SI5347-EVB Datasheet, PDF (4/21 Pages) Silicon Laboratories – Powered from USB port or external

Si5347-EVB
5. Status LEDs
Table 2. Si5347-EVB Status LEDs
Location Silkscreen Color
D27 5VUSBMAIN Blue
D22
3P3V
Blue
D26
VDD DUT Blue
D25
INTR
Red
D21
READY Green
D24
BUSY
Green
D2
LOS_XAX- Blue
B_B
D5
LOL_AB
Blue
D6
LOL_BB
Blue
D8
LOL_CB Blue
D11
INTRB
Blue
D12
LOL_DB Blue
Status Function Indication
Main USB +5 V present
DUT +3.3 V is present
DUT VDD Core voltage present
MCU INTR (Interrupt) active
MCU Ready
MCU Busy
Loss of Signal at XAXB input
Loss of Lock - DSPLL A
Loss of Lock - DSPLL B
Loss of Lock _ DSPLL C
Si5347 Interrupt Active
Loss of Lock _ DSPLL D
D27, D22, and D26 are illuminated when USB +5 V, Si5347 +3.3 V, and Si5347 Vcore supply voltages,
respectively, are present. D25, D21, and D24 are status LEDs showing on-board MCU activity. D2 indicates loss of
signal at XAXB input (either crystal osc or external reference). D5, D6, D8, D12 indicate loss of lock for one of 4
internal DSPLLs (A–D). D11 indicates Si5347 interrupt output is active (as configured by Si5347 register
programming). LED locations are highlighted below with LED function name indicated on board silkscreen.
4
Rev. 1.1