

144

A3375-01

146

6.6.1.1 System Configuration

152

A2854-02

155

A3265-02

157

MANAGEMENT

158

CHAPTER 7

160

SYSTEM MANAGEMENT MODE

160

A2510-02

164

A2512-02

165

7.3.2.1 SMI# Priority

166

A2508-01

167

A2509-01

168

A2511-02

169

A2505-02

170

A2507-01

171

7.3.4.2 SMRAM State Dump Area

173

CLOCK AND

180

CHAPTER 8

182

A2470-02

183

A2229-03

186

8.4.2.1 Built-in Self Test

193

8.4.2.2 JTAG Reset

193

INTERRUPT

198

CONTROL UNIT

198

CHAPTER 9

200

INTERRUPT CONTROL UNIT

200

9.2.2.2 Determining Priority

206

A2428-01

211

• A poll command is issued

213

A2430-01

228

Data Bus

228

Vector Number

228

IR (Valid)

229

IR sampled on this edge

229

IR (Spurious)

229

A2857-01

230

// Vector Table

238

TIMER/COUNTER

242

CHAPTER 10

244

TIMER/COUNTER UNIT

244

A2317-02

245

Table 10-1. TCU Signals

246

A2395-02

251

A2312-02

252

• A gate trigger

253

• The counter reaches one

253

A2400-01

257

????864286410

258

A2315-01

259

A2316-01

261

Table 10-4. GATE

263

Connection Options

263

10.3.4.1 Simple Read

270

Figure 10-28. Timer

272

– Read Format)

272

Figure 10-30. Timer

275

– Status Format)

275

• With the readback command:

277

ASYNCHRONOUS

286

SERIAL I/O UNIT

286

CHAPTER 11

288

ASYNCHRONOUS SERIAL I/O UNIT

288

A2519-02

289

11.1.1 SIO Signals

290

Figure 11-2. SIO

291

Table 11-1. SIO Signals

291

Figure 11-3. SIO

294

Transmitter

294

Figure 11-4. SIO

295

Figure 11-5. SIO

296

Receiver

296

A2525-02

298

11.2.6.2 SIO DMA sources

300

11.3 REGISTER DEFINITIONS

302

= 1–3])

304

and DLH

309

CONTROLLER

334

CHAPTER 12

336

DMA CONTROLLER

336

A2531-02

337

12.1.2 DMA Signals

339

12.2.2.1 Fly-By Mode

340

12.2.2.2 Two-Cycle Mode

341

A3381-01

343

A2480-02

344

A2332-02

351

A2333-02

355

A2338-02

357

A2336-02

359

Figure 12-17. Cascade Mode

361

12.3 REGISTER DEFINITIONS

363

(read format)

378

(Address)

385

Command Functions

385

DWORD lAddress;

390

SYNCHRONOUS

398

CHAPTER 13

400

SYNCHRONOUS SERIAL I/O UNIT

400

A2435-02

401

A2436-02

402

13.1.1 SSIO Signals

403

Baud-rate Value

405

A3398-01

409

(Enabled when Clock is High)

410

(Enabled when Clock is Low)

410

13.2.2.2 Autotransmit Mode

411

13.2.2.3 Slave Mode

411

A3397-01

413

13.3 REGISTER DEFINITIONS

415

(BCLKIN)

417

SSIO Example Code

425

CHIP-SELECT

434

CHAPTER 14

436

CHIP-SELECT UNIT

436

A2534-01

439

A2392-02

447

ADH, UCSADH)

452

ADL, UCSADL)

453

MSKH, UCSMSKH)

454

MSKL, UCSMSKL)

