The MSM6679A-110 is a voice recognition processor that performs functions such as voice recognition, recording/playback, and speech synthesis. It integrates features such as a memory controller, flash memory interface, analog data conversion, Oki speech synthesizer interface, and PWM sound output.
The MSM6679A-110 is a slave‑mode voice‑recognition processor that provides speaker‑independent and speaker‑dependent recognition, solid‑state recording/playback, speech synthesis and PWM audio output. It includes an on‑chip memory controller, flash interface, analog‑to‑digital conversion and a serial command API for easy integration.
The document details functional block diagrams, pin assignments for 84‑pin PLCC and 100‑pin TQFP packages, electrical characteristics, timing diagrams and command descriptions needed for hardware designers and firmware developers.
| Operating voltage (VDD) | 4.5 V to 5.5 V |
|---|---|
| Operating temperature range (Ta) | -40 °C to 80 °C |
| Maximum clock frequency | 32 MHz |
| Audio input sample rate | 6.944 kHz |
| Voice‑recognition sample rate | 10 kHz |
| Recognition latency | 200 ms |
| ADPCM speech compression | 28 kbps |
| Package options | 84‑pin PLCC or 100‑pin TQFP |
| Maximum speaker‑dependent vocabulary size | 61 words per vocabulary |
The processor can store up to 61 words per speaker‑dependent vocabulary.
It operates with a supply voltage (VDD) between 4.5 V and 5.5 V.
It is offered in an 84‑pin PLCC package and a 100‑pin TQFP package.
Recognition latency is typically 200 milliseconds.