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ASL5015FHN 数据表(PDF) 18 Page - NXP Semiconductors |
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ASL5015FHN 数据表(HTML) 18 Page - NXP Semiconductors |
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18 / 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 18 / 69 Address Register D7 D6 D5 D4 D3 D2 D1 D0 Default 21h STARTPOS9 STARTPOS9[7:0] 00000000 22h STOPPOS9 STOPPOS9[7:0] 11111111 23h DELAY9 DELAY9[7:0] 00000000 24h CURVID10 SHIFT10[2:0] AUTO10 NOW10 CURVEID10[2:0] 00000000 25h STARTPOS10 STARTPOS10[7:0] 00000000 26h STOPPOS10 STOPPOS10[7:0] 11111111 27h DELAY10 DELAY10[7:0] 00000000 28h CURVID11 SHIFT11[2:0] AUTO11 NOW11 CURVEID11[2:0] 00000000 29h STARTPOS11 STARTPOS11[7:0] 00000000 2Ah STOPPOS11 STOPPOS11[7:0] 11111111 2Bh DELAY11 DELAY11[7:0] 00000000 2Ch CURVID12 SHIFT12[2:0] AUTO12 NOW12 CURVEID12[2:0] 00000000 2Dh STARTPOS12 STARTPOS12[7:0] 00000000 2Eh STOPPOS12 STOPPOS12[7:0] 11111111 2Fh DELAY12 DELAY12[7:0] 00000000 SHIFTx: These three bits determine the shift value used in the internal PWM generator. The speed of the curve depends on the shift value. When the lowest shift value is selected (2), the fastest curve is performed. Table 5 shows the different possible values. Table 5. SHIFT values SHIFT[2:0] 111 110 101 100 011 010 001 000 Value 2 4 8 16 32 64 128 256 AUTOx: Set this bit to 1 when the channel is already following another curve, so that this new configuration can be followed at the end of the current sequence. NOWx: To implement changes immediately, set this bit to 1. The system will implement the new SHIFT, AUTO and CURVEID to the specific channel/switch immediately and automatically proceed with the PWM calculation. If this bit is set to 0, then all the other values (SHIFT, AUTO and CURVEID) are stored in the shadow register until the current sequence is done and another trigger is set (START command or AUTO bit). CURVEIDx: These three bits are used to identify the curve the channel follows during the fade sequence. With three bits, eight curves can be selected. STARTPOSx: In this register, the start position must be set. The value is referred to as a step from 0 to 255 (8 bits resolution). STOPPOSx: In this register, the stop position must be set. The value is referred to as a step from 0 to 255 (8 bits resolution). Note: Because any curve can be followed in both directions, a fade-in sequence occurs when the start value is smaller than the stop value. As soon as the start value is greater than the stop value, then the sequence is a fade-out one. When using negative coefficients, the curve behavior could change depending on the coefficient values. DELAYx: This 8-bit register is used to add a delay to the sequence start. Because it is an 8-bit register and this delay is related to steps, the delay value is from 0 to 255. The delay |
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