2. Soldering the headers
Before using your click board™, make sure
to solder 1x8 male headers to both left
and right side of the board. Two 1x8 male
headers are included with the board in
the package.
1
3
4. Essential features
FM Click™ with it’s
Si4703
IC is a complete
FM radio tuner (from antenna input to stereo
audio output). It supports worldwide FM
band (76 – 108 MHz). The board contains
automatic frequency and gain control, RDS/
RBDS processor, seek tuning and volume
control. All these features make this board
ideal for MP3 players, portable radios, PDAs,
notebook PCs, portable navigations and
many more.
FM
click
1. Introduction
2
Turn the board upside down so that
bottom side is facing you upwards. Place
shorter parts of the header pins in both
soldering pad locations.
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
FM Click
™
is an accessory board in
mikroBUS
™
form factor. It’s a compact and
easy solution for adding broadcast FM radio
tuner to your design. It features
Si4703
FM
radio tuner, two
LM4864
audio amplifiers
as well as stereo audio connector. FM
Click
™
communicates with the target board
microcontroller via
mikroBUS
™
I
2
C (SDA,
SCL), INT, RST, CS and AN lines. The board
is designed to use 3.3V power supply only.
LED diode (GREEN) indicates the presence
of power supply.
3. Plugging the board in
Once you have soldered the headers your
board is ready to be placed into desired
mikroBUS™ socket. Make sure to align the
cut in the lower-right part of the board
with the markings on the silkscreen at the
mikroBUS™ socket. If all of the pins are
aligned correctly, push the board all
the way into the socket.
click
www.mikroe.com
FM click Manual
ver. 1.01
BOARD
0 100000 023785
5. FM Click™ Board Schematic
6. Earphones and antenna
VCC
R2
4K7
VCC
R3
4K7
VCC
R4
10K
C4
10pF
X1
C5
10pF
VCC
C6
100nF
GPIO2
GPIO1
NC
GPIO1
GPIO2
GPIO3
#RST
#SEN
SCLK
SDIO
RCLK
VIO
NC
VA
FMIP
GND
RFGND
LOUT
GND PAD
ROUT
GND
GND
RST
SEN
VDD
C7
100nF
C8
100nF
20K
C10 100nF
10uF
U1
32.768KHz
R5
1
2
3
4
U2
LM4864
Vo2
GND
Vdd
Vo1
VCC
8
7
6
5
FM antenna is provided through the earphones
cable (recommended length between 1.1 and
1.45 m). The board supports 3 and 4 conductor
E3
10uF
FP1
FERRITE
1
2
3
4
FP2
FERRITE
STEREO SWITCH CONN
CN1
SHTDWN
BYPASS
IN+
IN-
R6
20K
earphones with pinout as shown in schematic.
Earphones are not included in the package
E1
10uF
U3
C3
SCLK
SDIO
C11 100nF
10uF
1nF
Si4703
R7
1
2
3
4
LM4864
Vo2
GND
Vdd
Vo1
VCC
8
7
6
5
E2
C9
100nF
20K
SHTDWN
BYPASS
IN+
IN-
R8
20K
7. Code Examples
Once you have done all the necessary
preparations, it’s time to get your click
board up and running. We have provided
the examples for mikroC, mikroBasic and
mikroPascal compilers on our
Libstock
website. Just download them and you are
ready to start.
E4
10uF
E6
10uF
E5
R9
10K
VCC
L1 270nH
4
VCC
2
4
Antenna
1
Pin Number
GPIO2
#RST
#SEN
AN
RST
CS
SCK
MISO
MOSI
+3.3V
GND
PWM
INT
TX
RX
SCL
SDA
+5V
GND
GPIO1
SCLK
SDIO
VCC
VCC
VCC
R1
2K2
C2
100nF
C1
22nF
LD1
1
Left Audio
2
Right Audio
.com
8. Support
MikroElektronika offers
Free Tech Support
(www.mikroe.com/esupport)
until the
end of product lifetime, so if something goes
wrong, we are ready and willing to help!
Description
4
Pin Number
Description
1
Left Audio
2
Right Audio
3
3
Antenna
2
4
1
MIK ROBUS DEVICE CONN.
Antenna
MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specification and information contained in the present schematic are subject to change at any time without notice. Copyright © 2013 MikroElektronika. All rights reserved.