TH-K20A/K20E
8
FM IC: TA31136FNG (TX-RX unit IC200)
Pin No.
Port Name
I/O
Function
1
OSCIN
I
2nd Local oscillator input
2
OSCOUT
O
2nd Local oscillator output
3
MIXOUT
O
MIX output
4
VCC
-
Power supply (5.0V)
5
IFIN
I
2nd IF input and decoupling
6
DEC
-
2nd IF input and decoupling
7
FILOUT
O
INVERTER AMP output
8
FILIN
I
INVERTER AMP input
9
AFOUT
O
Demodulate signal output
10
QUAD
I
Phase shift signal input of FM
demodulator
11
IFOUT
O
Output terminal of IF AMP
12
RSSI
O
This terminal outputs DC
13
NOISEDET
-
level according to input (Not use)
14
NOISEREC
-
signal level to IF AMP
15
GND
-
Ground
16
MIXIN
I
1st IF signal input
D/A Converter IC: R2A20178NP
(TX-RX unit IC300)
Pin No.
Port Name
I/O
Function
1
Vin2
I
FROM AF fi lter signal input
2
VDD
-
Power supply voltage (5.0V)
3
LD
I
Load enable signal input
4
CLK
I
Control data input
5
DI
I
Control clock input
6
Vin3
I
From MIC AMP and limiter signal
input
7
Vout3
O
Load enable signal input
8
Vout4
O
Tone deviation adjust
9
Vin4
I
Tone signal input
10
Vin5
I
Connect to ground
11
Vout5
O
VCO assist voltage adjust
12
Vout6
O
TCXO frequency adjust
13
Vin6
I
Connect to ground
14
VDAREF1
-
Reference voltage 1 for DAC
(1.8V)
15
VDAREF2
-
Reference voltage 1 for DAC
(5.0V)
16
/RESET
I
Reset
17
GND
-
Ground
18
Vin7
I
Connect to ground
19
Vout7
O
RX BPF tuning adjust
20
Vout8
O
TX power adjust
21
Vin8
I
Connect to ground
22
Vin1
I
From MIC output
23
Vout1
O
MIC level contorol and mute
24
Vout2
O
RX AF mute control
PLL IC: MB15E03SL-E1 (TX-RX unit IC1)
Pin No.
Port Name
I/O
Function
1
OSCIN
I
Programmable reference divider
input
2
OSCOUT
O
Oscillator output
3
VP
-
Power supply voltage input for the
charge pump
4
VCC
-
Power supply voltage (3.0V)
5
DO
O
Charge pump output
6
GND
-
Ground
7
XFIN
I
Prescaler complementary input
which should be grounded via a
capacitor
8
FIN
I
Prescaler input
9
ClOCK
I
Clock input for the 19-bit shift reg-
ister
10
DATA
I
Serial data input using binary
code
11
LE
I
Load enable signal input
12
PS
I
Power saving mode control
This pin must be set at “L” at
Power-ON.
13
ZC
I
Forced high-impedance control
for the charge pump
14
LD/FOUT
O
Lock detect signal output
15
P
O
Phase comparator N-channel
open drain output for an external
charge pump (Not use)
16
R
O
Phase comparator CMOS output
for an external charge pump (Not
use)
SEMICONDUCTOR DATA
Summary of Contents for TH-K20A
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