Preliminary
SNC749
16-bit Voice Processor
ROSC
U1
VDD
47
VDD
VDD
VDDPP
39
VDDIO1
C14
0.1u
C2
47u/10V
C10
C4
47u/10V
0.1u
49
45
44
43
42
41
40
38
37
36
35
VSSPP
VSSPP
VSSIO1
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
1.5V
BT2
LS2
1
1
1
1
1
1
1
1
2
46
48
SW8
VCC
BP0
BN0
2
2
2
2
2
2
2
SW7
SW6
SW5
SW4
SW3
SW2
SW1
SNC749 real chip
Push-Pull
VDD
1
6
BT1
3V
Test
VDD
VDDIO2
R2
220K
C16
47u/10V
C15
0.1u
2
4
7
VSSIO2
RST_
SW17
VCC
CVDD
C12
0.1u
C13
VDD
C3 47u/10V
3
14
9
CVSS
VDDA
VSSA
XIN
0.1u
C9
47u/10V
C10
0.1u
8
5
REGOUT
CKSEL
VDD
10
NC
NC
VDD
25
VDDIO0
C11
0.1u
C1
47u/10V
20
11
12
XOU T
LXIN
LXIN
Y2
C7
VSSIO0
VSSIO0
30
20pF
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
16
17
18
19
21
22
23
24
26
27
28
29
31
32
33
34
32768
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P0.8
P0.9
P0.10
P0.11
P0.12
P0.13
P0.14
P0.15
SW9
20pF
C8
13
LXOUT
LXOUT
SW10
SW11
SW12
SW13
SW14
SW15
15
NC
NC
D1
SW16
D2
D3
D4
D5
D6
D7
D8
Note: The SNC749 total have 6 powers, each power use one 47uF and one 0.1uF capacitor. If
user wants to save cost, you can use 0.1uF on each power and add 47uF on VDDPP and
VDDA.
14
Ver. 1.8
March 6, 2007