Texas Instruments C28 Series Student Guide

Interrupt Sources
Interrupt Global Mask Bit
Interrupt Global Mask Bit


INTM used to globally enable/disable interrupts:
INTM used to globally enable/disable interrupts:


Enable:
Enable:
INTM = 0
INTM = 0


Disable:
Disable:
INTM = 1 (reset value)
INTM = 1 (reset value)


INTM modified from assembly code only:
INTM modified from assembly code only:
INTM
INTM
ST1
ST1
Bit 0
Bit 0
/*** Global Interrupts ***/
/*** Global Interrupts ***/
asm
asm
(“ CLRC INTM”); //enable global interrupts
(“ CLRC INTM”); //enable global interrupts
asm
asm
(“ SETC INTM”); //disable global interrupts
(“ SETC INTM”); //disable global interrupts
Peripheral Interrupt Expansion (PIE)
Peripheral Interrupt Expansion
Peripheral Interrupt Expansion
-
-
PIE
PIE
Peripheral Interrupts 12x8 = 96
Peripheral Interrupts 12x8 = 96
IFR
IFR
IER
IER
INTM
INTM
28x
28x
Core
Core
28x Core Interrupt logic
28x Core Interrupt logic
PIE module for 96 Interrupts
PIE module for 96 Interrupts
INT1.x interrupt group
INT1.x interrupt group
INT2.x interrupt group
INT2.x interrupt group
INT3.x interrupt group
INT3.x interrupt group
INT4.x interrupt group
INT4.x interrupt group
INT5.x interrupt group
INT5.x interrupt group
INT6.x interrupt group
INT6.x interrupt group
INT7.x interrupt group
INT7.x interrupt group
INT8.x interrupt group
INT8.x interrupt group
INT9.x interrupt group
INT9.x interrupt group
INT10.x interrupt group
INT10.x interrupt group
INT11.x interrupt group
INT11.x interrupt group
INT12.x interrupt group
INT12.x interrupt group
INT1
INT1
–
–
INT 12
INT 12
12 Interrupts
12 Interrupts
96
96
INT1.1
INT1.1
INT1.2
INT1.2
INT1.8
INT1.8
1
0
1
•
•
•
•
•
•
•
•
•
•
•
•
INT1
INT1
PIEIFR1
PIEIFR1
PIEIER1
PIEIER1
Interrupt Group 1
Interrupt Group 1
INT13
INT13 (TINT1 / XINT13)
INT14
INT14 (TINT2)
NMI
NMI
C28x - Reset and Interrupts 4 - 9

Texas Instruments C28 Series Specifications

General

Brand	Texas Instruments
Model	C28 Series
Category	Computer Hardware
Language	English