JVC MX-G68V Service Manual page 43

LC72131M (IC02) : PLL frequency synthesizer
1. Pin layout
XIN 1
20
CE 2
19
DI 3
18
4
CL
17
DO 5
16
BO1 6
15
BO2 7
14
BO3 8
13
9
BO4
12
IO1 10
11
2. Block diagram
1
20
14
1/2
13
2
3
C B
2
I/F
4
5
Power
on
15
Reset
19
3. Pin function
Pin
Symbol I/O
No.
X'tal oscillator connect (4.5MHz/7.2MHz)
XIN I
1
Chip enable
-
2 CE
Input data
I
DI
3
Clook
CL I
4
Output data
DO O
5
Output port
O
6 BO1
Output port
O
BO2
7
Output port
BO3 O
8
Output port
BO4 O
9
I/O port
I/O
10 IO1
XOUT
V
SS
AOUT
AIN
PD
V
DD
FMIN
AMIN
IO2
IFIN
Reference
Driver
Swallow Counter Swallow Counter
1/16,1/17 4bit 1/16,1/17 4bit
12bit
Programmable
DriverS
Data Shift Register & Latch
6 7 8 9 10 12
Function
Phase
Detector
16
Charge Pump
17
18
Unlock
Detector
11
Universal
Counter
Pin
No. Symbol I/O
IF counter signal input
11 IFIN I
I/O port
IO2 I/O
12
AM Local oscillator signal input
I
13 AMIN
FM Local oscillator signal input
14 FMIN I
Power suplly(VDD=4.5-5.5V)
VDD I
15
Charge pump output
PD O
16
Low-pass filter
I
17 AIN
Amplifier Tr
18 AOUT O
Connected to GND
GND -
19
X'tal oscillator connect (4.5MHz/7.2MHz)
XOUT I
20
MX-G68V/MX-G65V
Function
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