How to change the frame rate of internally generated patterns?

Hello Alex,

The Frame Rate Control register (I2C - 0x19) is applicable for basic color video sequence.Like displaying a Static Image or Internal Test Pattern or a video from external HDMI input.

For the pattern sequence i.e., 1:1 o/p mode the above register not come into the picture. This document talks about http://www.ti.com/lit/an/dlpa042/dlpa042.pdf how the pattern sequence is working.

In another post you have mentioned http://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/f/850/p/307322/1079069.aspx#1079069 your configuration is working at 60Hz. What did you input the signal to the DLPC300? Have you connected a 60Hz RGB24 bit signal to the parallel port?

Do the following -

1. Run Pattern Sequence using Internal HW generated patterns.

2. Probe the two signals from DLPC300 GREEN_EN I/O A7 and OUTPUT_TRIGGER I/O N9.

3. This will basically tell how the DLP display sequence is running.

The task now is to generate the periodic signals at the RGB24bit parallel port to start displaying the pattern. In short the functionality described in the FPGA document  http://www.ti.com/lit/an/dlpa042/dlpa042.pdf  needs to be replicate in your system.

Regards,

Sanjeev

Hello Alex,

Have editied above post. The information I have provided earlier is incorrect. I was looking more from LightCrafter Kit hardware perspective on how it is configured. Hence myself got confused.

Here is what you need to do for 0x19 register setting to work in pattern sequence mode, to use the internal h/w VSYNC generator signal.

Ensure the register Sequence Sync Mode (I2C: 0x1E) is configured to use the Internal-VSYNC. i.e., Reg[0x1E] = 0x00. If the Reg[0x1E] = 0x01 then it will wait for external VSYNC signal. With this change the register 0x19 setting should be accepted.

Regards,
Sanjeev