MAC7200 datasheet(29/976 Pages) FREESCALE

29 / 976 page

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

xxix

29.7.1.2

Generation of START ..............................................................................................565

29.7.1.3

Post-Transfer Software Response ............................................................................565

29.7.1.4

Generation of STOP.................................................................................................566

29.7.1.5

Generation of Repeated START ..............................................................................567

29.7.1.6

Slave Mode ..............................................................................................................567

29.7.1.7

Arbitration Lost .......................................................................................................567

29.7.2

DMA Application Information ....................................................................................569

29.7.2.1

DMA Mode, Master Transmit .................................................................................569

29.7.2.2

DMA Mode, Master RX ..........................................................................................570

29.7.2.3

Exiting DMA Mode, System Requirement Considerations ....................................571

Chapter 30

Deserial Serial Peripheral Interface (DSPI)

30.1

Introduction to the DSPI on MAC7200 ...........................................................................575

30.2

DSPI Features ..................................................................................................................575

30.3

DSPI Protocol ..................................................................................................................575

30.4

DSPI Implementation ......................................................................................................576

30.5

DSPI External Pins ..........................................................................................................577

30.6

DSPI Bus Aborts..............................................................................................................577

30.7

DSPI Differences from MAC71xx ..................................................................................577

30.8

DSPI Application Usage ..................................................................................................578

30.8.1

Enabling the DSPI .......................................................................................................578

30.8.2

Baud Rate Calculation .................................................................................................578

30.9

DSPI Module ...................................................................................................................579

30.9.1

Block Diagram.............................................................................................................579

30.9.2

Overview......................................................................................................................580

30.9.3

DSPI Configuration .....................................................................................................580

30.9.3.1

SPI Configuration ....................................................................................................580

30.9.4

Modes of Operation .....................................................................................................580

30.9.4.1

Master Mode ............................................................................................................581

30.9.4.2

Slave Mode ..............................................................................................................581

30.9.4.3

Module Disable Mode .............................................................................................581

30.9.4.4

External Stop Mode .................................................................................................581

30.9.4.5

Debug Mode ............................................................................................................581

30.10

External Signal Description .............................................................................................581

30.10.1

Overview......................................................................................................................581

30.10.2

Detailed Signal Description .........................................................................................582

30.10.2.1

PCS[0]/SS — Peripheral Chip Select/Slave Select .................................................582

30.10.2.2

PCS[1] - PCS[3] — Peripheral Chip Selects 1 - 3...................................................582

30.10.2.3

PCS[4]/MTRIG — Peripheral Chip Select 4/Master Trigger .................................582

30.10.2.4

PCS[5]/PCSS — Peripheral Chip Select 5/Peripheral Chip Select Strobe..............582

30.10.2.5

PCS[6] - PCS[7] — Peripheral Chip Selects 6- 7....................................................583

30.10.2.6

SIN — Serial Input ..................................................................................................583

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