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This guide is intended for software programmers developing host software to control DMDs used for light control applications such as the DLP5531-Q1 or DLP4621-Q1 chipset through the DLPC230-Q1 or DLPC231-Q1 controllers. It includes communication protocols, command descriptions, and hardware pins that relate to software functionality. Additional use-case information is provided to explain general command usage scenarios and how software settings can be modified to meet necessary product goals.