2-24
DSP56309UM/D MOTOROLA
Signal/Connection Descriptions
Enhanced Synchronous Serial Interface
2.9
ENHANCED SYNCHRONOUS SERIAL INTERFACE
Two synchronous serial interfaces (ESSI0 and ESSI1) provide a full-duplex serial port for
serial communication with a variety of serial devices, including one or more
industry-standard codecs, other DSPs, microprocessors, and peripherals which
implement the Motorola SPI.
2.9.1
ESSI0
The ESSI0 signal descriptions for the DSP56309 are listed in
Table 2-12
Enhanced Synchronous Serial Interface 0 (ESSI0)
Signal
Name
Type
State
During
Reset
Signal Description
SC00
PC0
Input or
Output
Input
Serial Control 0
ÑThe function of SC00 is
determined by the selection of either
synchronous or asynchronous mode. For
asynchronous mode, this signal is used for
the receive clock I/O (Schmitt-trigger input).
For synchronous mode, this signal is used
either for Transmitter 1 output or for Serial
I/O Flag 0.
This signal is driven by a weak keeper after
reset.
Port C 0
ÑThe default configuration
following reset is GPIO input PC0. When this
port is configured as PC0, signal direction is
controlled through the Port C direction
register (PRR0). The signal can be configured
as ESSI signal SC00 through the Port C
control register (PCR0).
Содержание DSP56309
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Страница 47: ...1 18 DSP56309UM D MOTOROLA DSP56309 Overview DSP56309 Architecture Overview ...
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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 ...
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Страница 370: ...MOTOROLA DSP56309UM D D 1 APPENDIX D PROGRAMMING REFERENCE ...
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