GPCR03B

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 ROSC CLOCK GENERATOR ADDRESS COUNTER MIC ALC OP1I OP1O MICPHONE INPUT & AUTOMATIC GAIN CONTROL & LOWPRESS FILTER ADPCM ENCODER PLAY RECO CONTROL LOGIC 256K BITS MEMORY CELL ADPCM DECODER & PWM OUTPU...