DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 195
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DSP56303
Manufacturer Part Number
DSP56303
Description
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.DSP56303.pdf
(292 pages)
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9.2 Operation
This section discusses the following timer basics:
9.2.1 Timer After Reset
A hardware
Register for each timer, thus configuring each timer as a GPIO. A timer is active only if the timer
enable bit 0 (TCSR[TE]) in the specific timer TCSR is set.
9.2.2 Timer Initialization
To initialize a timer, do the following:
Freescale Semiconductor
1.
2.
Reset
Initialization
Exceptions
Ensure that the timer is not active either by sending a reset or clearing the TCSR[TE]
bit.
Configure the control register (TCSR) to set the timer operating mode. Set the interrupt
enable bits as needed for the application.
RESET
GDB
TIO
Control/Status
Timer Control
CLK/2
Register
signal or software reset instruction clears the Timer Control and Status
Logic
24
9
Prescaler CLK
TCSR
Figure 9-2. Timer Module Block Diagram
2
24
DSP56303 User’s Manual, Rev. 2
Register
Load
24
TLR
Counter
24
Timer interrupt/DMA request
Register
Count
24
TCR
24
24
Compare
Register
=
24
24
TCPR
Operation
9-3