SNC745
16-bit Voice Processor
VDD
BT2
BT1
4.5V
3V
BATTERY BATTERY
U1
SNC745
3
15
31
44
C5
VDD
VDD
VDD
VDD
CVDD
CVDD
LXIN
4.7u
10
23
43
C6
C4
47u
C7
15p
R1
220K
0.1u
Y1
32768
45
LXOUT
13
7
RST
C8 15p
C1
0.1u
TEST
CKSEL
8
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
6
VCC
9
11
12
16
17
18
19
VR1
75K
40
39
XIN
VR2
XOUT
100K
VDD
LS1
SPEAKER
2
4
20
21
22
24
25
26
27
28
BP0
BN0
P0.8
P0.9
8050
Q1
P0.10
P0.11
P0.12
P0.13
P0.14
P0.15
42
VO
R7
R
TR1
29
30
33
34
P1.0
P1.1
P1.2
P1.3
TR2
TR3
TR4
TR5
TR6
TR7
TR8
35
36
37
38
P1.4
P1.5
P1.6
P1.7
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.
13
Ver. 1.3
October 23, 2002
SONIX [ SONIX TECHNOLOGY COMPANY ]
