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Part: M65845AE
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Datasheet: Download M65845AE datasheet File size : 336 kB
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P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
DESCRIPTION
a RlY ecificcttitoonchange N A sp
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MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
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 CONTROL 34 AUDIO SW2 33 AUDIO SW1
ALC SUPPLY VOLTAGE
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 singlechip 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
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 MIIC VOL M C VOL ECHO VOL MIX
Rch OUTPUT MIC SW
ALC
MIC2
MITSUBISHI ELECTRIC
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P
h etric e;T otic param Ne som
AUDSW1 AUDSW2 VCFIL CLOCK CONT 32 17 19 29 Lout 18 36 34 REF 33
Vcc
GND
I je a L I Ms notlia fitin are sub s R E is i m
Lin 27
Rin 26 28 R out
AUDIO SOURCE CONTROL 1/2Vcc
31 MIC SW
.
VALL 35
a RlY ecificcttitoonchange N A sp
MIC1IN
1
.
MIC1NFIN
3
MIC1OUT
4
CLOCK GENERATOR
16KRAM
30 MICECHO OUT
IC INTERNAL BLOCK DIAGRAM
ALC
ALC1 2
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
MITSUBISHI ELECTRIC
MIC1 VOLIN
5
MIC2IN
6
LOGIC
REF LPF1 A/D D/A REF LPF2
MIC2NFIN MIC2OUT
8
9
ALC
ALC2 11 MIC LPF1 OUT IN 12
7 25 13 16 14 15 20 21 22 23 24 LPF1 DAINTOUT DACON LPF2OUT ECHOVOLIN ADINTIN OUT LPF2IN DAINTIN ADCONT ADINTOUTT
M65845AFP
MIC2 VOLIN
10
MITSUBISHI SOUND PROCESSOR ICs
( 2 / 15 )
P
h etric e;T otic param Ne som
I je a L I Ms notlia fitin are sub s R E is i m
a RlY ecificcttitoonchange N A sp
.
.
MITSUBISHI SOUND PROCESSOR ICs
M65845AFP
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN DESCRIPTION No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol MIC1IN ALC1 MIC1NFIN MIC1OUT MIC1VOLIN MIC2IN ALC2 MIC2NFIN MIC2OUT Pin Name
MIC1 INPUT ALC1 CONTROL MIC1 NF INPUT Set up MIC1 amp gain for feedback circuit MIC1 OUTPUT MIC1 VOLUME INPUT MIC2 INPUT ALC2 CONTROL MIC2 NF INPUT Forms MIC 2 amp gain with feedback MIC2 OUTPUT Connect microphone volume which turn down input signal Mixing output with MIC 1 and MIC 2 Connect microphone volume which turn down input signal Connect MIC 2 Connect MIC1 Connect C which determine recovery time
Function
Connect C which determine ALC attack ,recovery time
MIC2VOLIN MIC2 VOLUME INPUT MICOUT LPF1 IN LPF1 OUT ADINTIN ADINTOUT ADCONT REF GND VCC DACONT
MIC OUTPUT LOWPASS FILTER1 INPUT LOWPASS FILTER1 OUTPUT A/D INTEGRAL INPUT
Forms the front lowpass filter with external CR for digital echo
Forms integrator with external C and R A/D INTEGRAL OUTPUT A/D CONTROL REFERENCE GND POWER SUPPLY D/A CONTROL ADM A/D adaptive control ADM A/D adaptive control
1/2Vcc, connect filter C
MITSUBISHI ELECTRIC
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Others parts begin by m6
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