S1V3G340

Voice Guidance LSI

 Overview

The S1V3G340 is an LSI incorporating high-compression, high-quality audio decoding functions, external

SPI flash memory interface, and a DA converter, making it ideal for use in voice guidance products. The

voice data creation tool for EPSON voice guidance LSI allows easy creation of high-quality voice data

without the need for studio recording. Use of external SPI flash memory allows easy interchanging of voice

data. Additional voice data can be transferred from a host when required. General-purpose output ports are

provided to allow flexible system design. All functions are controlled by commands via a serial interface for

easy addition to any existing system incorporating a host. The S1V3G340 offers pin compatibility with the

S1V3034x Series* facilitating substitution to suit system configurations.

The S1V3G340 will help users reduce time-to-market for products incorporating built-in voice guidance

functions.

* External parts differ from S1V3034x Series devices.

 Features



Audio playback

-

High-compression, high-quality audio decoder

(proprietary Epson data format)

-

Bitrate: 40 kbps, 32 kbps, 24 kbps, 16 kbps

-

Sampling rate: 16 kHz



Sequencer function (phrase interval setting)

-

Sequence setting for up to 64 phrases

(unlimited combinations)

-

Variable phrase interval delay setting: 0 ms or 20 ms to

2,047 ms (in 1 ms steps)



External SPI flash memory interface

-

Clock synchronized serial interface (SPI)

-

Maximum approx. 128 mins (16 Mbytes)



GPO

-

7 pins



Host interface

-

Clock synchronized serial interface,

supporting UART and I2C

-

Command control



High-quality 16-bit DA converter

-

-

Input bits: 16 bits



Clock

-

Clock input: 32.768 kHz or 12.288 MHz

-

Crystal oscillator: 32.768 kHz



Package

-

QFP-52 pin (10 mm

 10 mm) 0.65 mm pin pitch



Power supply voltage

-

2.2 V to 5.5 V (single power supply)

 Standard application system

The S1V3G340 standard application system is configured as shown in the diagram below. The S1V3G340

is command-controlled by the host using a messaging protocol via the serial interface.

Controlled by commands sent from the host via the serial interface after power-on resetting, the S1V3G340

outputs voice audio while internally decoding and processing internal or streamed (via host command

transfer) compressed audio data.

Speaker

GPO x 7

SPI

flash memory

DA converter

Command controller

SPI master I/F

Serial interface

(SPI/UART/I2C)

Clock or crystal oscillator

32.768 kHz or 12.288 MHz

Power supply voltage

2.2 V to 5.5 V

(single power supply)

ROM

SRAM

Voice decoder

Host

SEIKO EPSON CORPORATION