AK4671_10 Datasheet, PDF (1/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
AK4671
Stereo CODEC with MIC/RCV/HP-AMP
GENERAL DESCRIPTION
The AK4671 is a stereo CODEC with a built-in Microphone-Amplifier, Receiver-Amplifier and
Headphone-Amplifier. The AK4671 features dual PCM I/F in addition to audio I/F that allows easy
interfacing in mobile phone designs with Bluetooth I/F. The AK4671 is available in a 57pin BGA, utilizing
less board space than competitive offerings.
FEATURES
1. Recording Function (Stereo CODEC)
• 4 Stereo Input Selector x 2ch
• 4 Stereo Inputs (Single-ended) or 2 Stereo Input (Full-differential)
• MIC Amplifier: +30dB ∼ −12dB, 3dB step
• Digital ALC (Automatic Level Control): +36dB ∼ −54dB, 0.375dB Step, Mute
• Wind-noise Reduction Filter
• Stereo Separation Emphasis
• 5-band Programmable Notch Filter
• Audio Interface Format: 16bit MSB justified, I²S, DSP Mode
2. Playback Function (Stereo CODEC)
• Digital Volume (+12dB ∼ −115.0dB, 0.5dB Step, Mute)
• Digital ALC (Automatic Level Control): +36dB ∼ −54dB, 0.375dB Step, Mute
• Stereo Separation Emphasis
• 5-band EQ
• Stereo Line Output
• Mono Receiver-Amp
- BTL Output
- Output Power: 30mW@32Ω (AVDD=3.3V)
• Stereo Headphone-Amp
- Output Power: 30mW@16Ω (AVDD=3.3V)
• Analog Mixing: 4 Stereo Input
• Audio Interface Format:
- 16bit MSB justified, 16bit LSB justified, 16-24bit I²S, DSP Mode
3. Dual PCM I/F for Baseband & Bluetooth Interface
• Sample Rate Converter (Up sample: up to x6: Down sample: down to x1/6)
• Sample Rate: 8kHz
• Digital Volume
• Audio Interface Format:
- 16bit Linear, 8bit A-law, 8bit μ-law
- Short/Long Frame, I²S, MSB justified
4. 10bit SAR ADC
• 3 Input Selector
5. Power Management
6. Master Clock:
(1) PLL Mode
• Frequencies: 11.2896MHz, 12MHz, 12.288MHz, 13MHz, 13.5MHz, 19.2MHz,
24MHz, 26MHz, 27MHz (MCKI pin)
1fs (LRCK pin)
32fs or 64fs (BICK pin)
(2) External Clock Mode
• Frequencies: 256fs, 384fs, 512fs, 768fs or 1024fs (MCKI pin)
7. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs
8. Sampling Rate (Stereo CODEC):
MS0666-E-02
-1-
2010/06