DSP56309 Overview
DSP56309 Architecture Overview
MOTOROLA
DSP56309UM/D 1-17
additional logic to peripherals that use TTL-level signals. With a small amount of
additional logic, the SCI can connect to peripheral interfaces that have non-TTL level
signals, such as the RS-232C, RS-422, etc.
This interface uses three dedicated signals: transmit data (TXD), receive data (RXD), and
SCI serial clock (SCLK). It supports industry-standard asynchronous bit rates and
protocols, as well as high-speed synchronous data transmission
(
up to 8.25 Mbps for a
66 MHz clock). The asynchronous protocols supported by the SCI include a multidrop
mode for master/slave operation with wakeup on idle line and wakeup on address bit
capability. This mode allows the DSP56309 to share a single serial line efficiently with
other peripherals.
The SCI consists of separate transmit and receive sections that can operate
asynchronously with respect to each other. A programmable baud-rate generator
provides the transmit and receive clocks. An enable vector and an interrupt vector have
been included so that the baud-rate generator can function as a general purpose timer
when it is not being used by the SCI or when the interrupt timing is the same as that
used by the SCI.
1.10.5
Timer Module
The triple timer module is composed of a common 21-bit prescaler and three
independent and identical general-purpose 24-bit timer/event counters, each with its
own memory-mapped register set.
Each timer has a single signal that can function as a GPIO signal or as a timer signal.
Each timer can use internal or external clocking and can interrupt the DSP after a
specified number of events (clocks) or can signal an external device after counting
internal events. Each timer connects to the external world through one bidirectional
signal. When this signal is configured as an input, the timer can function as an external
event counter or measures external pulse width/signal period. When the signal is used
as an output, the timer can function as either a timer, a watchdog, or a Pulse Width
Modulator (PWM).
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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