Cambridge Audio 340A - Microcontroller PCB Schematic

Cambridge Azur 340A Intergrated Amplifier
AP14518/1 Microcontroller PCB Schematic (PIC's/Switches/LED's)
RC6
17
RC5
16
RC4
15
RC3
14
RC2
13
RC1
12
RC0
11
OSC2
10
RA0
2
RA2
4
MCLR/Vpp
1
RA1
3
RA3
5
RB1
22
RB7
28
RA4
6
RA5
7
Vss2
8
OSC1
9
RB2
23
RB3
24
RB6
27
RB4
25
RB5
26
Vss
19
RC7
18
Vdd
20
RB0
21
U1
PIC16F72
CRS1
FREQ=4MHz
1
2
CN5
H2 2.54mm 90
C6
100n
FIN
1
GND1
2
RIN
3
NC
4
GND2
5
VCC
6
OUT2
7
COM
8
OUT1
9
U2
BA6218
+5V
DGND
DGND
DGND
+5V
DGND
C5
100n
R4
220R
+5V
D1
CHANNEL LED
D2
CHANNEL LED
D3
CHANNEL LED
D4
CHANNEL LED
D5
CHANNEL LED
D6
CHANNEL LED
SW2
CD
SW3
TUNER/DAB
SW5
AV/MD
SW1
AUX/PHONO
SW6
TAPE MON
SW4
DVD
+5V
3
OPT
1
GND
2
U3
TSOP18 IR RECEI
C1
100n
strobe
data
clockclock
data
strobe
vol up
vol down
vol up
vol down
C3
47u 16V
R3
220R
C4
100n
1
2
3
4
5
6
7
8
CN2
H8 2.54mm 90
DGND
+5V
IR RECEIVER
AUX/PHONO CD TUNER/DAB
TAPE MON
DVD AV/MD
1
2
3
CN3
CONN-H3
1
2
3
CN4
CONN-H3
MOTOR CONTROL
CONN TO MAIN PCB
MUTE
+5V
DGND
PORT B HAS WEAK PULLUPS 250uA typ
IN-CIRCUIT PROGRAMMING CONNECTOR
R1
100K
+5V
DGND
+5V
GND
Vpp
CLK
1
2
3
4
5
6
CN1
ICP
GND
Data I/O
DGND
MUTE
TO MOTOR
VOLUME POT
+5V +5V
OUTPUT RELAY
IR IN
DC OFFSET
OUTPUT RELAY
R2
47R
HI = NORMAL
C2
10U 16V SM EL
TSOP1835/37
6 mA
86-756-8687998
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