AK7758VN Datasheet, PDF (1/32 Pages) Asahi Kasei Microsystems – DSP with Stereo CODEC + Mic/Lineout Amp

[AK7758]
AK7758
DSP with Stereo CODEC + Mic/Lineout Amp
1. General Description
The AK7758 is a highly integrated digital signal processor, a stereo audio CODEC, a MIC pre-amplifier, a
line-out amplifier, digital audio I/F. The main and sub DSPs have 3072step at fs = 48kHz parallel
processing power. As the AK7758 is a RAM based DSP, it is programmable for user requirements such
as high performance hands free function and acoustic effects. The AK7758 is available in a space saving
small 36-pin QFN package.
2. Features
□ DSP
- Word Length: 28-bit (Simple floating point)
- Instruction Cycle: Maximum 6.8ns (3072fs at fs=48kHz)
- Multiplier: 24 x 24 → 48-bit (double precision available)
- Divider: 24 / 24 → 24-bit (with floating point normalization function)
- ALU: 52-bit arithmetic operation (with overflow margin 4-bit)
- Program RAM (PRAM): 6144 x 36-bit
- Coefficient RAM (CRAM): 4096 x 24-bit
- Data RAM (DRAM): 4096 x 28-bit (24-bit floating point)
- Offset Register (OFREG): 32 x 14-bit
- Delay RAM (DLRAM): 16384 x 28-bit
- JX pins (Interrupt)
□ Sub DSP
- Word Length: 28-bit (Simple floating point)
- Instruction Cycle: Maximum 6.8ns (3072fs at fs=48kHz)
- Multiplier: 24 x 24 → 48-bit (double precision available)
- Divider: 24 / 24 → 24-bit (with floating point normalization function)
- ALU: 52bit arithmetic operation (with overflow margin 4bit)
- Program RAM (PRAM): 1024 x 36-bit
- Coefficient RAM (CRAM): 3072 x 24-bit
- Data RAM (DRAM): 3072 x 28-bit
- Delay RAM (DLRAM): 3072 x 28-bit
□ Two Digital Interfaces (I/F 1, I/F 2)
- Digital Signal Input Port (6ch) MSB justified 24-bit/ LSB justified 24, 20, 16-bit and I²S
- Digital Signal Output Port (8ch) MSB justified 24-bit/ LSB justified 24, 20, 16-bit and I²S
- Short / Long Frame
- TDM 128fs (4ch), 192fs (6ch), 256fs (8ch) Formats
016003563-E-02-PB
-1-
2016/09