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HUB CODEC. AK4601 Datasheet |
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[AK4601]
AK4601
Audio HUB CODEC with Digital Mixer
1. General Description
The AK4601 is an Audio HUB CODEC including 5ch ADC, 6ch DAC and digital mixers. The analog input
block consists of a 24-bit stereo ADC, a 24-bit stereo ADC with input selector and a monaural ADC, and
the analog output block consists of 32-bit 6ch DAC. The transfer block for digital signals integrates a
serial interface that supports Data BUS and TDM format, realizing an audio HUB function. It gives
scalability to the device for both analog and digital signals.
A car audio system that is capable of processing both sound and voice such as for hands-free function
simultaneously can be realized by using the AK4601 with AKM’s multi-core DSP, the AK7707. The
AK4601 is available in a space saving 48-pin LQFP package.
2. Features
□ ADC1: 24-bit Stereo ADC with MIC Gain Amplifiers
- Sampling Frequency: fs=8kHz to 192kHz
- Channel Independent Analog Gain Amplifiers
(0 to 18dB(2dB Step), 18 to 36dB(3dB step))
- Differential Input or Single-ended Input
- ADC Characteristics S/N: 106dB (fs=48kHz, Differential Input, MIC Gain=0dB,)
- Channel Independent Digital Volume Control (+24 to -103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- Low Noise MIC Power Output: 2ch
- 4 types of Digital Filter for Sound Color Selection
□ ADC2: 24-bit Stereo ADC with Input Selector
- Sampling Frequency: fs=8kHz to 192kHz
- Analog Input Selector: Differential Input x1 or Single-ended Input x2,
Semi-Differential Input x1
- ADC Characteristics S/N: 106dB (fs=48kHz, Differential Input)
- Channel Independent Digital Volume (+24 to -103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- 4 types of Digital Filter for Sound Color Selection
□ ADCM: 24-bit Monaural ADC
- Sampling Frequency: fs=8kHz to 192kHz
- Differential Input or Single-ended Input
- ADC Characteristics S/N: 106dB (fs=48kHz, Differential Input)
- Channel Independent Digital Volume (+24 to -103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- 4 types of Digital Filter for Sound Color Selection
□ DAC: Advanced 32-bit DAC
- 2ch x3
- Sampling Frequency: fs=8kHz to 192kHz
- Single-ended Output
- DAC Characteristics S/N: 108dB (fs=48kHz)
- Channel Independent Digital Volume Control (+12 to -115dB, 0.5dB Step, Mute)
- 4 types of Digital Filter for Sound Color Selection
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[AK4601]
□ Digital Interface:
- Digital Input Port: max 20ch(16ch x 1Port, 2ch x 2Port) when TDM mode
- Digital Output Port: max 20ch(16ch x 1Port, 2ch x 2Port) when TDM mode
- Independent LRCK/BICK Input port x 2 Lines
- Data Format: MSB 32,24-bit / LSB 24,20,16-bit / I2S
- PCM Short / Long Frame Supported
- TDM Format Supported
□ Digital Mixer Circuit
□ Independent Digital Volume (+12 to -115dB, 0.5dB Step, Mute)
□ PLL Circuit
□ μP Interface: SPI(7MHz max), I2C-bus (max 1MHz, Fast Mode Plus)
□ Power Supply:
- Analog AVDD: 3.0 to 3.6V (typ. 3.3V)
- Digital LVDD: 3.0 to 3.6V (typ. 3.3V) (3.3V → 1.2V regulator integrated)
- I/F TVDD: 1.7 to 3.6V (typ. 3.3V)
□ Operating Temperature Range: -40°C to 85°C
□ Package: 48-pin LQFP (7mm x 7mm, 0.5mm pitch)
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[AK4601]
3. Table of Contents
1. General Description.............................................................................................................................. 1
2. Features................................................................................................................................................ 1
3. Table of Contents ................................................................................................................................. 3
4. Block Diagram and Functions .............................................................................................................. 4
■ Device Block Diagram....................................................................................................................... 4
5. Pin Configuration and Functions .......................................................................................................... 5
■ Pin Layout ......................................................................................................................................... 5
■ Pin Functions..................................................................................................................................... 6
■ Handling of Unused Pins................................................................................................................... 8
■ Pull-down Pin Statuses ..................................................................................................................... 9
■ Power-down Status of Output Pins ................................................................................................. 10
6. Absolute Maximum Ratings................................................................................................................ 11
7. Recommended Operating Conditions ................................................................................................ 11
8. Electrical Characteristics .................................................................................................................... 12
■ Analog Characteristics .................................................................................................................... 12
■ Power Consumption........................................................................................................................ 18
9. Digital Filter Characteristics................................................................................................................ 19
10. DC Characteristics.............................................................................................................................. 27
■ DC Characteristics .......................................................................................................................... 27
11. Switching Characteristics ................................................................................................................... 28
12. Functional Descriptions ...................................................................................................................... 35
■ System Clock .................................................................................................................................. 35
■ Data Path Setting ............................................................................................................................ 45
■ Power-up Sequence........................................................................................................................ 64
■ LDO (Internal Circuit Drive Regulator) ............................................................................................ 65
■ Power-down and Reset................................................................................................................... 65
■ STO Bit Status................................................................................................................................. 67
■ μP Interface Setting and Pin Status................................................................................................ 67
■ I2C Bus Interface (CSN = “H”)......................................................................................................... 69
■ Mixer................................................................................................................................................ 73
■ Vol ................................................................................................................................................... 74
■ Analog Input Blcok .......................................................................................................................... 76
■ ADC Block (ADC1, ADC2, ADCM) ................................................................................................. 78
■ DAC Block (DAC1, DAC2 and DAC3) ............................................................................................ 82
■ Register Map ................................................................................................................................... 86
■ Register Definitions ......................................................................................................................... 89
13. Recommended External Circuits...................................................................................................... 104
■ Connection Diagram ..................................................................................................................... 104
■ Peripheral Circuit........................................................................................................................... 106
14. Package............................................................................................................................................ 108
■ Outline Dimensions ....................................................................................................................... 108
■ Material and Lead Finish............................................................................................................... 108
■ Marking.......................................................................................................................................... 109
15. Ordering Guide ................................................................................................................................. 109
■ Ordering Guide.............................................................................................................................. 109
16. Revision History................................................................................................................................ 110
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