ZHCSA85F August 2012 – February 2019 DLPC410
One of the simplest and most frequently utilized modes, the Global Mode involves loading the entire DMD with new pattern data and then issuing a Global Reset to update all DMD mirrors at the same time. Loading the entire DMD with data involves loading every row of every block. The time it takes to load the DMD is the block load time × the number of blocks for that specific DMD. Table 17 shows the fastest DMD load times for DLPC410 supported DMDs.
|DMD||DMD LOAD TIME (400 MHz Clock)|
|DLP7000 / DLP7000UV||30.7 µsec|
|DLP9500 / DLP9500UV||43.2 µsec|
The Global Mode case is shown in Figure 20. Following the loading of all rows in the device, a Row No-Op row cycle with a Global Reset Request must be issued to initiate the Reset Pulse and No-Ops should continue until ready to load the DMD again. If the global Reset Pulse is asserted prior to loading all rows of the device, rows which were not updated will show old data. Global mode is similar to Single Block Mode in that the mirror settling time must be taken into account prior to reloading the DMD data after a Reset Request is provided. This additional delay makes the Global Mode of operation inherently slower. However, if speed is not as important in a customer application, Global mode is great for its simplicity of DMD loading and Resetting.