Triple Timer Module
Timer Operational Modes
MOTOROLA
DSP56309UM/D 9-27
Note:
In this mode, internal logic preserves the TIO value and direction for an
additional 2.5 internal clock cycles after a DSP56309 hardware RESET signal is
asserted. This insures that a valid reset signal is generated when the TIO signal
is used to reset the DSP56309.
9.4.5
Reserved Modes
Modes 8, 11, 12, 13, 14, and 15 are reserved.
9.4.6
Special Cases
The following special cases apply during wait and stop state.
9.4.6.1
Timer Behavior during Wait
Timer clocks are active during the execution of the WAIT instruction and timer activity
is undisturbed. If a timer interrupt is generated, the DSP56309 leaves the wait state and
services the interrupt.
9.4.6.2
Timer Behavior during Stop
During the execution of the STOP instruction, the timer clocks are disabled, timer
activity is stopped, and the TIO signals are disconnected. Any external changes that
happen to the TIO signals are ignored when the DSP56309 is in the stop state. To insure
correct operation, the timers should be disabled before the DSP56309 is placed into the
stop state.
9.4.7
DMA Trigger
Each timer can also be used to trigger DMA transfers. For this to occur, a DMA channel
must be programmed to be triggered by a timer event. The timer issues a DMA trigger
on every event in all modes of operation. The DMA channel does not have the capability
to save multiple DMA triggers generated by the timer. To insure that all DMA triggers
are serviced, the user must provide for the preceding DMA trigger to be serviced before
the next trigger is received by the DMA channel.
Summary of Contents for DSP56309
Page 25: ...xxii DSP56309UM D MOTOROLA Figure D 25 Port E Registers PCRE PRRE PDRE D 39 ...
Page 30: ...MOTOROLA DSP56309UM D 1 1 SECTION 1 DSP56309 OVERVIEW ...
Page 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
Page 48: ...MOTOROLA DSP56309UM D 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Page 85: ...2 38 DSP56309UM D MOTOROLA Signal Connection Descriptions OnCE JTAG Interface ...
Page 86: ...MOTOROLA DSP56309UM D 3 1 SECTION 3 MEMORY CONFIGURATION ...
Page 104: ...MOTOROLA DSP56309UM D 4 1 SECTION 4 CORE CONFIGURATION ...
Page 124: ...MOTOROLA DSP56309UM D 5 1 SECTION 5 GENERAL PURPOSE I O ...
Page 125: ...5 2 DSP56309UM D MOTOROLA General Purpose I O 5 1 INTRODUCTION 5 3 5 2 PROGRAMMING MODEL 5 3 ...
Page 128: ...MOTOROLA DSP56309UM D 6 1 SECTION 6 HOST INTERFACE HI08 ...
Page 166: ...MOTOROLA DSP56309UM D 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
Page 212: ...MOTOROLA DSP56309UM D 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
Page 241: ...8 30 DSP56309UM D MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Page 242: ...MOTOROLA DSP56309UM D 9 1 SECTION 9 TRIPLE TIMER MODULE ...
Page 269: ...9 28 DSP56309UM D MOTOROLA Triple Timer Module Timer Operational Modes ...
Page 270: ...MOTOROLA DSP56309UM D 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Page 302: ...MOTOROLA DSP56309UM D 11 1 SECTION 11 JTAG PORT ...
Page 369: ...C 22 DSP56309UM D MOTOROLA DSP56309 BSDL Listing ...
Page 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
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