AN2708 Datasheet, PDF (31/42 Pages) STMicroelectronics – 2X36 W digital dimmable ballast with L6574 and ST7FDALI

AN2708
Figure 22. Slave flowchart
Start
Failure=1
Basics of DALI
Main
Y
Pin
PB1=low
level
N
New Frame Received
Dali Peripheral
Process
Command
PWM
routine
Pulse on EN1(OFF) or
EN2 (ON) change pin
configuration
Y
ON/
OFF
N
Other indirect
Y
arc power control
commands
N
N
Query
command
Send Lamp
OK
Y
N
Failure=1
Y
Change
configuration
of PB3,PB4 pin
Send Lamp
Failure
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