AM335x LCD Passive (STN) Mode Output Format

Hi,

Please check Table 13-7 from the TRM. 8-bit bus width is the maximum supported for Passive (STN) mode.

Hi Biser-san,

Thank you for your reply.

I have understood that 8-bit bus width is the maximum supported for Passive (STN) mode.

Please tell me whether the color output format in Figure 13-14 on TRM (SPRUH73L) is supported in the Passive (STN) Mode.

In Figure 13-4 on TRM (SPRUH73L), the Passive (STN) Mode does not support 24-BPP.

Best regards,

Daisuke

Hi Biser-san,

Thank you for your reply.

Does the color output format in Figure 13-14 on TRM (SPRUH73L) not show that the Passive (STN) Mode supports 24bit pixel data (RGB888)?

Best regards,

Daisuke

Hi Biser-san,

Thank you for your reply.

Best regards,

Daisuke

Hi Biser-san,

For 16 BPP in passive mode (LCDTFT = 0 and STN565 = 1 in RASTER_CTRL), I understand the frame buffer format and the color output format as follows:

Is my understanding correct?

Best regards,

Daisuke

Hi Biser-san,

Thank you for your reply.

I understand the meaning of Section 13.3.5.4.1 from your explanation.

The color data, e.g. RGB565 for 16BPP is always encoded by the Gray-Scaler/Serializer as 4-bit values that are used to select one of the 16 intensity levels, as shown in Table 13-10. Then the 4-bit values are divided and always output as 3 bits per pixel (RGB), as shown in Figure 13-14.

Best regards,

Daisuke