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CA-MXS3BK
Mi 1C7218 (1C102) : PLL Synthesizer
1. The main function
(1) It makes the local oscillation frequency by the control data from IC801.
(2) Decode the control signal and transmit the signal for receiving conditions.
(3) For the best tuning, count the internal-frequency and transmit the data to IC801.
Phase Detector
XIN
X OUT
Reference
!
1
Driver
Charge Pump
tai
ce
vss
24
Ay22
'
PDI
!
aC |
ae
SU
=
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+
Swallow Counter
as
DO
vob
1/16, 1/17 Abits
!
i
i}
We
FM-OSC IN
1
|—
H
!
een
erate
.
i]
7
I
TONED
AM-OSC IN
7
12bit Programmabl
aC |
FIs
STOP IN
IF Req.
13 4
Divider
—|
1
POWER
FM IF
!
ty
t
1
asc
AM IF
ee
5
ted
Universal
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MONO
LW
; 2
Shift Register & Latch
|
Counter
<0"
acy)
13) MW
44
23
5s&
4
9
10
11
12
13
#14 17
7
8
4. Terminal
Functions
ein no. | symbo
Crystal oscillator (7.2MHz).
1-36
(No. 20373)
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