m65845afp Renesas Electronics Corporation., m65845afp Datasheet - Page 4

• Manufacturer Part Number: m65845afp
• Description: Digital Echo With Microphone Mixing Circuit
• Manufacturer: Renesas Electronics Corporation.

M65845AFP
Pin Description
REJ03F0170-0201 Rev.2.01 Jan 25, 2008
Page 4 of 13
Pin
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
2
3
4
5
6
7
8
9
MIC1IN
ALC1
MIC1NFIN
MIC1OUT
MIC1VOLIN
MIC2IN
ALC2
MIC2NFIN
MIC2OUT
MIC2VOLIN
MICOUT
LPF1 IN
LPF1 OUT
ADINTIN
ADINTOUT
ADCONT
REF
GND
V
DACONT
DAINTIN
DAINTOUT
LPF2 IN
LPF2 OUT
ECHOVOLIN
RLINEIN
LLINEIN
RLINEOUT
LLINEOUT
MICECHOOUT
MICSW
CLOCK CONT
AUDSW1
AUDSW2
VALC
VCFIL
CC
Symbol
MIC1 NF input
MIC1 volume input
MIC2 NF input
MIC2 volume input
MIC output
GND
Echo volume input
Rch line input
Lch line input
Rch line output
Lch line output
MIC echo output
MIC SW
Audio SW1
Audio SW2
MIC1 input
ALC1 control
MIC1 output
MIC2 input
ALC2 control
MIC2 output
Low pass filter 1 input
Low pass filter 1 output
A/D integral input
A/D integral output
A/D control
Reference
Power supply
D/A control
D/A integral input
D/A integral output
Low pass filter 2 input
Low pass filter 2 output
Clock control
ALC supply voltage
control
Vocal cut filter
Pin Name
Connect MIC1
Connect C which determine recovery time
Set up MIC1 amp gain for feedback circuit
Connect microphone volume which turn down input signal
Connect MIC2
Connect C which determine ALC attack, recovery time
Forms MIC2 amp gain with feedback
Connect microphone volume which turn down input signal
Mixing output with MIC1 and MIC2
Forms the front low pass filter with external CR for digital echo
Forms integrator with external C and R
ADM A/D adaptive control
1/2 V
ADM A/D adaptive control
Forms integrator with external C
Forms post low pass filter with external CR for digital echo
Connect microphone volume which turn down input signal
Mixing output with line and microphone
Mixing output with microphone and echo
L: Microphone OFF, H: Microphone ON
Controls built-in clock generation circuit with external R
Changing source sound signal
Form ALC operation voltage with control voltage
Through frequency under vocal level
CC
, connect filter C
Function