Periodic Interrupt Timer and Real Time Interrupt (PIT_RTI)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
28-2
Freescale Semiconductor
Preliminary
Figure 28-1. PIT_RTI Block Diagram
28.1.2
Features
The PIT_RTI has these major features:
•
One 32-bit RTI timer to wakeup the CPU in wait mode
•
Eight additional 32-bit timers generating DMA trigger pulses
•
Timers can be configured to generate interrupts instead of triggers
•
Timers 7 and 8 can be the source of the eQADC trigger inputs via SIU configuration
•
All interrupts are maskable and can be initiated even when the bus clock is switched off
•
Power saving with a separate input clock for the RTI timer
(all other timers share one common core clock)
•
Independent timeout periods for each timer
RTI
Timer 8
Timer 1
.
.
.
PIT_RTI
Registers
Peripheral
interrupts
timeout
load_value
Peripheral
PIT_RTI
.
.
.
triggers
Independent
RTI Oscillator
bus
Clock
bus clock
(XOSC)