DSP56309 Overview
DSP56300 Core Functional Blocks
MOTOROLA
DSP56309UM/D 1-11
¥ SPÑstack pointer
¥ OMRÑoperating mode register
¥ SCÑstack counter register
The PCU also includes a hardware system stack (SS).
1.6.4
PLL and Clock Oscillator
The clock generator in the DSP56300 core is composed of two main blocks: the PLL,
which performs clock input division, frequency multiplication, and skew elimination;
and the clock generator (CLKGEN), which performs low-power division and clock pulse
generation.
¥ Allows change of low-power divide factor (DF) without loss of lock
¥ Output clock with skew elimination
The PLL allows the processor to operate at a high internal clock frequency using a
low-frequency clock input, a feature that offers two immediate benefits:
¥ A lower-frequency clock input reduces the overall electromagnetic interference
generated by a system.
¥ The ability to oscillate at different frequencies reduces costs by eliminating the
need to add additional oscillators to a system.
1.6.5
JTAG TAP and OnCE Module
The DSP56300 core provides a dedicated user-accessible Test Access Port (TAP) that is
fully compatible with the
IEEE 1149.1 Standard Test Access Port and Boundary Scan
Architecture
. Problems associated with testing high density circuit boards have led to
development of this standard under the sponsorship of the Test Technology Committee
of IEEE and the Joint Test Action Group (JTAG). The DSP56300 core implementation
supports circuit-board test strategies based on this standard.
The test logic includes a TAP consisting of four dedicated signals, a 16-state controller,
and three test data registers. A boundary scan register links all device signals into a
single shift register. The test logic, implemented utilizing static logic design, is
independent of the device system logic. More information on the JTAG port is provided
in
Содержание DSP56309
Страница 25: ...xxii DSP56309UM D MOTOROLA Figure D 25 Port E Registers PCRE PRRE PDRE D 39 ...
Страница 30: ...MOTOROLA DSP56309UM D 1 1 SECTION 1 DSP56309 OVERVIEW ...
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 ...
Страница 104: ...MOTOROLA DSP56309UM D 4 1 SECTION 4 CORE CONFIGURATION ...
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 ...
Страница 212: ...MOTOROLA DSP56309UM D 8 1 SECTION 8 SERIAL COMMUNICATION INTERFACE SCI ...
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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