ZHCSA85F August 2012 – February 2019 DLPC410
A Global Reset (BLK_MD = 11 and BLK_AD = 10XX) is an operation which Resets (MCP) all DMD blocks at the same time. The Global Reset duration is the same as the Single, Dual, and Quad Block Reset (MCP). In addition to requiring a No-Op row cycle to initiate the Global Reset, row cycles (either No-Op row cycles or data loading row cycles) are required to continually be provided to complete the Global Reset operation. If continual provision of row cycles is not provided, the customer interface monitoring RST_ACTIVE may never see RST_ACTIVE transition back low to indicate the Reset is complete. Customers should always provide valid row cycles, either No-Ops or data loading row cycles. To know when the reset operation is complete, customers can either monitor RST_ACTIVE high-to-low transition, or use a counter to know when at least a 4.5 µs period has expired from the start of the Global Reset. From that point on, the customer also needs to count the mirror settling time of the DMD to expire prior to loading the next data into the DMD.
Reset (MCP) operations to a specific block or consecutive blocks of the DMD are also referred to "Block Resets" or just "Reset" operations. This is because they are physically "resetting" the micromirrors of the block to their next physical positions based on the underlying data.
(DLP9500 and DLP9500UV DMDs Only) To clear one Mirror Clocking Pulse (Reset) Group in the DMD Block, one Clear command followed by two consecutive No Operation commands (No-Ops) are required. Therefore, 15 total Block Clear commands and 30 total No-Ops commands are required to clear the entire DMD array.