AS1163 datasheet(47/91 Pages) AMSOSRAM

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AS1163

Functional description

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DS001075 • v2-00 • 2025-Nov-21

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6.9.2

SYNC operation

Upon reception of a SYNC event, either from an external pin or OSP command, the device

activates all drivers with pre-configured settings.

Default state of the SYNC line is high. To give a sync, the SYNC line is pulsed low for at least

3 clocks a 2.4MHz (1.25µs).

6.10

Multicasting

In addition to the broadcast, multicast groups can be defined. Devices can be assigned to one

or more groups within this range via a dedicated command. Once assigned, these devices

react to both the general broadcast address 0x000 as well as to the multicast group address.

Multicast group addresses are within the range from 0x3F0 to 0x3FE.

There are 15 different addresses for multicast groups available. A node can be registered to

any of these by setting the respective bit in the 16-bit mask register:

Table 14: Multicast group address

Bit

Group

3FE

3FD

3FC

3FB

3FA

3F9

3F8

3F7

3F6

3F5

3F4

3F3

3F2

3F1

3F0

Messages addressed to a multicast group are always fast-forwarded.

6.11

Diagnostics

All error/diagnostic modes will set a unique flag bit if it occurs. An automatic transition into

SLEEP mode & disabling of the LED can be configured via the SETUP register. The last PWM

parameters are retained. The flag bit will be cleared by a status readout (READSTAT,

READTEMPSTAT). If the failure is still present the flag is raised again. RESET also clears all

flags.

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