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 ...