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Digital NICAM/A2/EIA-J Decoder
| The AK4141 is a NICAM/A2/EIA-J stereo decoder, which is optimized for Digital TV application. The AK4141 achieves no alignment, few external components and high audio performance by digital stereo decoding architecture. The AK4141 integrates a stereo sample rate converter (SRC) for asynchronous digital audio sources such as HDMI, digital tuner, digital switches and sound processing functions such as 5-band equalizers. The AK4141 supports major audio data formats (MSB/LSB justified, I2S and TDM) to interface with DSP, ADC, DAC. Therefore, the AK4141 is suitable for the AV systems such as Digital TV and DVR. |
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Features
- Applications: Digital TVs, Set Top Boxes, Digital Video Recorders
- Stereo Decoding
- Capable of receiving Sound Intermediate Frequency (SIF) with Selector and FM Demodulation
- Automatic Gain Control (AGC: 100mVpp ~ 1Vpp) for SIF input
- Alignment Free Digital Stereo Decoding
- EIA-J
- NICAM: B/G, L, I, D/K with FM/AM Mono
- A2: B/G, D/K1, D/K2, D/K3, M/N
- Automatic/Manual Stereo Decoding Standard Selection
- Automatic/Manual Audio Mode (Stereo/MONO/two sounds) Selection
- Signal Quality Detection for Auto Selection Mode
- High FM Deviation Option (max: 540kHz)
- I2S sampling rate (fs): 32k/44.1k/48kHz
- Audio Processing (Two Stereos)
- Automatic Level Control (ALC)
- Balance
- 5-band Equalizer
- Stereo Separation Emphasis
- Digital Volume Control with Soft Mute (+12dB~-115dB, 0.5dB/step)
- Audio Data Interface:
- I2S input x 5 (2 inputs: SRC available)
- I2S output x 3
- Master/Slave Mode
- Audio Format: 24bit Left justified /Right justified / I2S or TDM
- Asynchronous Sample Rate Converter (SRC)
- Input Sample Rate: 8k~192kHz
- fso/fsi: 1/6~6
- Digital Audio Interface Transmitter (DIT) with Through Mode
- Integrated X'tal Oscillator
- Master Clock: 256fs/384fs/512fs/768fs/1024fs
- I2C-bus Control Interface
- Power Supply: 1.8V±0.1V, 3.3V±0.3V
- Ta: -20 ~ 85 ° C
- Package: 48pin LQFP
- Evaluation Board: AKD4141
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AK4141 BLOCK DIAGRAM
Data Sheet PDF
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Data Sheets
Rev. MS0952-E-00 2008/05
PDF : 846KB / 96pages
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Evalution Board Manual
Rev. KM088102 2007/11
PDF : 1911KB / 32pages |
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