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MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
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
MIC1 INPUT 1
ALC1 CONTROL 2
36 VOCAL CUT FILTER
35
ALC SUPPLY VOLTAGE
CONTROL
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 NF INPUT 3
MIC1 OUTPUT 4
34 AUDIO SW2
33 AUDIO SW1
M65845AFP
36P2R
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
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
RECOMMENDED OPERATING CONDITION
Supply voltage range••••••••••Vcc=4.5~5.5V
Rated supply voltage•••••••••• Vcc=5V
SYSTEM CONFIGURATION
AUDIO SW
Lch
INPUT
SOURCE
SELECTOR
L
R
VOCAL
CUT
MIX
Lch
OUTPUT
Rch
INPUT
MIX
ALC
MIC1
MIC VOL
MIX
DIGITAL
ECHO
MIC VOL
MIC VOL
ECHO VOL
MIX
Rch
OUTPUT
MIC SW
ALC
MIC2
MITSUBISHI
ELECTRIC
( 1 / 15 )
MITSUBISHI [ MITSUBISHI ELECTRIC SEMICONDUCTOR ]
