User`s guide

Si47xx-EVB
8 Rev. 0.8
2. Description
Si47xx EVB consists of a baseboard, a daughtercard with the Si47xx part pre-mounted, and, if applicable, an
antenna card. The baseboard is common and shared among all Si47xx EVBs. The following sections refer to both
the images in the figures and the silkscreen on the Si47xx EVB. Please refer to both when using this guide.
2.1. Si47xx Baseboard
Figure 1. Baseboard Connectors, Jumpers, and Devices
Baseboard power connectors/devices:
J79 USB connector (using USB power)
J78 External power connector
J77 Battery connector
J76 Terminal block (TB) power connector
SW1 Switch to select between USB power or Ext power
J61 Jumper: Baseboard power select (3.3 V or TB)
J68 Jumper: Si47xx VIO power select (3.3 V or adjustable voltage via R73 or TB)
J69 Jumper: Si47xx VDD power select (3.3 V or adjustable voltage via R74 or TB)
J79 SW1 J78
J76
J74 PB1
J69
J68
J61
J30
J6
J52
X1
J54
J57
J27
J75
U22 D1
J77