AK7735 DSP Datasheet

AK7735 Datasheet, PDF, Equivalent


Part Number

AK7735

Description

Dual DSP

Manufacture

AKM

Total Page 30 Pages
Datasheet
Download AK7735 Datasheet


AK7735
[AK7735]
AK7735
Dual DSP with 4chADC + 4chDAC + 4chSRC
1. General Description
The AK7735 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, two 32-bit stereo DACs, 2 stereo sampling rate
convertors supporting the sampling frequency up to 192kHz and dual DSPs for Audio/HF process. Each
DSP has 3072step/fs (when fs=48kHz) parallel processing power. As the AK7735 is a RAM based DSP,
it is freely programmable for user requirements, such as acoustic effects and proprietary high
performance hands-free function. The AK7735 is available in a 48-pin LQFP package.
2. Features
Dual DSP: (DSP1 and DSP2 have the same specification. Memory areas are shared by them)
- Word length:
28-bit (Simple floating point supported)
- Instruction cycle:
- Multiplier:
- Divider:
Max. 6.8ns (3072fs 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:
4096-word x 36-bit
- Coefficient RAM:
6144-word x 24-bit
- Data RAM:
4096-word x 28-bit
- Delay RAM:
12288-word x 28-bit
- JX pins (Interrupt)
- Independent Power Management Function for DSP1, DSP2
ADC1: 24-bit Stereo ADC with MIC Gain Amplifiers
- Sampling Frequency: fs = 8kHz ~ 192kHz
- Channel Independent Analog Gain Amplifiers (0~18dB(2dB Step), 18~36dB(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 (24dB-103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- Low Noise MIC Power Output: 1ch
- 4 types of Digital Filter for Sound Color Selection
ADC2: 24-bit Stereo ADC with Input Selector
- Sampling Frequency: fs = 8kHz ~ 192kHz
- Analog Input Selector: Differential Input x1 or Single-ended Input x2,
- ADC Characteristics S/N: 106dB (fs=48kHz, Differential Input)
- Channel Independent Digital Volume (24dB ~ -103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- 4 types of Digital Filter for Sound Color Selection
016014707-E-00
-1-
2016/12

AK7735
[AK7735]
DAC: Advanced 32bit DAC
- 2ch x 2
- Sampling Frequency: fs = 8kHz ~ 192kHz
- Single-ended Output
- DAC Characteristics S/N: 108dB (fs=48kHz)
-Channel Independent Digital Volume Control (12dB ~ -115dB, 0.5dB Step, Mute)
- 4 types of Digital Filter for Sound Color Selection
SRC:
- 2ch x 2
- FSI = 8kHz ~ 192kHz, FSO = 8kHz ~ 192kHz (FSO/FSI = 0.167 ~ 6.0)
Digital Interfaces
- Digital Input Port x 4 (Max 32ch, in TDM mode)
- Digital Output Port x 4 (Max 32ch, in TDM mode)
- Independent LRCK/BICK port x 3
- Data Format: MSB 32, 24bit / LSB 24, 20, 16bit / I2S
- PCM Short / Long Frame Supported
- TDM Format Supported (Max:8ch / 256fs, fs=96kHz)
PLL Circuit
μP Interface: SPI(Max 6MHz) / I2C(400kHz Fast Mode, 1MHz Fast Mode Plus)
Power Supply:
Analog: AVDD: 3.0V ~ 3.6V (Typ. 3.3V)
Digital: LVDD: 3.0V ~ 3.6V (Typ. 3.3V) (3.3V → 1.2V regulator integrated)
I/F VDD33: 3.0V ~ 3.6V (Typ. 3.3V)
TVDD: 1.7V ~ 3.6V (Typ. 3.3V)
Operating Temperature Range:
AK7735VQ: Ta = -40 ~ 85C
AK7735EQ: Ta = -20 ~ 85C
Package: 48-pin LQFP (7mm x 7mm, 0.5mm pitch)
016014707-E-00
-2-
2016/12


Features [AK7735] AK7735 Dual DSP with 4chADC + 4chDAC + 4chSRC 1. General Description The AK7735 is a highly integrated digit al signal processor, including a 24-bit stereo ADC with MIC gain amplifiers, a 24-bit stereo ADC with input selector, two 32-bit stereo DACs, 2 stereo sampl ing rate convertors supporting the samp ling frequency up to 192kHz and dual DS Ps for Audio/HF process. Each DSP has 3 072step/fs (when fs=48kHz) parallel pro cessing power. As the AK7735 is a RAM b ased DSP, it is freely programmable for user requirements, such as acoustic ef fects and proprietary high performance hands-free function. The AK7735 is avai lable in a 48-pin LQFP package. 2. Fea tures □ Dual DSP: (DSP1 and DSP2 hav e the same specification. Memory areas are shared by them) - Word length: 28 -bit (Simple floating point supported) - Instruction cycle: - Multiplier: - D ivider: Max. 6.8ns (3072fs at fs=48kHz ) 24 x 24 → 48-bit (Double precision arithmetic available) 24 / 24 → 24-bit (Floating point normalizatio.
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