Multi Core DSP with SRC

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AK7707VQThe AK7707 is a highly integrated digital signal processor, including 6 stereo sampling rate convertors supporting sampling frequency up to 192kHz, a DIR, a DIT and two types of DSPs for Audio and Voice processing. The DSP1 supports a 295MHz core and is optimized for C-language support. DSP2 and DSP3 have 4608 step/fs (when fs=48kHz) processing power. The AK7707 is able to process multiple sample rates simultaneously. This function is ideal for full bandwidth audio and voice processing, such as hands-free function along with audio. This simultaneous processing is enabled because the two types of DSPs can work on different but synchronized sampling frequencies. The AK7707 is a RAM based DSP, so it can be freely programmed for user requirements, such as acoustic effects and proprietary high performance hands-free function. The AK7707 is available in a space saving 64-pin HTQFP package.

Key Features

□ DSP1(Tensilica Hifi2):
-    Word Length:        64-bit
-    Operation Clock:        294.912MHz (DSP1 Fast Mode)
-    IRAM:            128KB
-    DRAM:            384KB
-    GPIO:            8 ports
-    SPI Control Master Port x 1
-    JTAG for On-chip Debugging
-    Independent Power Management
□ DSP2,3(AKM DSP):
-    Word Length:        28-bit (Data RAM: Simple floating point)
-    Operation Clock        221.184MHz (4608steps, fs= 48kHz, DSP2/3 Fast Mode)
-    Multiplier:        24 x 24 → 48-bit (Double precision arithmetic available)
-    Divider:            24 / 24 → 24-bit (Floating point normalization function)
-    ALU:            52-bit Arithmetic Operation (with overflow margin 4-bit)
-    Program RAM (PRAM):    10kword x 36-bit (DSP2+DSP3 Total)
-    Coefficient RAM (CRAM):    10kword x 24-bit (DSP2+DSP3 Total)
-    Data RAM (DRAM):    10kword x 28-bit (DSP2+DSP3 Total)
-    Delay RAM(DLRAM):    24kword x 28-bit (DSP2+DSP3 Total)
-    JX pins (Interrupt)
-    Independent Power Management Function
□ SRC:
-    2ch x 6
-    FSI = 8kHz ~ 192kHz, FSO= 8kHz ~ 192kHz (FSO/FSI= 0.167 ~ 6.0)
□ DIR:
-    S/PDIF, IEC60958, AES/EBU, EIAJ CP1201
-    Amplifier:        2 Inputs Selector
-    De-emphasis Filter (32, 44.1, 48, 96kHz, ON/OFF function)
-    Non-PCM Data Stream Detection Function
-    DTS-CD Data Stream Detection Function
-    Sampling Frequency Detection Function (32kHz, 44.1kHz, 48kHz, 88.2kHz 96kHz)
-    Unlock & Parity Error Detection Function
-    Validity Detection Register Read back Function
-    42-bit Channel Status Buffer
-    Q-sub code Buffer for CD bit stream
□ DIT:
-    S/PDIF, IEC60958, AES/EBU, EIAJ CP1201 Compatible
-    24-bit Stereo Output
□ Digital Interfaces:
-    Digital Input 8-Port (Max. 64ch, TDM mode)
-    Digital Output 8-Port (Max. 64ch, TDM mode)
-    Independent LRCK/BICK In/Output Port x 5 Lines
-    Data Format:    MSB 32, 24-bit/ LSB24, 20, 16-bit/ I2S
-    Shot/ Long Frame
-    TDM In/Output Mode
-    Digital Microphone Input Ports (2ch x 2 Lines)
□ Digital Mixer Circuit
□ PLL Circuit
□ µP Interface:       SPI (7MHz Max.) / I2C (1MHz Fast Mode plus)
□ Power Supply:
Digital:        VDD12:    1.14V ~ 1.3V (Typ. 1.2V)
I/F:            VDD33:    3.13V ~ 3.47V (Typ. 3.3V)
                 TVDD1:     1.7V ~ 3.47V (Typ. 3.3V)
                 TVDD2:     1.7V ~ 3.47V (Typ. 3.3V)
                  AVDD:    3.13V ~ 3.47V (Typ. 3.3V)
□ Operation Temperature Range:    Ta= -40 ~ 85ºC
□ Package:         64-pin HTQFP (10mm x 10mm, 0.5mm pitch)

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