MSM5218

¡ Semiconductor ¡ Semiconductor MSM5218 ADPCM Voice Analysis/Synthesis IC MSM5218 GENERAL DESCRIPTION The MSM5218 is a complete voice analysis/synthesis IC featuring the Adaptive Differential Pulse Code Modulation (ADPCM) method of data compression. The MSM5218 contains an analysis stage where serial PCM data is compressed to 3- or 4-bit parallel ADPCM data. In addition, a synthesis stage synthesizes PCM data from ADPCM data. FEATURES ADPCM data compatible with OKI's synthesis IC MSM5205 Analysis/synthesis switching pin provided Lower power consumption achieved by one-chip CMOS IC Built-in 10-bit D/A converter for analog output Variable sampling frequency (4 kHz, 6 kHz, 8 kHz) Master clock frequency: 384 kHz Package: 24-pin plastic DIP (DIP24-P-600) (Product name: MSM5218RS) BLOCK DIAGRAM VDD BIN/TOC 12-bit SR f SI SICK ADSI SCON XT XT S1 S2 VCK RESET T1 T2 VSS DAS 10 ADPCM Synthesizer 12 12-bit SR SOCK 10-bit DAC DAOUT MSB/SO 12 ADPCM Analyzer 4B/3B ANA/SYN D3 D2 D1 D0 OSC Timing Circuit MSM5218 ¡ Semiconductor PIN CONFIGURATION (TOP VIEW) VCK 1 D0 2 D1 3 D2 4 D3 5 ANA/SYN 6 4B/3B 7 S1 8 S2 9 SICK 10 ADSI 11 VSS 12 24 V DD 23 XT 22 XT 21 RESET 20 BIN/TOC 19 MSB/SO 18 DAOUT 17 T2 16 T1 15 DAS 14 SOCK 13 SCON 24-Pin Plastic DIP Note: The product name actually printed on the product is "M5218". ¡ Semiconductor MSM5218 ABSOLUTE MAXIMUM RATINGS Parameter Power Supply Voltage Input Voltage Power Dissipation Storage Temperature Symbol VDD VIN PD TSTG...