User guide

Si471x-EVB

2 Preliminary Rev. 0.4

Figure 1. Baseboard Connectors, Jumpers and Devices (Alpha 2)

Baseboard Power Connectors/Devices:

J79 USB connector (using USB power)

J78 External power connector

J76 Terminal block (TB) power connector

SW1 Switch to select between USB power or Ext power

R73 Potentiometer to adjust Vio voltage

R74 Potentiometer to adjust Vdd voltage

J61 Jumper: Baseboard power select (3.3 V or terminal block (TB))

J68 Jumper: Si471x VIO power select (3.3 V or adjustable voltage via R73 or TB)

J69 Jumper: Si471x VDD power select (3.3 V or adjustable voltage via R74 or TB)

J79 SW1 J78

J76

J74 PB1

R74

R73

J69

J68

J61

J44

J45

J30

J19

J5/

J13

J41

J52

J54

J57

J27

J75

U18

U10