AN921 Datasheet, PDF (23/24 Pages) Silicon Laboratories – Configurable Logic Unit

AN921: Configurable Logic Unit
Biphase Mark Encoder/Decoder
6.3.2 Firmware Example
The Biphase Mark decoder firmware example can be found in Simplicity Studio under [Software Examples]>[Kit: EFM8LB1/
EFM8BB3 Starter Kit]>[Configurable Logic]>[Biphase Mark Decoder]. The example uses the CLU0, CLU1, CLU2, CLU3, Timer 2,
Timer 4, Timer 5, and the previously-discussed configuration to implement the Biphase Mark decoder.
The picture below shows the scope capture of the BMC, CLOCK (SPI SCK), and DATA (SPI MOSI). The first rising edge of CLOCK is
ignored as the SPI is not yet enabled until after the first transition of the BMC signal.
Figure 6.9. Scope Capture of BMC (CH3), CLOCK (CH1) and DATA (CH2) Signals
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