– 65 –
– MAIN Board –
IC100
TDA7427AD
IC102
SAA6588T-118 (MDX-C7970R)
IC250
NJM2360AM (TE2)
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
+
–
SCOUT
MRO
MPTH
TCON
OSCO
OSCI
VSSD
VDDD
DAVN
SDA
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
SCL
2
1
6
15
11
13
16
14
12
INTERFACE
REGISTER
SIGNAL QUALITY
DECODER
CLOCKED
COMPARATOR
POWER SUPPLY
& RESET
TEST
CONTROL
OSCILLATOR
& CLOCK
PAUSE
DETECTOR
MULTI
PATH
DETECTOR
57kHz
8th ORDER
BAND-PASS FILTER
RDS/RDBS
DECODER
RDS/RDBS
DEMODULATOR
IIC BUS SLAVE
TRANSCEIVER
17
18
CIN
19
LVIN
20
8
7
DATA
CLOCK
DATA
CLOCK
4
4
5
9
10
3
4
5
+
–
1
CS
3
CT
4
GND
VREF
1.25V
2
ES
Q1
Q2
8 CD
6 V+
5 INVIN
7 SI
Q
S
R
CT OSC
Ipk
COMP
Summary of Contents for MDX-C7970/C7970R
Page 4: ... 4 SECTION 1 GENERAL This section is extracted from instruction manual ...
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Page 41: ... 61 4 20 SCHEMATIC DIAGRAM SUB Board MDX C7970 C7970R Page 54 Page 57 ...
Page 48: ... 68 6 IC700 X1 KEY Board 1 IC801 º OSC IN 5 8 Vp p 271 ns 2 8 Vp p 3 5 µs ...