There are two key differences between internal and external pattern mode:

• Internal pattern mode only supports 1D patterns i.e the pattern data is same across the entire row or column of the DMD (Figure 7-12 and Figure 7-13).
• Internal pattern mode enables user to design a simple system by eliminating need of an external processor to generate and send patterns every frame. In internal pattern mode one row or one column patterns are pre-loaded in the flash memory and a command is send to DLPC3479 controller to display the patterns. Implementation details on how to create patterns, save patterns in Flash memory and load patterns from flash memory into the internal memory of the DLPC3479 controller are described in the SW Programmers Guide.

Figure 7-12 Column Replication

Figure 7-13 Row Replication

Internal pattern mode further provides two configurations to trigger the display of patterns, free running mode, (shown in Figure 7-14) and trigger in mode (shown in Figure 7-15).