General Description

The ELAN eSLS Series IC is a 16-bit DSP Sound Processor with multi-channel speech and instrument playback. It is based on ELAN 16-bit DSP platform. The series has a powerful 16-bit DSP architecture that handles most of the speech/melody functions. Speech and melody can be played back simultaneously. The speech synthesis is implemented by software and supports a wide range of compression bit rates and various volume levels. The ELAN eSLS Series provides real instrument waveform to obtain good quality melody. The ELAN eSLS peripheral includes RTC, Timer, WDT, DAC, PWM, etc.
The ELAN eSLS Series IC's offer Fast mode, Sleep mode, Green mode, and Slow mode of operation. The use of Green/Slow mode will further reduce power consumption. The Green mode also provides RTC function for wake-up purpose.
The ELAN eSLS Series enhanced features make it suitable for versatile voice and sound effect product applications, besides, users are motivated to explore a wide variety of new creative ideas and products.
The ELAN eSLS Series have extreme high performance in speech application based on powerful DSP architecture and good algorithm in audio compression. We provide up to 2-channel speech with different channel sample rate or 1-channel speech + 8-channel melody.

Features

• MCU
          * 16-bit RISC CPU architecture.
          * CPU clock: 20MHz @ 3.3V.
          * Programmable PLL.
          * Four CPU operation modes: fast, slow, green, sleep.
          * Powerful DSP Instruction Set supports multiplication, division, repeat, loop and soft interrupt instructions.
          * Saturation mode supported for multimedia applications.
          * Eight general purpose registers (GPR).
          * 21 interrupt sources with 2-level priority.
• Memory
          * 32K-word program memory.
          * 2K-word data RAM.
          * 128/256/512K-word data ROM
• Peripherals
          * Real Time Clock (RTC) with wake-up function.
          * Four 8-bit timers, two general purpose timers, two multiple-function timers.
          * 8-bit Watchdog Timer (WDT) with general purpose timer capability.
          * 24 GPIO
• Audio
          * 12-bit current-steering Digital to Analog Converter (DAC).
          * 10-bit resolution Pulse Width Modulation (PWM).
          * Built-in software voice synthesizer (0.8K ~ 40Kbps@8kHz).
          * Multiple flash with volume level option.
          * Control port output value directly by waveform (waveform control port).
          * Support mark code in waveform.
          * Up to 2-channel speech with different channel sample rate or 1-channel speech + 8-channel melody.