Mitsubishi M65855FP Datasheet
MITSUBISHI SOUND PROCESSOR IC's
SERIES
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
M65855FP
SERIES
50
KARAOKE
1 Chip Digital Echo with Microphone mixing Amplifier
DESCRIPTION
The M65855FP is a CMOS IC built-in Digital Echo function with microphone mixing 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.
FEATURES
• Internal Input/Output low pass filter,A/D,D/A converters,microphone
mixing amplifier,memory achieve a digital echo system with a single
chip.
• High performance digital echo circuit thanks to 20Kbit memory
• Thanks to the improvement A/D,D/A converters,decrease the external
output
• Internal echo mute circuit and echo volume achieve a mixing level
control
• Built-in current control oscillation circuit for generating clocks
• Delay time =164msec
(Min.15ms to max. 200 ms can be set)
• Small 16-Pin Flat package (16P2N)
• Built-in automatic reset circuit with power turned on
• 5V single power supply
RECOMMENDED OPERATING CONDITIONS
Supply voltage range•••••••••••••••Vcc=3.5~5.5V
Rated supply voltage•••••••••••••••Vcc=5V
SYSTEM CONFIGURATION
Package Outline
Outline 16P2N
R
MIC1
MIC2
RAM
L
VOCAL
CUT
MIC AMP
MIC AMP
HPF
LPF KEY CONTROL
HPF
MIC VOL
MIX
MIC VOL
ECHO
M65855FP
MITSUBISHI
ELECTRIC
MIX
MIX
ECHO VOL
BASS
BASS
MIX
MIX
MIX
( / 10 )
1
L
R
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
PIN CONFIGURATION
MITSUBISHI SOUND PROCESSOR IC's
M65855FP
50
KARAOKE
SERIES
SERIES
GND
ECHOVOL
REF
OP2 IN
OP2 OUT
LPF2 IN
LPF2 OUT
MIC OUT 8
1
2
16
CLOCK
15
ECHOMUTE
M 6 5 8 5 5 F P
3
4
5
6
7
14
VCC
13
OP1 IN
12
OP1 OUT
11
LPF1 OUT
10
LPF1 IN
9 MIC IN
MITSUBISHI
ELECTRIC
( / 10 )
2
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
IC INTERNAL BLOCK DIAGRAM
MITSUBISHI SOUND PROCESSOR IC's
M65855FP
50
KARAOKE
SERIES
SERIES
REF
1/2 Vcc
AUTO
RESET
LPF1
CLOCK
ECHOMUTE2ECHOVOL
OSCILLATOR
CLOCK
RESET
D1 DO0
15
VOL
DO1
MAIN CONTROL
A/D
D/A
MO
M I
LPF2
20Kbit
SRAM
76543 16
MIC OUT
8
MIX
10 11 12 13
MITSUBISHI
ELECTRIC
1 14
GND
VCC
9
MIC IN
( / 10 )
3
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