10.2.2.3 SCLK and GCLK Frequency
SCLK is the serial data shift-in clock signal; and GCLK is the PWM-control reference-clock signal. Equation 3 shows the minimum frequency requirement for GCLK and SCLK. See TLC6946 Technical Reference Manual for more details.
Equation 3.
where
- fGCLK is the minimum GCLK frequency for single-edge operating mode
- fSCLK is the minimum SCLK frequency
- m is the GCLK number of each sub-period, determined by the PWM mode selected
- fVR is the visual refresh rate of the entire cascading series
- N is the number of cascaded TLC6948 devices
- n is the number of scan lines
- fFPS is the frame rate