DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 193

• Manufacturer Part Number: DSP56309EVM
• Description: KIT EVALUATION FOR XC56309
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of DSP56309EVM

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Description/function: Audio DSPs
• Product: Audio Modules
• For Use With/related Products: DSP56309
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Triple Timer Module
The timers in the DSP56309 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:
When
external pulse width/signal period. When
timer, a watchdog timer, or a pulse-width modulator. When the timer does not use
used as a GPIO signal (also called
9.1.1 Triple Timer Module Block Diagram
Figure 9-1 shows a block diagram of the triple timer module. This module includes a 24-bit
Timer Prescaler Load Register (TPLR), a 24-bit Timer Prescaler Count Register (TPCR), and
three timers. Each timer can use the prescaler clock as its clock source.
Freescale Semiconductor
TIO
Uses internal or external clocking
Interrupts the DSP56309 after a specified number of events (clocks) or signals an external
device after counting internal events
Triggers DMA transfers after a specified number of events (clocks) occurs
Connects to the external world through one bidirectional signal, designated
TIO[0– 2]
is configured as an input, the timer functions as an external event counter or measures
for timers 0–2.
TIO[0–2])
DSP56309 User’s Manual, Rev. 1
TIO
.
is configured as an output, the timer functions as a
TIO
, it can be
9
9-1