MC68340 datasheet(24/962 Pages) MOTOROLA

24 / 962 page

Table of Contents

Paragraph

Title

Page

Number

MC68360 USER’S MANUAL

MOTOROLA

7.13.9.1

Port B Assignment Registers (PBPAR) ...............................................7-356

7.13.9.2

Data Direction Register (PBDIR) .........................................................7-356

7.13.9.3

Data Register (PBDAT)........................................................................7-356

7.13.9.4

Open-Drain Register (PBODR)............................................................7-356

7.14

Parallel I/O Ports..................................................................................7-356

7.14.1

Parallel I/O Key Features.....................................................................7-357

7.14.2

Parallel I/O Overview ...........................................................................7-357

7.14.3

Port A Pin Functions ............................................................................7-357

7.14.4

Port A Registers...................................................................................7-359

7.14.4.1

Port A Open-Drain Register (PAODR).................................................7-359

7.14.4.2

Port A Data Register (PADAT).............................................................7-359

7.14.4.3

Port A Data Direction Register (PADIR) ..............................................7-359

7.14.4.4

Port A Pin Assignment Register (PAPAR) ...........................................7-359

7.14.5

Port A Examples ..................................................................................7-360

7.14.6

Port B Pin Functions ............................................................................7-362

7.14.7

Port B Registers...................................................................................7-363

7.14.7.1

Port B Open-Drain Register (PBODR).................................................7-363

7.14.7.2

Port B Data Register (PBDAT).............................................................7-364

7.14.7.3

Port B Data Direction Register (PBDIR) ..............................................7-364

7.14.7.4

Port B Pin Assignment Register (PBPAR) ...........................................7-364

7.14.8

Port B Example ....................................................................................7-365

7.14.9

Port C Pin Functions ............................................................................7-365

7.14.10

Port C Registers...................................................................................7-367

7.14.10.1

Port C Data Register (PCDAT) ............................................................7-368

7.14.10.2

Port C Data Direction Register (PCDIR) ..............................................7-368

7.14.10.3

Port C Pin Assignment Register (PCPAR)...........................................7-368

7.14.10.4

Port C Special Options (PCSO) ...........................................................7-368

7.14.10.5

Port C Interrupt Control Register (PCINT) ...........................................7-369

7.15

CPM Interrupt Controller (CPIC) ..........................................................7-369

7.15.1

Overview ..............................................................................................7-370

7.15.2

CPM Interrupt Source Priorities ...........................................................7-372

7.15.2.1

SCC Relative Priority ...........................................................................7-372

7.15.2.2

Highest Priority Interrupt ......................................................................7-372

7.15.2.3

Nested Interrupts .................................................................................7-373

7.15.3

Masking Interrupt Sources in the CPM ................................................7-374

7.15.4

Interrupt Vector Generation and Calculation........................................7-375

7.15.5

CPIC Programming Model ...................................................................7-377

7.15.5.1

CPM Interrupt Configuration Register (CICR)......................................7-377

7.15.5.2

CPM Interupt Pending Register (CIPR) ...............................................7-379

7.15.5.3

CPM Interrupt Mask Register (CIMR) ..................................................7-380

7.15.5.4

CPM Interrupt In-Service Register (CISR) ...........................................7-380

7.15.6

Interrupt Handler Examples .................................................................7-381

7.15.6.1

Example 1—PC6 Interrupt Handler .....................................................7-381

7.15.6.2

Example 2—SCC1 Interrupt Handler...................................................7-381

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