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mb_olre16 [2016/09/24 06:21] antichambre [Data Transfer] |
mb_olre16 [2016/09/24 16:38] antichambre [Core-External Driving Concept : TLC5958] |
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We expect 16 RGB LED rings encoders. So let's do the math : | We expect 16 RGB LED rings encoders. So let's do the math : | ||
**16 Encoders * 32 LEDs * 3 colors = __1536 lines__ ** \\ | **16 Encoders * 32 LEDs * 3 colors = __1536 lines__ ** \\ | ||
- | Let's transpose this to a classical matrixed SRIO chain design: | + | Let's transpose this to a classical matrixed SRIO chain design: \\ |
- | **3x16=48 inputs + 32 outputs = __6*DIN + 4*DOUT__ **\\ | + | ** 16 * 3 (cathodes) * 32 (anodes)** \\ |
+ | **= 48 inputs + 32 outputs ** \\ | ||
+ | **= __6*DIN + 4*DOUT__ **\\ | ||
==== Core-External Driving Concept : TLC5958 ==== | ==== Core-External Driving Concept : TLC5958 ==== | ||
- | In theory it's possible to drive such a SRIO setup but in fact buses and resistors/R networs are very hard to place and will consume a lot of process. \\ | + | In theory it's possible to drive such a SRIO setup but in fact buses and resistors/R networks are very hard to place and it will consume a lot of contant refresh process. \\ |
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After a look on the different brands and models of LED driver IC **[[http://www.ti.com/product/TLC5958|Texas Instruments TLC5958]]** appeared as a good compromise to drive a lot of RGB LEDs without overloading the core. Designed to be a LED Display driver, its original purpose and features would allow large-sized RGB-LED-based display setups\\ | After a look on the different brands and models of LED driver IC **[[http://www.ti.com/product/TLC5958|Texas Instruments TLC5958]]** appeared as a good compromise to drive a lot of RGB LEDs without overloading the core. Designed to be a LED Display driver, its original purpose and features would allow large-sized RGB-LED-based display setups\\ |