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ATSAM9743

1773B–DRMSD–11/02

Principal Elements

Key Circuitry in a

Single Chip

The ATSAM9743 provides a new generation of integrated solutions for electronic musical

instruments and sound processors. The ATSAM9743 places all key circuitry onto a single sili-

con chip: sound synthesizer/processor, 16-bit control processor, 24K x 16 Flash memory, 2K x

16 RAM, and up to 64 individually programmable I/O pins allowing direct interface with key-

board, switches, LCD display, etc.

ATSAM97xx Series

Processing Core

The synthesis/sound processing core of the ATSAM9743 is taken from the ATSAM97xx

series, whose quality has already been demonstrated through dozens of different musical

products such as electric pianos, home keyboards, professional keyboards, classical organs,

sound expanders and effect devices. The maximum polyphony is 64 voices without effects. A

typical application will be 38-voice polyphony with reverb, chorus, 4-band equalizer and

surround.

External Memory

Expansion

Configuration options allow the ATSAM9743 to cover a wide range of products, from the low-

est cost keyboard to the high range multi-effect processor. Thanks to flexible external memory

expansion, up to 4M bytes additional external memory can be used for firmware, orchestra-

tions, PCM data or delay lines. The external memory can be ROM, RAM or Flash. The internal

Flash memory can be programmed on-board from the ATSAM9743 itself by a Flash program-

ming algorithm, which resides in internal ROM on chip.

Standard Compliance

Made Easier

The ATSAM9743 operates from a single 8 MHz crystal. A built-in PLL multiplies by 4 the crys-

tal frequency for internal processing. This minimizes radio frequency interference (RFI),

making it easier to comply with FCC, CSA and CE standards.

Battery Powered

Usage

The ATSAM9743 is very suitable for battery-operated products:

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A power-down feature is included which can be controlled externally (PDWN/ pin).

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Built-in Flash memory words can be individually programmed by the firmware itself.

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Operational voltage is from 3V to 5.5V (I/O).

Quick Time to Market

The ATSAM9743 has been designed with final instrument quick time-to-market in mind. The

ATSAM9743 product development program includes key features to minimize product devel-

opment efforts:

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Specialized debug interface, providing on-target software development with a source code

CodeView debugger.

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Standard sound generation/processing firmware.

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Standard soundbanks.

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Comprehensive technical support available directly from Atmel.