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LC78684E Arkusz danych(PDF) 1 Page - Sanyo Semicon Device |
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LC78684E Arkusz danych(HTML) 1 Page - Sanyo Semicon Device |
1 / 21 page 20703RM(OT) No.7350-1/21 Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. CMOS IC Overview The LC78684E integrates, on a single chip, CD-ROM signal-processing functions, MP3 signal-processing func- tions, and CD-DA shockproof signal-processing functions. The LC78684E achieves significant power savings by implementing signal-processing functions using hard- wired structures. A CD player that supports playback of MPEG audio (MP3) recorded on CD media as well as CD-DA shockproof playback can be implemented by combining this IC with a CD DSP, DRAM, and audio D/A converter, and other circuits. Features MP3 Decoding Functions (MPEG audio standard [ISO/IEC 11172-3] layer 3) Decodes to a digital audio signal MP3 data decoded by the CD-ROM decoder and outputs that audio signal. Supports all bit rates, including variable bit rate operation. Supports the following sampling rates. MPEG1 (Fs = 32 K, 44.1 K, 48 K) MPEG2 (Fs = 16 K, 22.05 K, 24 K) MPEG2.5 (Fs = 8 K, 11.025 K, 12 K) Can read out the MPEG header and ancillary data. Automatically mutes the signal on CRC errors using an MP3 CRC check function. External MPEG serial data input function supports memory card playback. CD-ROM Decoding Functions Supports CD-ROM modes 1 and 2 (forms 1 and 2) Faithfully reproduces data stored on CD-ROM discs using CD-ROM error correction functions. Header and sector management Supports playback speeds up to 4×. In addition to data buffering also supports C2 error flag buffering. Provides external serial output of decoded CD-ROM data. CD-DA Playback Functions (Shockproof support) Shockproof operation for about 180 seconds (com- pressed mode) when 64M DRAM is used. Shockproof function supports compressed, uncom- pressed, and data through modes. VCEC (variable speed) supports up to 4×-speed play- back. Audio Signal Processing Serial audio signal output using LRCK, BCK, and DATA signals. (I²S format, either 16-bit or 20-bit precision PCM output, data-slot supports 16-bit, 24-bit, and 32-bit modes) Digital bass boost function (4 modes), attenuator function, and muting ( , 12 dB) Provides a base clock (384 fs) output pin for use with external digital filters and D/A converters. DRAM Interface Supports the use of from 1M to 64M of external DRAM (EDO, 2CAS, 16-bit data bus memory) Supports allocation of a user area in DRAM during CD-ROM (MP3) playback. Continued on next page. MP3 Decoder for Compact Disc Players LC78684E Ordering number : ENN7350 |
Podobny numer części - LC78684E |
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Podobny opis - LC78684E |
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