SNC745
16-bit Voice Processor
12. APPLICATION CIRCUIT
VDD (3V)
U1
SNC745
C4
47u
C6
0.1u
VDD
3
10
23
43
15
31
44
VDD
VDD
VDD
VDD
CVDD
CVDD
LXIN
C5
4.7u
R1
220K
45
LXOUT
13
7
RST
C1
0.1u
TEST
CKSEL
8
330
330
330
330
330
330
330
330
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
S1
6
9
RESET
11
12
16
17
18
19
40
39
XIN
C2 15p
Y1
16MHz
XOUT
C3 15p
LS1
2
4
20
21
22
24
25
26
27
28
BP0
BN0
P0.8
P0.9
SPEAKER
P0.10
P0.11
P0.12
P0.13
P0.14
P0.15
42
VO
TR1
TR2
TR3
TR4
29
30
33
34
P1.0
P1.1
P1.2
P1.3
TR5
TR6
TR7
TR8
35
36
37
38
P1.4
P1.5
P1.6
P1.7
3V, 16MHz Crystal, PWM
Note:
1. All the ”VDD” and “CVDD” should be connected together before connected to the
power source which with a 47uF(C4) capacitor.
2. The capacitor “C5” is near the “CVDD” pin.
11
Ver. 1.3
October 23, 2002
SONIX [ SONIX TECHNOLOGY COMPANY ]
