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7.2 PARTS
7.2.1 IC
CXA2559Q
PML003AM
VCC
IN1_R
IN2_R
IN3_R IN4+_R
28
27
26
1
2
3
Vref
IN1_L
IN2_L
IN3_L
IN4-_R
AGND
25
24
23
22
Isolator
circuit
Anti radiation
Anti Alias
filter
filter
Primary
Treble
volume
Auto-Zero
Middle
Middle
Primary
Auto-Zero
volume
Treble
Anti Alias
Anti radiation
filter
filter
Isolator
circuit
4
5
6
7
IN4+_L
IN4-_L
AGND Loud-
Rear-
Loud-
Front-
out_R
SVin_R
out_R
out_R FIE_R
21
20
19
18
FIE
Fader
volume
Loudness
volume
Zero cross
detect circuit
Bass
Bass
Zero cross
detect circuit
Loudness
volume
Fader
volume
FIE
8
9
10
11
SVin_L Front-
Rear-
out_L
out_L
out_L
KEH-P490,P4900,P4950
STB
DATA
17
16
15
Secondary
volume
Digital block
Secondary
volume
12
14
13
FIE_L
DGND
CLK
43
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