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13.3 Example of Application Circuit 2
is an example of application circuit controlled by MCU. (For receiving only / 3V Use)
Fig 13-3
VDD
30.32MHz
0.1µF
100k
100k
100k
MCU
- Fig 13-3 is SPI Mode and external MCU I/O is connected to SPI control pins of TC32306FTG,
- Fig 13-3 is 3V Use. For 5V Use, change the voltage supply connections by referring Fig 13-1.
- Do not connect DC voltage except ground to RF_IN pin.
- PA_OUT pin is open.
- MCU also controls RESET pin and ENB pin.
- MCU accepts a signal from DET_TMONI1 pin as an interrupt signal.
- MCU monitors RSSI_OUT pin signal.
- About resistors, capacitors and coils values in the circuit, consider referring to the evaluation circuit of section 13.1.
X1
27
26
25
24
X_OUT
X_IN
PLL_
PLL_REG TEST MODE1 MODE2 RESET TX_SW
GND
Reference
28
XOSC
clock
29
ASK
TX
30
FSK
RX
PLL
Data
31
COMP
TC32306FTG
BRF
32
LPF
Detector
33
Limiter
34
LPF
ADC
35
Monitor
36
DET_
DET_
DET_
ENB
TMONI2
TMONI3
TMONI4
1
2
3
4
Fig 13-3 Example of Application Circuit 2
95
23
22
21
20
19
PA
Divider
VCO
IF
Filter
IF AMP
MIX
RSSI
LNA
RSSI_
RX_SW
RF_DEC
RF_IN
3V/5V
OUT
5
6
7
8
9
TC32306FTG
18
17
16
0.1µF
15
14
13
0.1µF
0.1µF
12
11
R1
10
L3
C5
RX_IN
C6
2015-10-01
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