
AS3693B
V sync
Hs ync
P WM duration = t
vsync
austria micro systems
P WM
Reset
Delay =N * t
hsync
P*t
hsync
>t vsync
P WM
reset with Vsync
P WM s ignal: High time = M * t
P WM P eriode = t vsyunc
hsync
P*t hsync <t vsync
Repetitive PWM
reset with P * t hsync
P WM
P WM s ignal: High time = M * t
P WM P eriode = P * t hsync
hsync
Restart
Example: Two PWM output channels with fixed delays and variable high times (HT)
PWMINVERT = 0
PWMINVERT = 1
7.3.1.1 SYNC – mode PWM – generator update cycle.
-Store new values from serial interface
VSYNC
Delayed
VSYNC
(internal)
PWM
-Update delay immediately
Update HighTime, Period
-no new data
-new data
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Revision 1.21 / 2011-09-30
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