AK4141 Decoder Datasheet

AK4141 Datasheet PDF, Equivalent


Part Number

AK4141

Description

NICAM/A2/EIA-J Digital Stereo Decoder

Manufacture

Asahi Kasei Microsystems

Total Page 19 Pages
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Download AK4141 Datasheet PDF


AK4141
[AK4141]
= Preliminary =
AK4141
NICAM/A2/EIA-J Digital Stereo Decoder
GENERAL DESCRIPTION
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.
FEATURES
1. 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
2. Audio Processing (Two Stereos)
† Automatic Level Control (ALC)
† Balance
† 5-band Equalizer
† Stereo Separation Emphasis
www.DataSheet4U.com
† 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
3. Asynchronous Sample Rate Converter (SRC)
† Input Sample Rate: 8k~192kHz
† fso/fsi: 1/6~6
4. Digital Audio Interface Transmitter (DIT) with Through Mode
5. Integrated X’tal Oscillator
6. Master Clock: 256fs/384fs/512fs/768fs/1024fs
7. I2C-bus Control Interface
8. Power Supply: 1.8V±0.1V, 3.3V±0.3V
9. Ta: -20 ~ 85°C
10. Package: 48pin LQFP
Rev. 0.3-PB
-1-
2008/01

AK4141
[AK4141]
VCOM LFLT1 LFLT2 AVDD2 GND5 AVDD1 GND3 GND4 LRCK SCLK DVDD GND1 TVDD GND2
VREFH
VREFL
SIF1
SIF2
SDTI1
SDTI2
SDTI3
LRCK4
SCLK4
SDTI4
LRCK5
SCLK5
SDTI5
AGC
ADC
(SIF)
FM Demod &
Stereo Decode
EIAJ
NICAM
A2
Decoder
Prescale
Prescale
1/2/3/4 Switch
Matrix
SRC
SRC
Prescale
DIT
ALC, Vol1
Balance1
Bass/Tre1
3D
ALC, Vol2
Balance2
Bass/Tre2
3D
TXOUT
TXIN
SDTO1
SDTO2
SDTO3
X’tal Osc PLL
Clock Gen
Control
Register
MCLKI XTI XTO MCKO CAD0 CAD1 SCL SDA INT PDN 6M5 4M50 4M51 4M52 MSN IIS
www.DataSheet4U.com
Rev. 0.3-PB
-2-
2008/01


Features [AK4141] = Preliminary = AK4141 NICAM /A2/EIA-J Digital Stereo Decoder GENERA L DESCRIPTION The AK4141 is a NICAM/A2/ EIA-J stereo decoder, which is optimize d for Digital TV application. The AK414 1 achieves no alignment, few external c omponents and high audio performance by digital stereo decoding architecture. The AK4141 integrates a stereo sample r ate converter (SRC) for asynchronous di gital audio sources such as HDMI, digit al tuner, digital switches and sound pr ocessing functions such as 5-band equal izers. The AK4141 supports major audio data formats (MSB/LSB justified, I2S an d TDM) to interface with DSP, ADC, DAC. Therefore, the AK4141 is suitable for the AV systems such as Digital TV and D VR. FEATURES 1. Stereo Decoding † Capa ble of receiving Sound Intermediate Fre quency (SIF) with Selector and FM Demod ulation † Automatic Gain Control (AGC: 100mVpp ~ 1Vpp) for SIF input † Align ment 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, .
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