User guide

Si471x-EVB
Preliminary Rev. 0.4 5
3.1. Jumper or Solder Bump Configuration
The EVB for the Si471x has two different ways to setup jumpers:
1. Berg stick jumper (if the Bergstick headers are installed).
2. Solder bump jumper.
If you have an EVB that doesn't have the header installed, then use the solder bump jumper to select the desired
settings. The solder bumps and Bergstick jumpers exist in parallel, so only use one of them. If using the Bergstick
jumpers, then remove solder from the solder bumps associated with live Bergstick jumpers. If using the solder
bumps, then please make sure there are no jumpers placed on the associated Bergstick jumpers.
Figure 4. Solder Bump Jumper (circled)
Table 1. EVB Configuration Matrix
Jumper Description Choices Type Default Setting
J61
Select baseboard power
source
+3.3 V/terminal block Jumper +3.3 V
J68
Select Vio power source
+3.3 V/terminal
block/adjustable via R73
Jumper +3.3 V
J69
Select Vdd power source
+3.3 V/terminal
block/adjustable via R74
Jumper +3.3 V
J15
Select analog audio in
RCA in/Line in Jumper RCA In
J31
Select analog audio in
RCA in/Line in Jumper RCA In
J41
Select GPO3 connection
GPIO3/DCLK Jumper GPIO3
J44
Select audio 1 configuration
TX/RX Jumper RX
J45
Select audio 2 configuration
TX/RX Jumper TX
J52
Select RClk source
Int RCLK/Ext RClk Solder bump Int RClk
J57
Disable Int RClk
Enable/Disable Jumper unconnected (Enable)