1/31/2023 0 Comments I2c vs uart performance![]() ![]() The DDC/CI specification references the MCCS spec. Some time ago the Monitor Control Command Set (MCCS) specification took on the role of defining the virtual control panel (VCP) feature codes processed by DDC/CI. The bit-banging to the video device drivers, e.g. SMBUS is another protocol based on I2C.įor details on I2C, see the References section.ĭdcutil reads from and writes to the userspace /dev-i2c devices which present a file system like abstraction of an I2C bus. For example, only certain byte sequences are legal. By analogy,ĭDC is as a subclass of superclass I2C, that is DDC obeys the DDC/CI is layered on top of that protocol, describing particular sequences of bytes that are communicated between a master device (the host computer) and a slave device (a monitor) at address x37 on an I2C bus. ![]() I2C is a low level, slow speed specification of a 2 wire protocol for sending and receiving bytes. This section attempts to clarify the relationship. Making matters worse, the terms are often used interchangably. The relationship between DDC and I2C is a source of confusion. ![]() Reverse Engineering Proprietary DDC Extensions.Configuration and Installation Diagnostics. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |