Datasheet

16 Atmel LED Drivers-MSL3163/MSL3164
Figure 7. Example of Cascading Multiple Devices to Optimize Common Power Supplies
Direct PWM Control of the LED Strings
An external PWM signal applied to the PWM input allows direct PWM control over the strings when bits PWMEN and
PWMDIRECT are set in PWM Control register 0x1E. This configuration bypasses PHI and GSC, but allows automatic LED
string phase delay using bit D2 of register 0x1E.
The PWM input can also be configured as a gate for the output of the PWM engine using the PWM Global Enable bit D3
of the PWM Control register 0x1E.