AK7746 - Asahi Kasei Microsystems

AK7746 Audio DSP

The AK7746 is a highly integrated audio processor, including 5 A/D channels, an input mux that can select 2 stereo pairs from 8 stereo inputs, and an on-chip DSP. High quality analog performance is provided by the ADC’s achieving 98dB (48kHz) dynamic range. The A/D supports sampling frequencies from 8kHz to 96kHz. The AK7746 includes 72kbits of SRAM for audi.

Features

DSP: Word length: Instruction cycle time: Multiplier: Divider: ALU: 24-bit (Data RAM) 27ns (768fs, fs=48kHz ) 24 x 16 → 40-bit 24 / 24 → 16-bit or 24-bit 34-bit arithmetic operation (Overflow margin: 4bit) 24-bit arithmetic and logic operation Shift+Register: 1, 2, 3, 4, 6, 8 and 15 bits shifted left 1, 2, 3, 4, 8 and 15 bits shifted right (Other numbers in parentheses are restricted. Provided with indirect shift function) Program RAM: 768 x 32-bit Coefficient RAM: 1024 x 16-bit Data RAM: 256 x 24-bit Offset RAM: 48 x 13-bit (6144 x 12-bit / 3072 x 24-bit / 4096 x 12-bit + 1024 x 24-bit ) Inte.