Texas Instruments C2000 Workshop Guide And Lab Manual

External Interrupts
5 - 16 C2000 Microcontroller Workshop - System Initialization
External Interrupts
External Interrupts
 3 external interrupt signals: XINT1, XINT2
and XINT3
 XINT1, XINT2 and XINT3 can be mapped to
any of GPIO0-31
 XINT1, XINT2 and XINT3 also each have a
free-running 16-bit counter that measures
the elapsed time between interrupts

The counter resets to zero each time the
interrupt occurs
External Interrupt Registers
 Pin Selection Register chooses which pin the signal comes out on
 Only one pin can be assigned to each interrupt signal

Configuration Register controls the enable/disable and polarity

Counter Register holds the interrupt counter
Interrupt Pin Selection Register Configuration Register Counter Register
(GpioIntRegs.register) (XIntruptRegs.register) (XIntruptRegs.register)
XINT1 GPIOXINT1SEL XINT1CR XINT1CTR
XINT2 GPIOXINT2SEL XINT2CR XINT2CTR
XINT3 GPIOXINT3SEL XINT3CR XINT3CTR

Texas Instruments C2000 Specifications

General

Brand	Texas Instruments
Model	C2000
Category	Microcontrollers
Language	English