Hey all,
Just need someone to reinterpret some details for me from this datasheet for a 24 channel constant current led driver, DM163.
Basically the device lets you shift in data which is used to output PWM to 24 LEDs. I want to use it (or many of them) with an FPGA to create a small LED display.
Here is my major issue:
If I wanted to use just 8 bits of data for each LED and didn't care about the dot correction, can I shift in 6 ones into the dot correction register at the start of the program and then forget about that register for the rest of the program? Or is it a case of reloading the dot correction every time I put any new data in?
I just don't want to waste half my clocks shifting in ones every time for something I don't really need/want, and I know that my display size is dependent on how long it takes to shift a frame into the drivers.
Also, can I do it the other way around and make the 8 bit register all ones and use the 6 bit register for image data?
Hopefully one of you bright sparks will sort this out for me.
Cheers, Josef
Just need someone to reinterpret some details for me from this datasheet for a 24 channel constant current led driver, DM163.
Basically the device lets you shift in data which is used to output PWM to 24 LEDs. I want to use it (or many of them) with an FPGA to create a small LED display.
Here is my major issue:
If I wanted to use just 8 bits of data for each LED and didn't care about the dot correction, can I shift in 6 ones into the dot correction register at the start of the program and then forget about that register for the rest of the program? Or is it a case of reloading the dot correction every time I put any new data in?
I just don't want to waste half my clocks shifting in ones every time for something I don't really need/want, and I know that my display size is dependent on how long it takes to shift a frame into the drivers.
Also, can I do it the other way around and make the 8 bit register all ones and use the 6 bit register for image data?
Hopefully one of you bright sparks will sort this out for me.
Cheers, Josef