455

REFRESH

460

CHAPTER 15

462

REFRESH CONTROL UNIT

462

15.4 REGISTER DEFINITIONS

467

INPUT/OUTPUT

478

CHAPTER 16

480

INPUT/OUTPUT PORTS

480

16.1.1 Port Functionality

481

Table 16-1. Pin Multiplexing

484

16.2 REGISTER DEFINITIONS

485

16.4.1 I/O Ports Code Example

490

WATCHDOG

494

TIMER UNIT

494

CHAPTER 17

496

WATCHDOG TIMER UNIT

496

A2330-02

497

Table 17-1. WDT Signals

498

17.4 REGISTER DEFINITIONS

502

JTAG TEST-LOGIC

512

CHAPTER 18

514

JTAG TEST-LOGIC UNIT

514

A2340-01

515

A2356-01

519

× 2 cells)

522

18.4 TIMING INFORMATION

525

DESCRIPTIONS

528

APPENDIX A

530

SIGNAL DESCRIPTIONS

530

COMPATIBILITY

540

WITH THE PC/AT*

540

ARCHITECTURE

540

APPENDIX B

542

COMPATIBILITY WITH THE PC/AT*

542

MASTER#

544

(From PC/AT* Bus)

544

Processor

544

EXAMPLE CODE

548

HEADER FILES

548

APPENDIX C

550

EXAMPLE CODE HEADER FILES

550

C.2 EXAMPLE CODE DEFINES

555

564

REFERENCE

564

APPENDIX D

566

D.2 CLKPRS

572

ADH (UCSADH)

573

ADL (UCSADL)

574

MSKH (UCSMSKH)

575

MSKL (UCSMSKL)

576

AND DLH

577

D.8 DMABSR

578

D.9 DMACFG

579

D.10 DMACHR

580

D.11 DMACMD1

581

D.12 DMACMD2

582

D.13 DMAGRPMSK

583

D.14 DMAIEN

584

D.15 DMAIS

585

D.16 DMAMOD1

586

D.17 DMAMOD2

587

D.18 DMAMSK

588

D.20 DMAOVFE

590

D.21 DMASRR

591

(write format)

591

D.22 DMASTS

592

D.23 ICW1 (MASTER AND SLAVE)

593

D.24 ICW2 (MASTER AND SLAVE)

594

D.25 ICW3 (MASTER)

594

D.26 ICW3 (SLAVE)

595

D.27 ICW4 (MASTER AND SLAVE)

595

D.28 IDCODE

596

D.29 IER

597

D.30 IIR

598

D.31 INTCFG

599

D.33 LCR

601

D.34 LSR

602

D.35 MCR

603

D.36 MSR

604

D.37 OCW1 (MASTER AND SLAVE)

605

D.38 OCW2 (MASTER AND SLAVE)

606

D.39 OCW3 (MASTER AND SLAVE)

607

D.40 P1CFG

608

D.41 P2CFG

609

D.42 P3CFG

610

D.43 PINCFG

611

D.47 POLL (MASTER AND SLAVE)

614

D.48 PORT92

615

D.49 PWRCON

616

D.50 RBR

617

D.51 REMAPCFG

618

D.52 RFSADD

619

D.53 RFSBAD

619

D.54 RFSCIR

620

D.55 RFSCON

620

D.56 SCR

621

D.57 SIOCFG

622

D.58 SSIOBAUD

623

D.59 SSIOCON1

624

D.60 SSIOCON2

625

D.61 SSIOCTR

626

D.62 SSIORBUF

626

D.63 SSIOTBUF

627

D.64 TBR

627

D.65 TMRCFG

628

D.66 TMRCON

629

D.67 TMR

630

D.72 WDTCNTH AND WDTCNTL

633

D.73 WDTRLDH AND WDTRLDL

634

D.74 WDTSTATUS

635

INSTRUCTION SET

636

APPENDIX E

638

INSTRUCTION SET SUMMARY

638

Wait states:

639

Instruction Format

640

Clock Count Notes

640

≤ IOPL. If CPL

658

GLOSSARY

670

Glossary-2

673

Glossary-4

675

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Intel 386 manuali

Intel 386 Manuale Utente (691 pagine)

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