M65856SP Datasheet, PDF (1/19 Pages) Mitsubishi Electric Semiconductor – DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT

M65856SP
Digital Echo with Mic-mixing Circuit
REJ03F0085-0100Z
Rev.1.0
Sep.22.2003
Description
The M65856SP is a CMOS IC that has a microphone peripheral circuit and an echo generation circuit for karaoke use,
on a single chip.
Its Karaoke function makes it ideal for video CDs, mini-compos, CD radio cassette players, VIRs and other similar
devices.
Features
• High-performance digital echo circuit using 16-Kbit RAM
• Internal Surround function that allows audio from a monaural audio source to be reproduced in pseudo-stereo, and
audio from a stereo audio source to be reproduced as surround audio
• A mic amplifier with an ALC makes it possible to handle overload input, and the ALC operating voltage can be
externally set to the desired value.
• Internal dual-line mic volume, echo volume, and echo feedback volume
• Internal stereo mic mixing amplifier
• Internal functions for karaoke enjoyment (Vocal Cut, Auto Vocal Support)
• Interface pin provided for connection to an external key control IC
• The clock has an internal current control-type oscillation circuit, and the generation of unnecessary oscillation can
be prevented because the clock does not affect anything external to the unit.
• Internal Auto Reset circuit that functions when the power supply is turned on
• 5 V single power supply
Recommended Operating Conditions
• Operating power supply voltage range: Vcc = 4.5 to 5.5 V
Rated power supply voltage range: Vcc = 5 V
Rev.1.0, Sep.22.2003, page 1 of 18