MSM6585

OKI Semiconductor MSM6585 ADPCM Voice Synthesis IC FEDL6585-02 Issue Date: Jun. 2004 GENERAL DESCRIPTION The MSM6585 is an version-up product of the MSM5205 voice synthesis IC. Mainly improved points are improvement for the precision of an internal DA converter, a built-in low-pass filter, and expansion on the sampling frequency. The MSM6585 does not include a control circuit to drive an external memory similar to the MSM5205. Therefore, the MSM6585 can be connected with not only semiconductor 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 tool AR207 Package options: 18-pin plastic DIP (DIP18-P-300-2.54) (MSM6585RS) 24-pin plastic SOP (SOP24-P-430-1.27-K) (MSM6585MAZXXX) 30-pin plastic SSOP (SSOP30-P-56-0.65-K) (MSM6585MBZXXX) 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 - D0 input timing ADPCM Data MSM6585 MSM5205 MSM6585 640kHz 4k/8k/16k/32kHz 4-bit 12-bit Included (–40dB/oct) Included 4.5 to 5.5V 10mA –40 to +85°C MSM5205 384kHz 4k/6k/8kHz 3-bi...