General Description
The AK7714 is a highly integrated audio processing IC with 20-bit stereo ADC and 4-channel DAC plus on-chip DSP with 64-kbit delay RAM. The built-in ADC has a dynamic range of 99 dB with S/(N+D) of 92 dB, and the DAC has a dynamic range of 98 dB with S/(N+D) of 89 dB, thereby ensuring high performances.

FEATUREs
DSP:
    - Word length: 24-bit (Data RAM)
    - Instruction cycle time: 44.2 ns
    - Multiplier: 24 x 16 40-bit
    - Divider: 24 / 24 16-bit
    - ALU: 34-bit arithmetic operation (Overflow margin: 4 bits)
        24-bit arithmetic and logic operation
    - Shift+Register: 1, 2, 3, 4, 8 and 15 bits shifted left
        1, 2, 3, 4, (6, 14), 8 and 15 bits shifted right
                ( )Numbers in parentheses are restricted.
                Provided with indirect shift function
    - Program RAM: 448 x 32-bit
    - Coefficient RAM: 384 x 16-bit
    - Data RAM: 128 x 24-bit
    - Internal delay memory: 4096 x 16-bit or 2048 x 24-bit
    - Sampling frequency: 32 kHz to 48 kHz
    - Serial micro controller interface
    - Master clock: 512/384/256 fs (512 fs for sampling at 44.1 kHz or 32 kHz)
    - Master/slave operation
    - Serial signal input port (2 to 6 ch), output port (2 to 6 ch) : 16/20/24-bit
ADC: 2 channels
    - 20-bit 64 x Over-sampling delta sigma
    - DR, S/N : 99 dB
    - S/(N+D) : 92 dB
    - Digital HPF (fc = 1 Hz)
DAC: 4 channels
    - 20-bit 128 x Over-sampling delta sigma
    - DR, S/N : 98 dB
    - S/(N+D) : 89 dB
Others
    - Power voltage: + 5 V ±5%
    - Operating temperature range: -40°C to +85 °C
            Package: 100-pin LQFP (0.5 mm pitch)