AS1163 datasheet(22/91 Pages) AMSOSRAM

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AS1163

Functional description

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DS001075 • v2-00 • 2025-Nov-21

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6.3

Device state overview

Once the VDD supply is above the UVLO threshold and after an internal pre-defined startup

time the device is ready for communication. The device does not lose functionality until VDD

drops below the typical value of 2.6V. Internal startup time is below 1 ms.

Figure 8: Device state machine

6.3.1

UNINITIALIZED state

The device will reach the UNINITIALIZED state after power up, a power cycle from any other

state or via RESET command. In this state the register content is lost and reset to defaults.

PWM values are 0, LED drivers are disabled. Address is 0. From application point of view, the

nodes in the daisy chain must be assigned an address and each node is waiting for the first

correct telegram. Nodes are accepting only a limited number of telegrams in this state:

•

INITBIDIR or INITLOOP (bi-directional or loop back mode respectively)

•

RESET

•

CLRERROR

•

P4ERRBIDIR or P4ERRLOOP (bi-directional or loop back mode respectively)

•

Any other or incorrect telegrams are ignored.

AS1163 Datasheet(PDF) 22 Page - ams-OSRAM AG