AK7712A-VT Datasheet PDF | Asahi Kasei Microdevices

Asahi Kasei Microdevices AK7712A-VT

The AK7712A is a DSP(Digital Signal Processor) with built-in high performance 20bit 2ch ADC and 4ch DAC, on purposeto control the sound field. It is possible to calculate 383 steps on 44.1kHz and 48kHz sampling respectively. With a combination of this LSI and external memory for delay data,it can berealized easily to control the sound field such as Echo, Surround Presence Controller, and Key-control which are needed forsomething like Karaoke.

Part No.	AK7712A-VT
Datasheet	AK7712A-VT Download
Manufacturer	Asahi Kasei Microdevices
Description	Built-in 20-bit ADC/DAC Sophisticated Audio DSP
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GENERAL DESCRIPTION

In case of 32kHz sampling, it can caluculate up to 511 steps. Parametric Equalizing can be done without external memory.

FEATURES

[ DSP unit ] Word length: 24-bit (data RAM) Instruction cycle time: 54ns(maximum speed) Multiplier: 24 × 16 → 40-bit Divider: 16 ÷ 16 → 16-bit Program RAM: 384 × 32 bit External memory: DRAM,Pseudo-SRAM and SRAM can be connected (only use for delay data). Sampling frequency: 32kHz∼48kHz Automatic clear function of external RAM: 47msec after bringing RST high at fs=48kHz (include internal data RAM) Microcomputer interface: synchronized signal type 8-bit serial input 1 channel, synchronized signal type 24-bit serial output 1 channel Master clock: 512(511)/384(383)/256(255)fs The value inside ( ) is maximum calculation steps. 512fs mode is available when 32kHz sampling is chosen. Conversion of master/slave mode for LRCK and BCLK: When master mode is selected, the outputs of LRCK and BCLK depend on the set-up for input f...