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Toshiba unveils new CD-MP3 processors for automotive apps

Posted: 19 Jan 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Toshiba America Electronic Components? CD-MP3? processor? TC94A70FG? TC94A73MFG?

Toshiba America Electronic Components Inc. recently announced two new high-performance CD-MP3 processors that enable playback of CD and multiple compressed audio formats from a single IC.

Targeted at car-audio as well as consumer-audio applications, the TC94A70FG and TC94A73MFG integrate all necessary CD and audio processing features plus 1Mb of SRAM and can decode up to four audio compression formats. The TC94A73MFG is a system-in-package version that adds electronic shock protection (ESP) to the feature set of TC94A70FG by incorporating built-in firmware and 16Mbit DRAM memory.

The new processors incorporate a CD servo and RF amplifier that control the CD spindle, pick-up head laser and motor driver, and amplify the RF signal generated from the reflection of the laser off the CD surface. A built-in CD DSP performs error correction and demodulation of the PCM/EFM signal while compressed audio content is decoded by a separate integrated audio DSP. The final audio signal can be output in digital I2S format or analog stereo from the built-in multi-bit DA converter, the company said.

Technical features common to both ICs include: CD servo and head RF amplifier with built-in DA converter; compressed audio decoder; benefits from extensive, growing decoder firmware library that includes MP3, Windows Media Audio 9, Adaptive TRansform Acoustic Coding CD, Advanced Audio Coding, graphic equalization and surround-field effects; 1Mb SRAM buffer with low standby current of 105A max; pin compatibility between the ESP (TC94A73MFG) and non-ESP (TC94A70FG) versions; programmable RAM for software customization; integrates one I2S input and three I2S outputs plus an S/PDIF connection; 6-line 4-bit parallel interface and a 4-line serial interface for direct connection to a microcontroller; housed in Pb-free 100-pin LQFP pin-compatible packages.

The TC94A70FG will be available widely in two standard ROM versions. The TC94A70FG-002 is capable of decoding MP3, WMA9 and ATRAC CD, while the TC94A70FG-005 is capable of decoding MP3, WMA9, ATRAC CD and AAC. Both are priced at $7 each in 10,000-piece quantities.

Likewise, the TC94A73MFG will be available widely in two standard ROM versions. The TC94A73MFG-201 is capable of decoding MP3 and WMA9, while also incorporating the above described ESP feature, while the TC94A73MFG-202 is capable of decoding MP3, WMA9, ATRAC CD and AAC in addition to including the ESP feature. These devices are priced at $9 each in 10,000-piece quantities.




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