SI5XX-PROG-EVB Datasheet, PDF (7/20 Pages) Silicon Laboratories – Windows-compatible software control and device programming

3.5. Status Signals
There are four LEDs on the Si5xxPROG-EVB that report visual status as listed in Table 3 and shown in Figure 1b.
Upon powerup, D1 should be illuminated.
Table 3. Si5xx-PROG-EVB LEDs
LED
D1
D2
D3
D4
ON
VDD3p3 volts is present
Ext3p3V volts is present
Reserved
USB access in progress
OFF
VDD3p3 volts is NOT present
Ext3p3V volts is NOT present
Reserved
No USB access in progress
3.6. Jumpers
There are seven jumper locations on the Si5xx-PROG-EVB as listed in Table 4. The default or pre-loaded jumpers
are shown in Figure 1a.
Table 4. Si5xx-PROG-EVB Jumpers
Jumper Block Reference
Function
J5
Manual (on-board) VDD_DUT adjust (see
Table 1)
J11
VDD_DUT select:
1-2: External voltage (from J1)
2-3: On-board regulator
J13
I²C/Vc selector:
1-2: I²C communication
3-4: Ext Vc input (Si57x)
J16
Output enable (Si57x):
1-2: OE is HIGH
3-4: OE is LOW
J17
Manual shutdown of I²C port for Si514 (also
controllable via SW)
J19
Manual shutdown of I²C port for Si57x (also
controllable via SW)
J20
I²C communication access port
3-4: SCL connection to MCU
5-6: SDA connection to MCU
Rev. 0.3
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