Signal/Connection Descriptions
OnCE/JTAG Interface
MOTOROLA
DSP56309UM/D 2-37
DE
Input/
Output
Input
Debug Event
ÑDE is an open-drain,
bidirectional, active-low signal providing, as
an input, a means of entering debug mode of
operation from an external command
controller, and as an output, a means of
acknowledging that the chip has entered
debug mode. This signal, when asserted as
an input, causes the DSP56300 core to finish
the current instruction being executed, save
the instruction pipeline information, enter
debug mode, and wait for commands to be
entered from the debug serial input line. This
signal is asserted as an output for three clock
cycles when the chip enters debug mode as a
result of a debug request or as a result of
meeting a breakpoint condition. The DE has
an internal pull-up resistor.
This is not a standard part of the JTAG TAP
controller. The signal connects directly to the
OnCE module to initiate debug mode
directly or to provide a direct external
indication that the chip has entered debug
mode. All other interfacing with the OnCE
module must occur through the JTAG port.
Table 2-16
OnCE/JTAG Interface (Continued)
Signal
Name
Type
State
During
Reset
Signal Description
Содержание DSP56309
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Страница 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
Страница 48: ...MOTOROLA DSP56309UM D 2 1 SECTION 2 SIGNAL CONNECTION DESCRIPTIONS ...
Страница 85: ...2 38 DSP56309UM D MOTOROLA Signal Connection Descriptions OnCE JTAG Interface ...
Страница 86: ...MOTOROLA DSP56309UM D 3 1 SECTION 3 MEMORY CONFIGURATION ...
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Страница 124: ...MOTOROLA DSP56309UM D 5 1 SECTION 5 GENERAL PURPOSE I O ...
Страница 125: ...5 2 DSP56309UM D MOTOROLA General Purpose I O 5 1 INTRODUCTION 5 3 5 2 PROGRAMMING MODEL 5 3 ...
Страница 128: ...MOTOROLA DSP56309UM D 6 1 SECTION 6 HOST INTERFACE HI08 ...
Страница 166: ...MOTOROLA DSP56309UM D 7 1 SECTION 7 ENHANCED SYNCHRONOUS SERIAL INTERFACE ESSI ...
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Страница 241: ...8 30 DSP56309UM D MOTOROLA Serial Communication Interface SCI GPIO Signals and Registers ...
Страница 242: ...MOTOROLA DSP56309UM D 9 1 SECTION 9 TRIPLE TIMER MODULE ...
Страница 269: ...9 28 DSP56309UM D MOTOROLA Triple Timer Module Timer Operational Modes ...
Страница 270: ...MOTOROLA DSP56309UM D 10 1 SECTION 10 ON CHIP EMULATION MODULE ...
Страница 302: ...MOTOROLA DSP56309UM D 11 1 SECTION 11 JTAG PORT ...
Страница 369: ...C 22 DSP56309UM D MOTOROLA DSP56309 BSDL Listing ...
Страница 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
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