mb_olre16
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
|
mb_olre16 [2016/09/24 16:37] antichambre [Core-External Driving Concept : TLC5958] |
mb_olre16 [2016/09/25 07:53] antichambre [GrayScale Clock] |
||
|---|---|---|---|
| Line 37: | Line 37: | ||
| 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. \\ | 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. \\ | ||
| - | \\r | + | \\ |
| 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\\ | ||
| \\ | \\ | ||
| Line 154: | Line 154: | ||
| CORE provides a regular Clock with PWM @2MHz .The 12bit counter U16 counts until 257 and trigs U1 wich is a monostable, U1 switchs, resets the counter and stops the clock counter input by U17(D-Flipflop). \\ | CORE provides a regular Clock with PWM @2MHz .The 12bit counter U16 counts until 257 and trigs U1 wich is a monostable, U1 switchs, resets the counter and stops the clock counter input by U17(D-Flipflop). \\ | ||
| \\ | \\ | ||
| - | After a certain time given by the RC couple on U1, U1 switch back and restarts the counter. | + | After a certain time given by the RC couple on U1, U1 switchs back and restarts the counter. |
| By this way we are sure to count the exact 257 Clocks needed and the interval between 2 segments is fixed by the trimpot U19.\\ | By this way we are sure to count the exact 257 Clocks needed and the interval between 2 segments is fixed by the trimpot U19.\\ | ||
| \\ | \\ | ||
mb_olre16.txt ยท Last modified: 2019/04/21 08:50 by antichambre
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
