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AS1181 Datasheet(PDF) 36 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) 36 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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7.3.1
Interrupt sources
AS1181 has the following interrupt sources:
Interrupts 0-15 can be managed with the following registers:
IRQ_ENABLE0 register (Address 0x1A38)
IRQ_STATUS0 register (Address 0x1AA4)
IRQ_HISTORY0 register (Address 0x1AAA)
IRQ_MASK0 register (Address 0x1AB0)
Table 6: Interrupt sources 0-15
Bit
Source
Severity
Interrupt
type
Description
0
fault
Highest
Pulse/level
General FAULT indicator.
Triggered if any of the critical interrupts is set.
Device will remain in FAULT state until the actual fault is
cleared. Entering config_mode or a device reset will clear
FAULT state, however device will enter FAULT state again
if actual FAULT in system is still present.
1
reserved
2
vled_adj_request
Info
Pulse
VLED adjust request interrupt
If idrive_undervoltage is set it indicates too low voltage on
VLED. This interrupt can be used as feedback to the
DCDC converter increasing its output voltage towards
VLED input.
3
asic_test_done
Info
Pulse
RunSelfTest completed
Interrupt indicating self-test is completed
4
boot_complete
Info
Pulse
Startup (Boot) completed
Interrupt indicating if the start-up sequence of the device
has been completed successfully
5
task_done
Info
Pulse
Task done
Information interrupt if any task has been completed by
AS1181. Only triggered in config_mode
6
periodic_test_done
Info
Pulse
Periodic test done (“max_timer”)
Information interrupt to indicate if the periodic BIST has
been completed.
7
illum_start
Info
Pulse
Illumination start of first channel
Information interrupt to indicate start of illumination of the
first channel.
8
illum_end
Info
Pulse
Illumination end of last channel
Information interrupt to indicate end of illumination of the
last channel.



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