
TC32306FTG
2015-10-01
94
13.2 Example of Application Circuit 1
is an example of application circuit controlled by MCU. (Bidirectional communication / 3V Use)
Fig 13-2 Example of Application Circuit 1
- Fig 13-2 is SPI Mode and external MCU I/O is connected to SPI control pins of TC32306FTG,
- Fig 13-2 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.
- 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.
- The antenna is use for RX and TX, and this IC controls the antenna switch, 1SV308: Toshiba Corporation.
- About resistors, capacitors and coils values in the circuit, consider referring to the evaluation circuit of section 13.1.
IF
Filt er
Detector
LPF
RSSI
ADC
LPF
BRF
Data
COMP
VCO
Divider
PLL
XO SC
Monit or
SP
I
Reference
clock
IF AMP
PA
MIX
FSK
ASK
LNA
Limiter
RX
TX
0.1µF
0.1µF
SAW
Filter
10
00
pF
10
00
pF
0.1µF
0.1µF
0.1µF
0.1µF
VDD
SW1
1SV308
1SV
3
08
MCU
C3
C5
L1
L2
L3
L4
C
10
C
11
30.32MHz
0.1µF
X1
U1
R1
C6
C1
C2
L6
TC32306FTG
19
20
21
22
24
25
26
27
23
9
8
7
6
4
3
2
5
36
35
34
33
32
31
30
29
28
16
17
18
13
14
15
10
11
12
1
C4
C7
100k
100k
100k
1
00
k
1
00
4.7k
4.7k
1
00
k
DET_
TMONI2
DET_
TMONI3
IO
_
GN
D
D
AT
A
_
IO
D
ET
_
T
M
ON
I1
C
OM
_
VD
D
M
IS
O
M
O
SI
CL
K
CS
D
_
R
EG
X_OUT
X_IN
PLL_
GND
PLL_REG TEST
MODE1 MODE2 RESET
PA
_
GN
D
2
TX_SW
PA
_
GN
D
1
PA
_
OU
T
IF
_
R
EF
A
_
GN
D
A
_
R
EG
A
_
VD
D
_
3
V
RF
_
OU
T
A
_
VD
D
_
5
V
RF_IN
RF_DEC
RX_SW
RSSI_
OUT
3V/5V
DET_
TMONI4
ENB