m65845afp Renesas Electronics Corporation., m65845afp Datasheet - Page 12

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

M65845AFP
Application Example
REJ03F0170-0201 Rev.2.01 Jan 25, 2008
Page 12 of 13
Microphone amplifier : G
ECHO
MIC1
MIC2
0.047
5k
5k
2.2
2.2
0.068
1
1
1
1
24k
24k
30k
30k
0.1
47
24k
4.7
4.7
1
1
1000p
: Delay time 197 ms (fs = 83.3 kHz)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
ALC operating voltage –4 dBV
Cut-off frequency 3.1 kHz
V
MICIN
ALC1
MIC1NFIN
MIC1OUT
MIC1VOLIN
MIC2IN
ALC2
MIC2NFIN
MIC2OUT
MIC2VOLIN
MICOUT
LPF1IN
LPF1OUT
ADINTIN
ADINTOUT
ADCONT
REF
GND
= 47 dB, fcl = 50 Hz
0.15
50k
DAINTOUT
RLINEOUT
LLINEOUT
MICECHO
LPF2OUT
AUDSW2
AUDSW1
DACONT
RLINEIN
DAINTIN
LLINEIN
CLOCK
MICSW
LPF2IN
VOLIN
ECHO
VCFIL
CONT
VALC
Feed Back
OUT
VCC
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
0.1
0.15
1
0.1
0.068
1000p
MIC
SW
D2
D1
24k
2.2
2.2
1
1
24k
1
30k
100
Lout
Rout
Lin
Rin
24k
0.047
0.01
24k
51k
Units R:
V
51k
CC
C: F
V
CC
V
CC