45
– MAIN Board –
IC151
TDA7427ADTR
IC271
BA8270FV-E2
LP FM
LP HC
LP AM
VREF
DOUT3
DOUT4
DOUT5
DOUT6
OSCIN
OSCOUT
NC
SCL
SDA
IF AM
LP OUT
VDD2
GND-SIG
NC
FM IN
AM IN
GND-AM
ADDR
VDD1
HFREF
DOUT2
DOUT1/INLOCK
SSTOP
IF FM
3
4
1 2
7 8
5 6
11
12
9
10
15
16
17
18
19
20
21
22
23
24
25
26
27
28
13
14
TEST
LOGIC
PHASE
COM-
PARATOR
CHARGE
PUMP
SWITCH
LP1/LP2
INLOCK
DETECTOR
SWITCH
OUT
16 BIT
PROGRAMMABLE
COUNTER
SWITCH
SWM/DIR
SWITCH
SWM/DIR
PRE
COUNTER
SUPPLY &
POWER ON RESET
FM/AM
SWITCH
5 BIT
PROGRAMMABLE
COUNTER
11 BIT
PROGRAMMABLE
COUNTER
11 – 21 BIT
PROGRAMMABLE
COUNTER
IIC BUS
INTERFACE
FM/AM
SWITCH
REFERENCE
OSCILLATOR
14 BIT
PROGRAMMABLE
COUNTER
CONTROL
TIMER
PORT
EXTENSION
+
–
1
2
3
4
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
Summary of Contents for MDX-C8970
Page 4: ...4 SECTION 1 GENERAL This section is extracted from instruction manual ...
Page 5: ...5 ...
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Page 41: ...41 MDX C8970 4 22 SCHEMATIC DIAGRAM RELAY Board Page 39 Page 33 ...