SI47XX-EVB Datasheet, PDF (28/164 Pages) Silicon Laboratories – Thank you for purchasing the Silicon Laboratories

Si47xx-EVB
3. Recommended Hardware Setup
The Si47xx-EVB can be configured for FM transmit, FM receive, WB receive, or AM/SW/LW receive. The following
is a description of how to correctly configure the device for either mode of operation.
3.1. Hardware Setup for FM Transmitter Test
RF
Analyzer
SMA Cable
J1
FM OUT
J28
FM IN
Si471x/2x
Daughterboard
Si47xx
Baseboard
Analog
Audio
Generator
RCA Cable
J6
RCA OUT
J7
RCA IN
Jumpers
Setting
DCLK
TX
TX
GPIO3
J41
RX
RX
J44 J45
Note: J44 and J45 are
automatically configured in
EVB Rev1.3 and later
J19
S/PDIF
Audio
Generator
J30
J76
USB
SW1
EXT pwr
Terminal
Block (TB)
J79
USB Cable
USB pwr
J78
EXT Jack
PC
w/ USB
port
Figure 19. Hardware Setup for FM Transmitter Test
Instructions for Si471x/2x daughtercards:
1. Connect the USB cable from PC to the EVB USB connector J79. The USB connection will serve as a dual purpose:
supplying the power to the EVB and controlling the EVB.
2. Connect an analog audio generator to the RCA input connector J7 using an RCA cable or connect an SPDIF digital audio
generator to connector J19 using an SPDIF cable.
3. Connect an RF analyzer from the FM output SMA connector J1 using an SMA cable.
4. J19 and J30 S/PDIF connections are no longer supported on EVBs as of February 14, 2011.
28
Rev. 0.8