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Chapter 9
Triple Timer Module
The timers in the DSP56303 internal triple timer module act as timed pulse generators or as
pulse-width modulators. Each timer has a single signal that can function as a GPIO signal or
as a timer signal. Each timer can also function as an event counter to capture an event or to
measure the width or period of a signal.
9.1
Overview
The timer module contains a common 21-bit prescaler and three independent and identical
general-purpose 24-bit timer/event counters, each with its own register set. Each timer has the
following capabilities:
n
Uses internal or external clocking
n
Interrupts the DSP56303 after a specified number of events (clocks) or signals an
external device after counting internal events
n
Triggers DMA transfers after a specified number of events (clocks) occurs
n
Connects to the external world through one bidirectional signal, designated
for timers 0–2.
TIO[0– 2]
When
is configured as an input, the timer functions as an external event counter or
TIO
measures external pulse width/signal period. When
functions as a timer, a watchdog timer, or a pulse-width modulator. When the timer does not
use
, it can be used as a GPIO signal (also called
TIO
is configured as an output, the timer
TIO
TIO[0–2])
Triple Timer Module
.
9-1
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