JVC KD-SX841R Service Manual page 44

KD-SX841R
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4.15 TB2118F-X (IC31) : PLL 3 7 63 1515 0
• Terminal Layout
• Block diagram
osc
2
1
XO
24
XI
FM VCO
15
AMVCO
16
IFC 13
TE
L 13942296513
CE
3
DIN
4
CK
5
DOUT 6
• Pin Function
Pin
Symbol I/O
No.
1 XOUT O Crystal oscillator pin
2 OSC - Non connect
3 CE I Chip enable input
4 DI I Serial data input
5 CK I Clock input
6 DOUT O Serial data output
7 SR O Register control pin
8 I/01 I/O I/O ports
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9 I/02 I/O I/O ports
10 OUT1 - Non connect
11 OUT2 - Non connect
12 VDD2 - Single power supply for REF. frequency block 24
1-44 (No.49790)
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Buff.
ON/OFF
OSC circuit
Reference Counter
AMP
Prescaler
AMP
AMP
20-bit BINARY COUNTER
Resistor 1
Resistor 2
Serial
Interface
I/O PORT
8
7
I/O -1
SL
Function
x ao
y
. i
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8
Phase
Comparator
4-bit
Swallow counter
12-bit
Programmable counter
Q Q
3 6 7 1 3
22-bit
40bit shift register
OUTPUT PORT
Vdd
10 11 12
9
14
vdd
I/O -2 out-1 out-2 vdd2
Pin
Symbol I/O
No.
13 IFC I IF signal input
14 VDD - Power pins for digital block
15 FMIN I FM band local signal input
16 AMIN I AM band local signal input
17 DGND - Connect to GND (for digital circuit)
18 FMCP O Charge pump output for FM
19 Vt - Tuning voltage biased to 2.5V.
20 AMCP O Charge pump output for AM
21 VCC - Power pins for analog block
u163
22 RF I Ripple filter connecting pin
23 AGND - Connect to GND (for analog circuit)
.
XIN I Crystal oscillator pin
2 9 9 4 2 8
Constant
power supply voltage
AM CP.
20
switch
RF
22
19
Vt
1 5 0 5 8 2 9 9 4
+
-
18
FM cp
switch
Vcc
17
21
23
a-gnd
d-gnd vcc
Function
m
co
9 9
2 8 9 9