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AS1181 Datasheet(PDF) 28 Page - ams-OSRAM AG

Part # AS1181
Description  8-channel LED/VCSEL driver with enhanced safety features
PDF  92 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS1181 Datasheet(HTML) 28 Page - ams-OSRAM AG

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AS1181
Functional description
Datasheet • PUBLIC • Document Feedback
DS001139 • v3-00 • 2026-Apr-01
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7.1.6.1
Trigger adjustment for the PWM mode with 2 strobe inputs
In default case the illumination sequence is triggered by the first rising edge of either input. The
triggering moment can be adjusted by setting the pwm_trig field in the PWM_CTR register
(Address 0x1A32) to non-zero value.
•
0x0 – Default, STROBE_PWM1 or ID2_PWM2: Illumination is triggered by the first rising
edge of either signal.
•
0x1 – STROBE_PWM1 and ID2_PWM: Illumination is triggered in the moment both
signals become high.
•
0x2 – STROBE_PWM1 only: Illumination for both groups is triggered by the rising edge of
STROBE_PWM1 input.
•
0x3 – AUX only: Illumination for both groups is triggered by the ID2_PWM2 signal rising
edge.
The skew between the rising edges of both inputs in all cases shall be less than 10µs.
If the other signal edge doesn't come within the skew window, the illumination sequence for
this channels group won't start on this cycle.



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