VS-DT7R
29
4.14 LC72136N (IC2) : PLL frequency synthesizer
4.14.1 Terminal layout
4.14.2 Block diagram
4.14.3 Pin function
Pin No.
Symbol
I/O
Function
1
XOUT
I
X'tal oscillator connect (75kHz)
2
FM
O
LOW:FM mode
3
CE
I
Chip enable, When data output/input for 4pin(input) and 6pin(output): H
4
DI
I
Input for receive the serial data from controller
5
CK
I
Sync signal input use
6
DO
O
Data output for Controller, Output port
7
ST/MONO
O
"Low": MW mode
8
AM/FM
O
Open state after the power on reset
9
LW
I/O Input/output port
10
MW
I/O Input/output port
11
SDIN
I/O Data input/output
12
FM/AM IF
I
IF counter signal input
13
IF REQ
O
IF signal output
14
-
Not use
15
AMOSC
I
AM Local OSC signal output
16
FMOSC
I
FM Local OSC signal input
17
VDD
-
Power supply(VDD=4.5-5.5V), When power ON:Reset circuit move
18
PD
O
PLL charge pump output(H: Local OSC frequency Height than Reference
frequency. L: Low Agreement: Height impedance)
19
LPFIN
I
Input for active low pass filter of PLL
20
LPFOUT
O
Output for active low pass filter of PLL
21
VSS
-
Connected to GND
22
XIN
I
X'tal oscillator connect (75KHz)
Summary of Contents for BC72
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