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LC83026E Datasheet(PDF) 1 Page - Sanyo Semicon Device |
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LC83026E Datasheet(HTML) 1 Page - Sanyo Semicon Device |
1 / 16 page Overview The LC83026E provides the audio signal processing required in karaoke systems, including pitch shift, microphone echo, voice muting, and simple surround simulation. It is a special-purpose DSP that implements karaoke processing with the addition of a single external 256-Kb DRAM. The LC83026E includes on-chip A/D and D/A converters and supports both digital and analog inputs and outputs. Its functions and characteristics can be modified to match the needs of the end product by sending coefficient data from the microcontroller over a serial interface. Features • Application features — Pitch shift The LC83026E supports pitch shifting of ±15 quarter tone steps, or ±1 octave in scale tone units as specified by command data. This pitch shifting can be applied either to the music track or to the microphone input. It is also possible to set up pitch shifting of ±1 octave in arbitrary steps by setting coefficient values. — Microphone echo The LC83026E can apply echo processing to the input signal from the microphone A/D converter. The echo coefficients, including amount of echo and delay time, can be set. — Voice muting The LC83026E provides attenuation of monaural components in the music signal. This allows CDs that include vocals to be used for karaoke. The voice muting function is turned on or off by command data transferred over the serial interface. — Simple surround The LC83026E implements a simple surround simulation function by adding delay components to the music signal. The LC83026E includes six sets of simple surround coefficients as preset data, and these can be selected and switched using command data transferred over the serial interface. User-original surround effects can be implemented by setting coefficients, but the algorithm is fixed. — Versatile input mixing The LC83026E supports hybrid mixing of digital music inputs and analog music inputs for both the left and right channels to support the processing of a wide range of disks. • Audio inputs and outputs — Inputs: Digital One system (stereo) A/D converters Three channels — Outputs: Digital One system (stereo) D/A converters Two channels — A/D converters Second-order delta-sigma modulation Three channels — D/A converters 2 × oversampling digital filters + third-order noise shaper system Two channels • Master clock: 768fs • External memory: Up to two 256K (64K × 4 bits) external DRAMs can be used. • Microcontroller input: Synchronous 8-bit serial data • Power-supply voltage: 5V single-voltage supply • Package: QFP80E Package Dimensions unit: mm 3174-QFP80E CMOS IC Ordering number : EN5663 63097HA(OT) No. 5663-1/16 SANYO: QIP80E [LC83026E] SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN Digital Signal Processor for Karaoke Systems LC83026E |
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