Motorola MPC8260 User Manual

Page 17

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MOTOROLA

Contents

xvii

CONTENTS

Paragraph
Number

Title

Page

Number

Chapter 16

Baud-Rate Generators (BRGs)

16.1

BRG Configuration Registers 1Ð8 (BRGCx).....................................................16-2

16.2

Autobaud Operation on a UART .......................................................................16-4

16.3

UART Baud Rate Examples ..............................................................................16-5

Chapter 17

Timers

17.1

Features ..............................................................................................................17-2

17.2

General-Purpose Timer Units.............................................................................17-2

17.2.1

Cascaded Mode ..............................................................................................17-3

17.2.2

Timer Global Configuration Registers (TGCR1 and TGCR2) ......................17-4

17.2.3

Timer Mode Registers (TMR1ÐTMR4).........................................................17-6

17.2.4

Timer Reference Registers (TRR1ÐTRR4)....................................................17-7

17.2.5

Timer Capture Registers (TCR1ÐTCR4) .......................................................17-8

17.2.6

Timer Counters (TCN1ÐTCN4) .....................................................................17-8

17.2.7

Timer Event Registers (TER1ÐTER4) ...........................................................17-8

Chapter 18

SDMA Channels and IDMA Emulation

18.1

SDMA Bus Arbitration and Bus Transfers ........................................................18-2

18.2

SDMA Registers ................................................................................................18-3

18.2.1

SDMA Status Register (SDSR) .....................................................................18-3

18.2.2

SDMA Mask Register (SDMR) .....................................................................18-4

18.2.3

SDMA Transfer Error Address Registers (PDTEA and LDTEA).................18-4

18.2.4

SDMA Transfer Error MSNUM Registers (PDTEM and LDTEM) .............18-4

18.3

IDMA Emulation................................................................................................18-5

18.4

IDMA Features...................................................................................................18-5

18.5

IDMA Transfers .................................................................................................18-6

18.5.1

Memory-to-Memory Transfers ......................................................................18-6

18.5.1.1

External Request Mode ..............................................................................18-8

18.5.1.2

Normal Mode .............................................................................................18-9

18.5.2

Memory to/from Peripheral Transfers ...........................................................18-9

18.5.2.1

Dual-Address Transfers ...........................................................................18-10

18.5.2.1.1

Peripheral to Memory ..........................................................................18-10

18.5.2.1.2

Memory to Peripheral ..........................................................................18-10

18.5.2.2

Single Address (Fly-By) Transfers ..........................................................18-11

18.5.2.2.1

Peripheral-to-Memory Fly-By Transfers .............................................18-11

18.5.2.2.2

Memory-to-Peripheral Fly-By Transfers .............................................18-11

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