E2D0011-27-43MSM6585

ADPCM Voice Synthesis IC

GENERAL DESCRIPTION

The MSM6585 is an version-up product of the MSM5205 voice synthesis IC. Mainly improved pointsare improvement for the precision of an internal DA converter, a built-in low-pass filter, andexpansion on the sampling frequency. The MSM6585 does not include a control circuit to drive anexternal memory similar to the MSM5205. Therefore, the MSM6585 can be connected with not onlysemiconductor memories, but other memory media (CD-ROM, etc.) by the control of CPU.

FEATURES

4-bit ADPCM method

Built-in 12-bit DA converter

Built-in low-pass filter (LPF) (–40dB/oct) Sampling frequencies: 4k/8k/16k/32kHz

Master clock frequency (ceramic oscillator) : 640kHz

Voice data synthesis : Supported by voice analysis editing tools AR76-202 and AR203 Package options :

18-pin plastic DIP (DIP18-P-300-2.54) (Product name : MSM6585RS)

24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name : MSM6585 GS-K)30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name : MSM6585 GS-AK)

DIFFERENCES BETWEEN MSM6585 AND MSM5205

Master clock frequency: Sampling frequency: ADPCM bit length: DA Converter: Low-pass filter:

Overflow preventing circuit: Power supply voltage:

Operating current consumption: Operating temperature: D3 to D0 input timing

VCK (O)D3 - D0input timingADPCM Data

MSM6585640kHz

4k/8k/16k/32kHz4-bit12-bit

Included (–40dB/oct)Included4.5 to 5.5V10mA

–40 to +85°CMSM5205384kHz

4k/6k/8kHz3-bit/4-bit10-bit

Not includedNot included3.0 to 6.0V4mA

–30 to +70°C

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