Features: • SI recognition
- Up to 20 - 25 words in each vocabulary
- Multiple vocabulary support
• SD recognition
- Up to 61 words in each vocabulary
- Multiple vocabulary support
• Speech synthesis
- Up to 2.3-sec internal and 27.6-sec external speech synthesis on-chip; sample looping and concatenation allows even longer phrases.
- On-chip controller for MSM665x speech synthesizer
- Standard beep tone outputs
- Pulse code modualation (PCM) and adaptive differential pulse code modualation (ADPCM) voice or soundeffect output
• Speech capture and playback
- 28-kbps ADPCM speech compression
• Serial ASCII command interface
• 6944-Hz audio input sample rate for record and playback
• 10-kHz sample rate for voice recognition
• 200-msec recognition latency
• Flexible memory mapping for EPROM,FLASH, and SRAM
• 32-MHz operation
• Packages: 84-pin PLCC (QFJ84-P-S115) or 100-pin TQFP (TQFP100-P-1414-0.50-K)
Pinout
Specifications
|
Parameter |
Symbol |
Condition |
Rating |
Unit |
| Digital power supply voltage |
VDD |
GND = AGND = 0 V
|
0.3 to +7 |
V
|
| Input Voltage |
VI |
0.3 to VDD +0.3 |
| Output voltage |
VO |
0.3 to VDD +0.3 |
| Analog power voltage |
AVDD |
0.3 to VDD +0.3 |
| Analog reference voltage |
VREF |
0.3 to AVDD +0.3 |
| Analog input voltage |
VAI |
0.3 to VREF |
| Power dissipation |
PD |
Ta = 85°C per package |
1300max. |
mW |
|
Ta = 85°C per output |
50max. |
| Storage Temperature |
TSTG |
- |
50 to +150 |
°C |
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.Functional operation should be restricted to the conditions as detailed elsewhere in this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.DescriptionThe MSM6679A-110 Voice Recognition Processor (VRP) is a slave-mode device that performs five func-tions: speaker-independent (SI) voice recognition, speaker-dependent (SD) voice recognition, solid-state sound recording, sound playback, and speech synthesis. The highly integrated device also provides an on-chip memory controller, Flash memory interface, analog data conversion, Oki speech synthesizer interface, and pulse width modulation (PWM) sound output.
For SI recognition, the MSM6679A-110 contains a vocabulary template in external memory.Pretrained SI vocabularies eliminate the need for laborious training, as usually required by SD products. The memory requirements are dependent on the size of the vocabulary. The MSM6679A-110 can tolerate background noise, while providing high recognition accuracy. In its designated operating environment, the device achieves a typical recognition accuracy of >95% (using an Oki-defined test procedure).
For SD recognition, the MSM6679A-110 stores SD vocabulary templates, as defined by the user,in external SRAM. The MSM6679A-110 can create SD vocabularies of up to 61 words each, with each word using approximately 50 bytes.In addition to providing voice recognition capabilities, the MSM6679A-110 integrates a solidstate recorder/player, speech synthesis functions, and a tone generator. ADPCM recording/playback provides high quality sound and efficient memory utilization. The MSM6679A-110 can respond to spoken com-mands, verbally or with tones, via an on-chip speech synthesizer and tone generator. For larger speech-synthesis requirements, the MSM6679A-110 also provides a glueless MSM665x control interface for off-chip speech synthesis.
The MSM6679A-110 can interface to any application or personal computer via a serial interface through an open, device-independent serial mode API (SMAPI). To accelerate code development, Oki supplies an evaluation kit, and assembly and C language programs for this product.
MSM6679A-110 Data Sheet
