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News >> LED downlight power memory |
LED downlight power memory |
In order to prevent power LED downlights dynamic scanning process to register to access the external bus, LED downlight power conflict between the access register is updated when the data shows that there is also a dual cache structure, the scanning process when the power LED Downlight is a memory access, the bus interface is exposed to the other on-chip memory.
Power LED Downlight particular scan the external interface control register operation, causing the exchange of two registers, while also able to update the display, memory, using two on-chip static RAM - IDT71V424 (512k ¡Á 8), low EPM1270 and memory interface 8 using multiplexed address data to save EPM1270 of I / O pins.
LED downlight power stored in memory before the start of 26k each point is color information per pixel 3-byte 24 indicates the color, each byte corresponding to one pixel RGB 3 pixels color brightness values are stored after 256k started ¦Ã correction after correction of dot correction data.
Brightness LED downlight power EPM1270 extended by the entire screen brightness control register, each TLC5941 writes, EPM1270 control readout pigment value of each pixel of the display unit's start with the current corresponding memory space, and then register with the brightness value calculation 12 obtained after the luminance value of each channel TLC5941 (control brightness and color of each pixel).
LED downlight power after the adoption of parallel / serial conversion output, while maintaining Mode = 0; after output brightness, LED downlight power to read 6-point calibration data from the 256k corresponding space, and after / serial conversion output, while maintaining Mode = 1, thus completing the output of a channel data. LED downlight power after a line corresponding to all of the channel data output is completed, pause the serial clock, set Mode = 0, in XLAT feet generates a positive pulse, then set Mode = 1, generates a positive pulse in XLAT feet, respectively, the data lock TLC5941 deposited inside the corresponding control registers, data output line is completed.
Guangzhou, a sharp Optimax Technology Co., Ltd. (www.crilite.com) - specialized in producing LED waterproof power supply, LED downlights LED panel lights power supply and other products.
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