AK7739VQ

Multi Core DSP with 4ch ADC, 4ch DAC, 12ch SRC

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Description

Advanced Audio Devices


AK7739VQThe AK7739 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, 4 stereo & 4 monaural sample rate converters (SRCs) supporting the sampling frequency up to 192kHz, a DIT, two DSPs and a Sub DSP for Audio/HF process. The DSP1 and the DSP2 have 6144step/fs (when fs=48kHz) parallel processing power. The AK7739 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 AK7739 is a RAM based DSP, it is freely programmable for user requirements, such as acoustic effects and proprietary high performance hands-free function. The AK7739 is available in a space saving 64-pin HTQFP package.

Key Features

□ Dual DSP (DSP1, DSP2): (Delay RAM areas are shared by DSP1 and DSP2)
 - Word Length: 37-bit (Data RAM: Simple floating point)
 - Operational Clock 294.912MHz (6144steps, fs= 48kHz)
 - Multiplier: 32 x 32 → 64-bit (Double precision arithmetic available)
 - Divider: 32 / 32 → 32-bit (Floating point normalization function)
 - ALU: 96-bit arithmetic operation (with overflow margin 32-bit)
 - Program RAM (PRAM): 10kword x 36-bit (DSP1), 8kword x 36-bit (DSP2)
 - Coefficient RAM (CRAM): 6kword x 32-bit (DSP1), 6kword x 32-bit (DSP2)
 - Data RAM (DRAM): 6kword x 37-bit (DSP1), 6kword x 37-bit (DSP2)
 - Delay RAM (DLRAM): 36kword x 37-bit (DSP1+DSP2 Total)
 - JX pins (Interrupt)
 - Independent Power Management Function for DSP1 and DSP2
□ Sub DSP (DSP3):
 - Word Length: 37-bit (Data RAM: Simple floating point supported)
 - Operational Clock 294.912MHz (6144steps, fs= 48kHz)
 - Multiple: 32 x 32 → 64-bit (Double precision arithmetic available)
 - Divider: 32 / 32 → 32-bit (Floating point normalization function)
 - ALU: 96-bit Arithmetic Operation (with overflow margin 32-bit)
 - Program RAM (PRAM): 2kword x 36-bit
 - Coefficient RAM (CRAM): 4kword x 32-bit
 - Data RAM (DRAM): 6kword x 37-bit
□ ADC1: 24-bit Stereo ADC with MIC Gain Amplifier
 - Sampling Frequency: fs=8kHz to 48kHz
 - Channel Independent Analog Gain Amplifiers (-3 to 30dB (3dB step))
 - Differential Input, Single-ended Input or Pseudo-differential Input
 - ADC Characteristics S/N: 95dB (fs=48kHz, Differential Input, MIC Gain = 0dB)
 - Channel Independent Digital Volume (+24 to -103dB, 0.5dB Step, Mute)
 - Digital HPF for DC Offset Cancelling
 - Low Noise MIC Power Output: 2ch
 - 5 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, Single-ended Input or Pseudo-differential 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
 - 5 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 (+12 to -115dB, 0.5dB Step, Mute)
 - 4 types of Digital Filter for Sound Color Selection
□ SRC
 - 2ch x 4 (Stereo) x 2
 - 1ch x 4ch (Monaural) or 2ch x 4ch (Stereo)
 - FSI = 8kHz ~ 192kHz, FSO= 8kHz ~ 192kHz (FSO/FSI= 0.167 ~ 6.0)
□ DIT
 - S/PDIF, IEC60958, AES/EBU, EIAJ CP1201 Compatible
□ Digital Interfaces
 - Digital Input Port 6 (Max. 96ch @Fs:48kHz TDM / 48ch @Fs:96kHz TDM)
 - Digital Output Port 6 (Max. 96ch @Fs:48kHz TDM / 48ch @Fs:96kHz TDM)
 - Independent LRCK/BICK Input/output Port x 5
 - Data Format: MSB 32, 24-bit/ LSB 24, 20, 16-bit/ I2S
 - Shot/ Long Frame Supported
 - TDM Input/Output Mode (Supported by all ports/ 512 mode x2)
 - Digital MIC Input Port (2ch x 1)
 - SPI Interface Master Controller
□ Digital Mixer Circuit (x2)
□ PLL Circuit
□ μP Interface: SPI (7MHz Max.) / I2C (400KHz Fast Mode)
□ Power Supply:
 Digital: VDD12: 1.14V ~ 1.3V (Typ. 1.2V)
 I/F: TVDD1: 1.7V ~ 3.6V (Typ. 3.3V)
 TVDD2: 1.7V ~ 3.6V (Typ. 3.3V)
 TVDD3: 1.7V ~ 3.6V (Typ. 3.3V)
 AVDD: 3.13V ~ 3.6V (Typ. 3.3V)
 PLLVDD: 3.13V ~ 3.6V (Typ. 3.3V)
□ Operating Temperature: Ta= -40 ~ 85ºC
□ Package: 64-pin HTQFP (10mm x 10mm, 0.5mm pitch)

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