GENERAL DESCRIPTION

The MSM9811 is a 4-channel mixing voice synthesis LSI, to which up to 128 Mbits of ROM and/or EPROM storing voice data can directly be connected externally.

The device is straight 8-bit PCM playback, non-linear 8-bit PCM playback, 4-bit ADPCM playback, and 4-bit ADPCM2 playback selectable and provides 2-channel stereo output and volume control. The MSM9811 contains a 14-bit D/A converter and LPF.

The MSM9811 can easily configure a system by connecting voice data storage memory, power amplifier, and CPU externally.

FEATURES

? Non-linear 8-bit PCM/straight 8-bit PCM/4-bit ADPCM/4-bit ADPCM2

? Serial input or parallel input selectable

? Phrase Control Table function

? 4-channel mixing function

? Master clock frequency : 4.096 MHz

? Sampling frequency : 4.0 kHz, 5.3 kHz, 6.4 kHz, 8.0 kHz, 10.6 kHz, 12.8 kHz, 16.0 kHz, 21.2 kHz, 25.6 kHz, 32.0 kHz

? Maximum number of phrases : 256

? Output channel : L/R 2 channels

? Built-in volume control function (for each output channel)

? Built-in 14-bit D/A converter

? Built-in low-pass filter : Digital filter

? Package : 64-pin plastic QFP (QFP64-P-1414-0.80-BK) (MSM9811GA)