Filter
Top Products
MDX-CA680/CA680X
2424
4-2. BLOCK DIAGRAM – TUNER Section –
1
2
ANT-FM
ANT-AM
2
VSM
14
S-METER
10
MPX
8
AM-DET
9
RDS-DET
FM/AM TUNER UNIT
TU10
SYSTEM CONTROLLER
IC501 (1/3)
17
SDA (EEPROM)
J10
(FM/AM ANTENNA IN)
5
VCC (8.5V)
TUNER +8.7V
16
VDD (5V)
TUNER +5.6V
11
VDD EEP (5V)
86
8
MPTH
27
DAVN
RDS DECODER
IC51
INTERFACE
REGISTER
IIC BUS
SLAVE
TRANSCEIVER
OSCILLATOR
& CLOCK
X51
4.332MHz
4
8
5
OSCI
OSCO
SDA
SCL
DAVN
57 kHz
BAND-PASS
FILTER
CLOCKED
COMPARATOR
RDS/RDBS
DEMODULATOR
& DECODER
SIGNAL
QUALITY
DECODER
16
18
19
MPX
CIN
4
5
SC
OUT
MULTI
PATH
DETECTOR
20
2
LVIN
MPTH
7
QUALITY
90
NS MASK
BAND-PASS
FILTER
IC20
Q22
NOISE DET
DISCHARGE
SWITCH
DATA
CLOCK
DATA, CLOCK
MPX
E
AM
F
S-METER
H
BU B+
EEP SIO
• SIGNAL PATH
: FM
: MW/LW
18
SCL (EEPROM)
87
EEP CKO
SDA (IICBUS)
SCL (IICBUS)
BUFFER
Q21
DATA
12 13
CLOCK
9
I
10
(AEP, UK)
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