Datasheet

 2011-2013 Microchip Technology Inc. DS70657G-page 335
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
24.0 PERIPHERAL TRIGGER
GENERATOR (PTG) MODULE
24.1 Module Introduction
The Peripheral Trigger Generator (PTG) provides a
means to schedule complex high-speed peripheral
operations that would be difficult to achieve using soft-
ware. The PTG module uses 8-bit commands, called
“Steps”, that the user writes to the PTG Queue regis-
ters (PTGQUE0-PTQUE7), which perform operations,
such as wait for input signal, generate output trigger
and wait for timer.
The PTG module has the following major features:
• Multiple clock sources
• Two 16-bit general purpose timers
• Two 16-bit general limit counters
• Configurable for rising or falling edge triggering
• Generates processor interrupts to include:
- Four configurable processor interrupts
- Interrupt on a Step event in Single-Step mode
- Interrupt on a PTG Watchdog Timer time-out
• Able to receive trigger signals from these
peripherals:
-ADC
-PWM
- Output Compare
- Input Capture
- Op Amp/Comparator
-INT2
• Able to trigger or synchronize to these
peripherals:
- Watchdog Timer
- Output Compare
- Input Capture
-ADC
-PWM
- Op Amp/Comparator
Note 1: This data sheet summarizes the
features of the dsPIC33EPXXXGP50X,
dsPIC33EPXXXMC20X/50X and
PIC24EPXXXGP/MC20X families of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to “Section 32. Peripheral
Trigger Generator (PTG)” (DS70669) of
the “dsPIC33E/PIC24E Family Refer-
ence Manual”, which is available from the
Microchip web site (www.microchip.com).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.