Motorola M-CORE MMC2001 Series Reference Manual page 9

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12.4 ISPI Programming Model ............................................................................... 12-4
12.4.1 ISPI Data Register....................................................................................... 12-5
12.4.2 ISPI Control Register................................................................................... 12-5
12.4.3 ISPI Interval Control Register...................................................................... 12-8
12.4.4 ISPI Status Register .................................................................................... 12-8
12.5 ISPI Programming Examples ......................................................................... 12-9
12.5.1 Manual Mode Example................................................................................ 12-9
12.5.2 Slave Mode Example ................................................................................ 12-10
12.5.3 Interval Model Example............................................................................. 12-10
12.6 ISPI Operation in Low-Power System Modes .............................................. 12-11
12.7 ISPI Operation in System Debug Mode ....................................................... 12-11
EXTERNAL INTERRUPTS/GPIO (EDGE PORT)
13.1 Overview ........................................................................................................ 13-1
13.2 Interrupt/General-Purpose I/O Pin Descriptions (INT[0:7]) ............................ 13-1
13.3 Edge Port Programming Model...................................................................... 13-2
13.3.1 Edge Port Pin Assignment Register (EPPAR) ............................................ 13-2
13.3.2 Edge Port Data Direction Register (EPDDR) .............................................. 13-3
13.3.3 Edge Port Data Register (EPDR) ................................................................ 13-3
13.3.4 Edge Port Flag Register (EPFR) ................................................................. 13-4
14.1 Overview ........................................................................................................ 14-1
14.2 KPP Pin Description....................................................................................... 14-2
14.2.1 Input Pins .................................................................................................... 14-2
14.2.2 Output Pins.................................................................................................. 14-2
14.3 KPP Programming Model............................................................................... 14-2
14.3.1 Keypad Control Register (KPCR)................................................................ 14-2
14.3.2 Keypad Status Register (KPSR) ................................................................. 14-3
14.3.3 Keypad Data Direction Register (KDDR) .................................................... 14-5
14.3.4 Keypad Data Register (KPDR).................................................................... 14-5
14.4 Keypad Operation .......................................................................................... 14-6
14.4.1 Keypad Matrix Construction ........................................................................ 14-6
14.4.2 Keypad Port Configuration .......................................................................... 14-6
14.4.3 Keypad Matrix Scanning ............................................................................. 14-6
14.4.4 Keypad Standby ......................................................................................... 14-7
14.4.5 Glitch Suppression on Keypad Inputs ......................................................... 14-7
14.4.6 Multiple Key Closures.................................................................................. 14-8
14.4.7 Typical Keypad Configuration and Scanning Sequence ............................. 14-9
MOTOROLA
x
Freescale Semiconductor, Inc.
TABLE OF CONTENTS
Title
SECTION 13
SECTION 14
KEYPAD PORT
For More Information On This Product,
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Page
MMC2001
REFERENCE MANUAL