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AS1163 Datasheet(PDF) 22 Page - ams-OSRAM AG |
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AS1163 Datasheet(HTML) 22 Page - ams-OSRAM AG |
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22 / 91 page ![]() AS1163 Functional description Datasheet • PUBLIC • Document Feedback DS001075 • v2-00 • 2025-Nov-21 22 / 91 / 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) • Register broadcast writes Any other or incorrect telegrams are ignored. |
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