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PIN#
PIN NAME I/O
1
REF
2
VDD
3
Agnd
4
Treb_L
5
Treb_R
6
RIN
7
Rout
8
Loud_R
9
Rin 3
10
Rin 2
11
Rin 1
12
Loud_L
13
Lin 3
14
Lin 2
15
Lin 1
16
LIN
17
Lout
18
Bin _L
19
Bout _L
20
Bin _R
21
Bout _R
22
RRout
23
LRout
24
RFout
25
LFout
26
Dgnd
27
Date
28
Clk
ICA1 control & regulate the voltage (12Vto9V )to the ICA2
Volume signal through ICA2 pin24(right)pin25(left) into audio amplifier
ICA3
2. Audio amplifier:
ICA3(TDA1517) is an integrated class-B dual output amplifier ,
It contains two identical amplifier differential input stages . the gain
Of each amplifier is fixed at 20 dB .
Pins 1 and 9 are right and left channel inputs respectively. Pins 4 and 6 are
right and left channel outputs which connect to two 4 OHM speakers.
ViewSonic Corporation
DESCRIPTION
-
Analog reference voltage(1/2 VDD)
-
Supply input voltage
-
Analog ground
I
Left channel input for treble control
I
Right channel input for treble control
I
Audio processor right channel input
O
Gain output&input selector for right channel
I
Right channel loudness input
I
Right channel input 3
I
Right channel input 2
I
Right channel input 1
I
Left channel loudness input
I
Light channel input 3
I
Light channel input 2
I
Light channel input 1
I
Audio processor left channel input
O
Gain output&input selector for left channel
I
Left bass controller input channel
O
Left bass controller output channel
I
Right bass controller input channel
O
Right bass controller output channel
O
Right rear speaker output
O
Left rear speaker output
O
Right front speaker output
O
Left front speaker output
-
Digital ground
I
IIC Date
I
IIC Clk
40
Confidential – Do Not Copy
VG800b
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