M65856SP Datasheet, PDF (1/17 Pages) Mitsubishi Electric Semiconductor – DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT

MITSUBISHI SOUND PROCESSOR ICs
M65856SP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
DESCRIPTION
The M65856 is a CMOS IC built-in Digital Echo function with microphone peripheral circuits for
"Karaoke" equipment packed in a single chip.
It is suitable for "Karaoke" equipments such as Video CD Player, Mini Stereo, CD-Radio Cassette, TVor VCR.
FEATURES
High performance digital echo circuit thanks to 16Kbit memory
Built-in surround function which works Simulated Stereo for
monaural source and Stereo Surround for stereo source
ALC-equipped microphone amplifiers permit excessively
high input. ALC operating voltage can be set as desired.
2 microphone volumes, echo effect volume and echo
feedback volume are included
Stereo microphone-line mixing amplifiers
Karaoke entertainment functions such as vocal cut
and automatic vocal support system
Built-in interface terminal for external keycontrol IC
Built-in current-control oscillation circuit
Built-in automatic reset circuit activated with power on
5V single power supply
RECOMMENDED OPERATING CONDITION
Supply voltage range • • • • • • • • Vcc = 4.5 ~ 5.5V
Rated supply voltage • • • • • • • • • • • • • Vcc = 5V
PIN CONFIGURATION
MIC SW 1
MCLKCONT 2
VALC 3
MIC1IN 4
ALC1 5
MIC1NFIN 6
MIC1OUT 7
MIC1VOLIN 8
MIC2IN 9
ALC2 ₁₀
MIC2NFIN 11
MIC2OUT ₁₂
MIC2VOLIN 13
MICOUT 14
LPF1IN1 15
LPF1IN2 ₁₆
LPF1OUT 17
ADINTOUT 18
ADINTIN ₁₉
ADCONT 20
REF 21
42 _DATA
41 CLOCK
40 LATCH
39 PS2
38 PS1
37 VCFIL
36 LOUT
35 ROUT
34 SOURCEOUT
33 KEYCONIN
32 RIN
31 LIN
30 VOL IN
29 LPF2OUT
28 LPF2IN2
27 LPF2IN1
26 _DAINTOUT
25 DAINTIN
24 DACONT
23 VCC
22 GND
SYSTEM CONFIGURATION
KEY CONTROL IC
M65847FP
Lch
INPUT
Rch
INPUT
MIC1
MIC2
SOURCE
SELECTOR
L
R
(L+R)/2
VOCAL
CUT
ALC
MIC VOL
MIX
ALC
MIC VOL
PHASE
SHIFTER
SURROUND
MIX
ECHO
ECHO VOL
FEEDBACK
VOL
MITSUBISHI
ELECTRIC
MIX
Lch
OUTPUT
MIX
Rch
OUTPUT