LC78684E Datasheet | SANYO

.. Ordering number : ENN7350 CMOS IC MP3 Decoder for pact Disc Players Overview The LC78684E integrates, on a single chip, CD-ROM signal-processing functions, MP3 signal-processing functions, and CD-DA shockproof signal-processing functions. The LC78684E achieves significant power savings by implementing signal-processing functions using hardwired 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 bining this IC with a CD DSP, DRAM, and audio D/A converter, and other circuits. x 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. x CD-DA Playback Functions (Shockproof support) Shockproof operation for about 180 seconds (pressed mode) when 64M DRAM is used. Shockproof function supports pressed, unpressed, and data through modes. VCEC (variable speed) supports up to 4×-speed playback. x 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 (f, 12 d B) Provides a base clock (384 fs) output pin for use with external digital filters and D/A converters. x 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. Features x 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...