SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The DISPC provides the required control signals to interface directly to an external parallel panel for the MIPI DPI protocol.
Figure 13-23 shows the LCD support parallel interface.
Parallel interface is available through the LCD1, LCD2, LCD3, and TV outputs of the DISPC.
The LCD data and control signals are multiplexed with the TV output data, and control signals are provided by the HDMI module.
The selection can be done at the top level of the display subsystem. For further details and signal mapping, see Section 13.1.1, Display Subsystem Environment.
Figure 13-23 DISPC LCD Support Parallel InterfaceThe path from a module pin to device pad (or pads) is defined at the device I/O logic level. The I/O logic maps the module signals to the different pads of the device and is programmable in the control module registers and dedicated IP registers. For more information, see Pad Configuration Registers, in Control Module.
Table 13-54 describes the interface signals to/from the LCD panel in bypass mode.
| Signal Name(2) | Type(1) | Description |
|---|---|---|
| voutX_d[23:0] | O | Pixel data |
| voutX_clk | O | Pixel clock |
| voutX_vsync | O | Vertical synchronization. The LCD frame clock (vsync) toggles after all the lines in a frame are transmitted to the LCD panel and a programmable number of line clock cycles has elapsed at the beginning and end of each frame. |
| voutX_hsync | O | Horizontal synchronization. The LCD line clock (hsync) toggles after all pixels in a line are transmitted to the LCD panel and a programmable number of pixel clock wait-states has elapsed at the beginning and end of each line. |
| voutX_de | O | In active matrix technology, the DE signal acts as an output-enable signal to indicate when data must be latched using the pixel clock. |
| voutX_fid | O | The FID signal indicates the field identifier for the LCD output field:
|