ISSI IS31FL3731 Manual page 3

IS31FL3731 Audio Modulated Matrix LED Driver Evaluation Board Guide
CA1
D1
CA2
D17
CA3
D33
CA4
D49
CA5
D65
CA6
D81
CA7
D97
CA8
D113
CA9
D129
K1
MODE
VCC 1
2
C6 3
1uF 4
5
RXD
6
7
TXD
R7
INTB 8
10K
9
JP1 10
11
OPEN=EXT CTRL
C7
33p
Integrated Silicon Solution, Inc. – www.issi.com
R1.0, 07/12/2012
VCC VCC C5
1uF
R4
100K
U2
33
32
31
30
RST
29
RXD
28
STC12C5A60S2
27
TXD
26
INT0
25
INT1
24
23
CON1
DC IN
Y1 C8
12MHZ 33p
CON2
AUDIO IN
Figure 2:IS31FL3731 Application Schematic
VCC
2
C2
TP3 R5 R3 R2
1uF
SDB 4.7K 4.7K 4.7K
5
SCL
4
SDA SCL 20
3
INTB SDA 19
2
INTB 4
GND
1
SDB 3
R6
TP4 100K
VCC
5
TXD
4
C4
RXD
3
Audio In 0.22uF 17
GND
2
GND
1
6
ISP 16
R1 C3
18
20K 0.1uF
5
TP1
VCC
C1
10uF
TP2
C9 U3
R8
0.22uF
20K
Audio In 4
VCC
6
1
C10
1uF 7
IS31AP4991
CB1
D16
CB2
D32
CB3
D48
CB4
D64
CB5
D80
CB6
D96
CB7
D112
CB8
D128
CB9
D144
U1
VCC
21 CA1
CA1
22 CA2
CA2
23 CA3
CA3
24 CA4
CA4
25 CA5
SCL CA5
26 CA6
SDA CA6
27 CA7
INTB CA7
28 CA8
SDB CA8
1 CA9
CA9
7 CB1
CB1
8 CB2
CB2
9 CB3
CB3
10 CB4
IN CB4
11 CB5
CB5
12 CB6
REXT CB6
13 CB7
C_fILT CB7
14 CB8
CB8
15 CB9
AD CB9
GND
IS31FL3731
R9
39K
5 CON3
IN- VO1
SPK
8
VO2
VDD
3
SD IN+
2
BYPASS
GND
C11
1uF
3