I am using cascaded TLC5941s. The data sheet is not very clear about when you clock the greyscale data into it. Can you clock in the new data during the pwm cycle, ie while GSCLK is running? Or do you have to do it during the blanking period after the 4096 GSCLK pulses? I can't get it to work if clocking in during the pwm cycle, it only works if I do it during the blanking period. However this reduces the overall pwm frequency of the LEDs and creates an "off" time while I reload the greyscale data. Should it work?