ZHCSA85F August 2012 – February 2019 DLPC410
Quad Block mode is very similar to Dual Block mode but in Quad Block Mode, 4 Blocks are loaded with data and then Reset. In the case of the DLP7000 DMD with a block load time of 1.92 μs, the loading of two blocks would still be less than the 4.5 μs required for the Reset to complete so No-Ops would be required. To avoid inserting No-Ops is this case, loading four blocks (4 × 1.92 = 7.68 μs) is longer than the RST_ACTIVE duration (4.5 μs) so once loaded, the 4 blocks can immediately be issued a Reset Request by settingRST2BLK to “1”, BLK_MD to “11”, and setting the appropriate BLK_AD address in the first row cycle of the next data block load.
Quad Block mode tends to offer customers the fastest full-DMD pattern rates combined with the largest solid state illuminations windows. Pattern rates for Single Block Phased and Dual Block Phased modes can sometimes be as fast as Quad Block rates, but the illumination windows can be smaller or even negative, thereby requiring delays between patterns to widen the illumination windows for solid state illuminators. These added delays will decrease the resulting pattern rates.