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ASL5015FHN 数据表(PDF) 43 Page - NXP Semiconductors |
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ASL5015FHN 数据表(HTML) 43 Page - NXP Semiconductors |
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43 / 69 page  NXP Semiconductors ASL5xxxyHz Matrix LED Controller (MLC) ASL5xxxyHz All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 2.1 — 5 February 2019 43 / 69 Table 33. MLCs linked to the bits Byte_0 (MSB in the CAN message) MLC_0 MLC_1 MLC_2 MLC_3 MLC_4 MLC_5 MLC_6 MLC_7 Byte_1 MLC_8 MLC_9 MLC_10 MLC_11 MLC_12 MLC_13 MLC_14 MLC_15 Byte_2 MLC_16 MLC_17 MLC_18 MLC_19 MLC_20 MLC_21 MLC_22 MLC_23 Byte_3 MLC_24 MLC_25 MLC_26 MLC_27 MLC_28 MLC_29 MLC_30 MLC_31 Refresh the Limp Home mode watchdog timer (register 3Ch) right before sending any MLC to sleep, to avoid reaching the timeout setting during the send-to-sleep process. During sleep mode, the watchdog timer is stopped; a refresh action is not required during this mode. If any refresh action is intended during sleep mode, the MLC does not take care of it, because it waits only for a wake-up message. 13.1 CAN message configuration for Partial_Sleep and Partial_Wake Both messages are broadcast and received by all the MLCs connected to the CAN bus. CAN message for Partial-Sleep: Command –> 42 DLC –> 4 Data byte_0 (MSB) –> Byte0 Data byte_1 –> Byte1 Data byte_2 –> Byte2 Data byte_3 –> Byte3 CAN message for Partial-Wake: Command –> 43 DLC –> 4 Data byte_0 (MSB) –> Byte0 Data byte_1 –> Byte1 Data byte_2 –> Byte2 Data byte_3 –> Byte3 In case of waking any of the MLCs up, a broadcast clock trimming action must be performed. The clock trimming is done by three consecutive messages from the microcontroller with no data on them (dummy trimming message). The preamble of these messages is used to trim the CAN clock and synchronize all the MLCs in the bus. Note: When partial networking is based on message recognition, the MLC continues to have part of the analog and CAN controller activated during sleep mode. 14 Nonvolatile Multitime Programmable Memory (MTP) The nonvolatile Multitime Programmable Memory (MTP) is used to store: • Predefined coefficients for the PWM dimming curves (only in ASL50xxyHz — Smart mode) |
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