LC786821E Datasheet, PDF (2/35 Pages) ON Semiconductor – Compressed Audio Signal Processor IC

LC786821E
■ Detail Functions
[ Compressed audio functions ]
<Audio processing block>
 MP3 decode (ISO/IEC 11172-3, ISO/IEC 13818-3)
Supported sampling rate : MPEG1-Layer1/2/3 (32kHz, 44.1kHz, 48kHz)
MPEG2-Layer1/2/3 (16kHz, 22.05kHz, 24kHz)
MPEG2.5-Layer3 ( 8kHz, 11.025kHz, 12kHz)
Supported bit rate
: All Bit Rate (Variable Bit Rate support)
MPEG header read supported
 WMA decode (Version 9.2 standard)
Supported sampling rate : 8kHz to 48kHz
Supported bit rate
: 5kbps to 384kbps (Variable Bit Rate support)
 AAC decode (ISO/IEC 14496-3, ISO/IEC 13818-7)
Profile
: MPEG4-AAC-LowComplexity
Supported sampling rate : 8kHz to 48kHz
Supported bit rate
: Monaural 8kbps to 160kbps (Variable bit rate support)
Stereo 16kbps to 320kbps (Variable bit rate support)
* Depending on the condition, sampling rate can be supported up to 96kHz.
 FLAC decode (FLAC 1.3.0)
Supported format
: Block size: up to 4608
Quantized number of bits: 8/16/24 bit per sample
Supported sampling rate : 8kHz to 48kHz
Supported channel
: 1/2ch
 SBC decode (Bluetooth A2DP Ver1.2)
Supported format
: Block length: 4/8/12/16, Sub-band : 4/8, SNR/Loudness
Supported sampling rate : 16kHz, 32kHz, 44.1kHz and 48kHz
Supported bit rate
: up to 512kbps
 modifiedSBC (mSBC)
Capable of voice processing with WBS (WideBandSpeech): Fx=16kHz by supporting the mSBC
encode/decode function
[ Audio processing functions ]
<Audio data digital processing block>
 Equalizer function
Supports max of 20-band (stereo 1ch) and unused band can be used for not only the voice output but also
used for other processing
 Supports signal processing for subwoofer
 Sampling conversion (Fs=32/44.1/48kHz) when playing compressed audio, High band extended
processing supported
 Mute (/12dB), attenuator
 De-emphasis filter
 Embedded level/peak hold circuit and can hold up to 8 data
 Noise cancel/Echo cancel function
Supports noise cancel/echo cancel at Fs=8kHz
 Supports input/output of Fs=16kHz voice data
<Audio input processing block>
 Analog Audio data input (3-channels by stereo)
Single Ended input
: 2 channels
Differential input
: 1 channel
Input Gain
: 12.5dB to +18.5dB (1dB step)
24bit accuracy AD converter
 Digital audio input (Stereo input: Max of 3 channels)
Supports digital 3-line (LR clock, bit clock, audio data) connection and clock can be master or slave
Data format supports IIS/MSB first right justified and etc.
Input data can support 8kHz to 96kHz, and by sampling conversion, converts to the suitable Fs
(Playback Fs=32/44.1/48kHz etc.)
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