GPCR03B

SINGLE-CHIP VOICE

RECORD/PLAYBACK DEVICES

1. GENERAL DESCRIPTION

The GPCR03B is a record and playback device without CPU.

It

includes

256K-bit

working

SRAM

capable

of

storing

approximately 10 seconds of audio or speech data (@ 6.0KHz

sampling rate).

Easy-to-use with low power consumption, it has

MIC (microphone) input, AGC function, one PWM audio output

and direct speaker driver offering the simplest solution for users.

For audio processing, melody and speech can be mixed into one

output.

It operates over a wide operating voltage range (2.4V -

5.5V) providing various battery options.

Providing the best

cost/performance ratio for users, the GPCR03B includes, not

only the latest technology, but also the full commitment and

technical support of Generalplus.

2. BLOCK DIAGRAM

AUDP

CLOCK

GENERATOR

ADDRESS

COUNTER

MICPHONE

INPUT

&

AUTOMATIC

GAIN CONTROL

CONTROL

LOGIC

256K BITS

MEMORY CELL

ADPCM

DECODER

&

PWM

OUTPUT

ROSC

OP1I

OP1O

RECO

PLAY

ADPCM

ENCODER

MIC

ALC

AUDN

LOWPRESS

&

FILTER

3. FEATURES

Nature, high-quality playback suitable for voice, music, and

tones

Single-chip voice record and playback device

Microphone preamplifier

Automatic gain control

Direct speaker driver

Built in 256K-bit SRAM

Wide operating voltage: 2.4V - 5.5V

Frequency of playing and recording: 4K - 12KHz

4. APPLICATION FIELD

Memo Message Recorder

Hand-Carried Message Recorder

Recordable Toys

© Generalplus Technology Inc.

Proprietary & Confidential

1

JUN. 22, 2005

Version: 1.2