SNC745
16-bit Voice Processor
VDD
4.5V
BT2
3V
BT1
BATTERY BATTERY
U1
3
10
C6
R1
220K
0.1u
C4
23
47u
43
13
C1
0.1u
VCC
7
6
VDD
VDD
VDD
VDD
LXOUT
RST
TEST
P0.0
CKSEL
P0.1
P0.2
VR1
75K
VR2
100K
VDD
LS1
SPEAKER
8050
42
Q1
R7
R
2
4
BP0
BN0
VO
39
40
P0.3
XIN
P0.4
P0.5
XOUT
P0.6
P0.7
P0.8
P0.9
P0.10
P0.11
P0.12
P0.13
P0.14
P0.15
P1.0
P1.1
35
TR6
36
TR7
37
TR8
38
GND
GND
GND
GND
GND
P1.7
P1.6
P1.5
P1.3
P1.4
P1.2
8
9
11
12
16
17
18
19
20
21
22
24
25
26
27
28
TR1
29
TR2
30
TR3
33
TR4
34
TR5
45
C8 15p
SNC745
CVDD
CVDD
LXIN
15
31
44
C7
15p
Y1
32768
C5
4.7u
1
5
14
32
I/O and VDD 4.5V, CVDD 3V, 16MHz ROSC, DA output
Note:
1. All the ”VDD” 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.
Ver. 1.4
13
41
August 31, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
