M65845AFP Datasheet, PDF (1/15 Pages) Mitsubishi Electric Semiconductor – DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT

M65845AFP _{PRELIMINARY Nsootmicee}
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DIGITAL ECHO WITH
MITSUBISHI SOUND PROCESSOR
MICROPHONE MIXING CIRCUIT
ICs
DESCRIPTION
The M65845AFP 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,TV or VCR.
Being pin compatible with the M65845FP,the M65845AFP is suitable for
upgrading the series.
PIN CONFIGURATION
FEATURES
•High performance digital echo circuit thanks to 16Kbit
memory
•Two microphone-mixing lines,vocal cut circuit,digital echo, and
line-mixing amplifier are contained,enabling single-
chip package of microphone peripheral circuit of "Karaoke"
equipment.
•ALC-equipped microphone amplifiers permit excessively
high-input. ALC operating voltage can be set as desired.
•Vocal cut circuit of complete stereo construction
•Compatibility with the M65845FP
•Built-in current-control oscillation circuit
•Built-in automatic reset circuit activated with power on
•Single power supply (5V)
MIC1 INPUT 1
ALC1 CONTROL 2
MIC1 NF INPUT 3
MIC1 OUTPUT 4
MIC1 VOLUME INPUT 5
MIC2 INPUT 6
ALC2 CONTROL 7
MIC2 NF INPUT 8
MIC2 OUTPUT 9
MIC2 VOLUME INPUT 10
MIC OUTPUT 11
LOWPASS FILTER1 INPUT 12
LOWPASS FILTER1 OUTPUT 13
A/D INTEGRAL INPUT 14
A/D INTEGRAL OUTPUT 15
A/D CONTROL 16
REFERENCE 17
GND 18
36 VOCAL CUT FILTER
35
ALC SUPPLY VOLTAGE
CONTROL
34 AUDIO SW2
33 AUDIO SW1
32 CLOCK CONT
31 MIC SW
30 MICECHO OUTPUT
29 Lch LINE OUTPUT
28 Rch LINE OUTPUT
27 Lch LINE INPUT
26 Rch LINE INPUT
25 ECHO VOLUME INPUT
24 LOWPASS FILTER2 OUTPUT
23 LOWPASS FILTER2 INPUT
22 D/A INTEGRAL OUTPUT
21 D/A INTEGRAL INPUT
20 D/A CONTROL
19 POWER SUPPLY
36P2R
RECOMMENDED OPERATING CONDITION
Supply voltage range••••••••••Vcc=4.5~5.5V
Rated supply voltage•••••••••• Vcc=5V
SYSTEM CONFIGURATION
Lch
INPUT
Rch
INPUT
MIC1
MIC2
ALC
ALC
MIC VOL
MMIICC VVOOLL
AUDIO SW
SOURCE
SELECTOR
L
R
VOCAL
CUT
MIX
MIX
DIGITAL
ECHO
ECHO VOL
MIX
Lch
OUTPUT
MIX
Rch
OUTPUT
MIC SW
MITSUBISHI
ELECTRIC
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