AK7755 Overview
The AK7755 is a highly integrated digital signal processor, including a mono ADC, a stereo audio CODEC, a MIC pre-amplifier, a line-out amplifier and digital audio I/F. The audio DSP has 2560step at fs = 48kHz parallel processing power. As the AK7755 is a RAM based DSP, it is programmable for user requirements such as high performance hands free function and acoustic effects.
AK7755 Key Features
- Word length: 24-bit (Data RAM 24-bit floating point)
- Instruction cycle: 8.1ns (2560fs at fs=48kHz)
- Multiplier 24 x 24 → 48-bit (double precision available)
- Divider 20 / 20 → 20-bit (with floating point normalization function)
- ALU: 52-bit arithmetic operation (with overflow margin 4-bit)
- Program RAM: 4096 × 36-bit
- Coefficient RAM: 2048 × 24-bit
- Data RAM: 2048 × 24-bit (24-bit floating point)
- Offset Register: 32 × 13