Multi DSP. AK7738 Datasheet

AK7738 DSP. Datasheet pdf. Equivalent


AKM AK7738
[AK7738]
AK7738
Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC
1. General Description
The AK7738 is a highly integrated digital signal processor, including a 24-bit stereo ADC with MIC gain
amplifiers, a 24-bit stereo ADC with input selector, a monaural ADC, two 32-bit stereo DACs, 4 stereo
sampling rate convertors supporting the sampling frequency up to 192kHz, two DSPs and a Sub DSP for
Audio/HF process. Each two DSPs and a Sub DSP has 2560step/fs (when fs=48kHz) parallel processing
power. The AK7738 is capable of processing sound and voice such as for hands-free function simultaneously
because two DSPs are able to work on different but synchronized sampling frequencies. As the AK7738 is a
RAM based DSP, it is freely programmable for user requirements, such as acoustic effects and proprietary
high performance hands-free function. The AK7738 is available in a 64-pin LQFP package.
2. Features
DSP1/DSP2: (Memory areas are shared by DSP1 and DSP2)
- Word length:
28-bit (Simple floating point supported)
- Instruction cycle:
- Multiplier:
8.1ns (2560fs at fs=48kHz)
24 x 24 → 48-bit (Double precision arithmetic available)
- Divider:
24 / 24 → 24-bit (Floating point normalization function)
- ALU:
52-bit arithmetic operation (with 4bits overflow margin)
- Program RAM:
8192 word x 36-bit
- Coefficient RAM:
6144 word x 24-bit
- Data RAM:
6144 word x 28-bit
- Delay RAM:
20480 word x 28-bit
- JX pins (Interrupt)
- Clock Mode Selector for DSP1, DSP2
- Independent Power Management Function for DSP1, DSP2
Sub DSP
- Word length:
28-bit (Simple floating point supported)
- Instruction cycle:
- Multiplier:
- Divider:
8.1ns (2560fs at fs=48kHz)
24 x 24 → 48-bit (Double precision arithmetic available)
24 / 24 → 24-bit (Floating point normalization function)
- ALU:
52-bit arithmetic operation (with 4bits overflow margin)
- Program RAM:
1024 word x 36-bit
- Coefficient RAM:
2048 word x 24-bit
- Data RAM:
4096 word x 28-bit
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: 102dB (fs=48kHz, Differential Input, MIC Gain=0dB,)
- Channel Independent Digital Volume Control (+24 to -103dB, 0.5dB Step, Mute)
- Analog DRC (Dynamic Range Control)
- Digital HPF for DC Offset Cancelling
- Low Noise MIC Power Output: 2ch
- 4 types of Digital Filter for Sound Color Selection
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AK7738 Datasheet
Recommendation AK7738 Datasheet
Part AK7738
Description Multi DSP
Feature AK7738; [AK7738] AK7738 Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC 1. General Description The AK7738 is a .
Manufacture AKM
Datasheet
Download AK7738 Datasheet




AKM AK7738
[AK7738]
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: 102dB (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: 102dB (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 x2
- 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
SRC:
- 2ch x4
- FSI = 8kHz to 192kHz, FSO = 8kHz to 192kHz (FSO/FSI = 0.167 to 6.0)
FSCONV: Monaural Simple SRC
- 1ch x2
- FSI = 44.1kHz to 48kHz, FSO = 8kHz to 16kHz (FSO/FSI = 0.167 to 0.363)
DIT:
- S/PDIF, IEC60958, AES/EBU, EIAJ CP1201 Compatible
- 24-bit Stereo Output
Digital Interface:
- Digital Input Port: max 24ch when TDM mode
- Digital Output Port: max 28ch when TDM mode
- Independent LRCK/BICK Input port x 5 Lines
- Data Format: MSB 32,24-bit / LSB 24,20,16-bit / I2S
- PCM Short / Long Frame Supported
- TDM Format Supported
Digital Mixer Circuit
PLL Circuit
μP Interface: SPI(7MHz max), I2C-bus (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 VDD33: 3.0 to 3.6V (typ. 3.3V)
TVDD1: 1.7 to 3.6V (typ. 3.3V)
TVDD2: 1.7 to 3.6V (typ. 3.3V)
Operating Temperature Range: -40C to 85C
Package: 64-pin LQFP (10mm x 10mm, 0.5mm pitch)
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AKM AK7738
[AK7738]
3. Table of Contents
1. General Description......................................................................................................................................... 1
2. Features ........................................................................................................................................................... 1
3. Table of Contents ............................................................................................................................................ 3
4. Block Diagram and Functions ......................................................................................................................... 4
Block Diagram..........................................................................................................................................4
DSP1 Block Diagram ...............................................................................................................................5
DSP2 Block Diagram ...............................................................................................................................6
Sub DSP Block Diagram ..........................................................................................................................7
5. Pin Configurations and Functions ................................................................................................................... 8
Ordering Guide.........................................................................................................................................8
Pin Layout ................................................................................................................................................8
Pin Functions ............................................................................................................................................9
Handling of Unused Pins........................................................................................................................12
Internal Pulled-down Pin Status .............................................................................................................12
Power-down Status of Output Pins.........................................................................................................13
Relationship between Power Supplies and Digital Pins .........................................................................13
6. Absolute Maximum Ratings.......................................................................................................................... 14
7. Recommended Operating Conditions............................................................................................................ 14
8. Electrical Characteristics ............................................................................................................................... 15
Analog Characteristics............................................................................................................................15
Power Consumption ...............................................................................................................................20
9. Digital Filter Characteristics.......................................................................................................................... 21
10. DC Characteristics......................................................................................................................................... 31
DC Characteristics..................................................................................................................................31
11. Switching Characteristics .............................................................................................................................. 32
12. Package.......................................................................................................................................................... 40
Outline Dimensions ................................................................................................................................40
Material and Lead Finish........................................................................................................................40
Marking ..................................................................................................................................................41
13. Revision History............................................................................................................................................ 41
IMPORTANT NOTICE ...................................................................................................................................... 42
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