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Background Only
AUX Only
MAIN Only
Internal Modules
230
SPRUHI7A – December 2012 – Revised June 2016
Copyright © 2012–2016, Texas Instruments Incorporated
High-Definition Video Processing Subsystem (HDVPSS)
In the previous examples, both Main and Aux are active. However, Main can be the only source (
), Aux can be the only source (
), or both Main and Aux can be disabled and only the
Background is sent out (
). In the last case, either the Main or the Aux inputs must still be
sending data into the VCOMP even though the picture data is not used.
Figure 1-161. Main Layer Only
Figure 1-162. Aux Layer Only
Figure 1-163. No Layer Enabled
To enable/disable Layers, the following register bitfields are used:
Main Layer
VCOMP->reg0.cfg_main_enable
Aux Layer
VCOMP->reg3.cfg_aux_enable
The Main and Aux sources, single or together, can completely cover the Background layer.
Alternate fixed color can be selected for main and aux layers when needed as shown below.
Main layer Fixed data enable/disable VCOMP
→
reg0.cfg_main_fixed_data_send