TDA7553 데이터 시트보기 (PDF) - STMicroelectronics

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TDA7553

DIGITAL SIGNAL PROCESSING IC FOR SPEECH AND AUDIO APPLICATIONS

STMicroelectronics 

TDA7550R - TDA7550 - TDA7551 - TDA7552 - TDA7553

TDA7552

TTS3000 Text-To-Speech solution

The TDA7551 is part of a two-chip solution for Text-To-Speech, featuring the Lernout & Hauspie

TTS3000 engine. Two devices are needed:

• A 16-bit microcontroller (ST10) for string analysis and conversion

• The TDA7552 DSP for voice synthesis.

An external application sends ASCII strings to the microcontroller, which perform an analysis of the entire

sentence; language-dependent data is needed on the FLASH accessed by the ST10. As a result of the

analysis, a data stream is sent through I2C to the TDS7552 DSP. No external memory is required by the

DSP. The software running on the TDA7552 DSP is independent from languages.

Control through I2C

Management of the DSP is accomplished through an I2C protocol: the

TDA7552 appears as a slave i2c device.

Many languages available

The following languages are available:

US English, French, German, Italian, Spanish, Japanese. Other

languages available on request.

Sample rate:

11.025 kHz

Figure 3.

ASCII string

ST10

microcontroller I2C

audio amp

TDA7552

language-

dependent

code

FLASH

bank

language-independent code

10/12

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