STDP3150 DisplayPort® to VGA Converter

Kinetic Technologies' STDP3150 is a DisplayPort to VGA signal format converter for interfacing DisplayPort-based PC, notebooks, tablets, and smart-phones with conventional VGA displays. DisplayPort offers a unified, scalable, and cost-effective interface for embedded and external display applications. As desktop and notebook PCs are increasingly transitioning from conventional analog type interfaces to DisplayPort, STDP3150 facilitates the transition by offering seamless connectivity between new DisplayPort PC, notebooks, and the installed base VGA monitors and projectors.

Besides the dongle application, STDP3150 is also a perfect fit for notebook and desktop motherboard designs based on new generation Intel, CPU / AMD GPU architecture. STDP3150 is a highly integrated converter featuring a DisplayPort receiver, video DAC, clock form generator, test pattern generator, and sink detection block. In addition, STDP3150 includes EDID and MCCS passthrough features, forming a fully transparent operation between the PC and display. This device's active power consumption is as low as 400 mW, so it can be powered by the DisplayPort source when used in a dongle application. The device has a built-in sink detection feature that determines the active and standby state. The device enters standby (low power) state whenever the VGA cable is disconnected and returns to normal operation when the cable is connected back.

STDP3150 supports video resolutions from VGA through WUXGA. The input DisplayPort interface consists of two main lanes, AUX channel, and HPD signal that maps directly to a standard DisplayPort connector via two layers PCB. The output interface consists of analog R, G, B video, Hsync, Vsync, and DDC signals. Analog video signal amplitude ranges from 0 mV to 700 mV from a 10-bit video DAC with maximum sampling frequency of 162 MHz. The VGA output signal interface conforms to the VSIS standards with separate Hsync and Vsync control signals. The DDC_SDA and DDC_CLK signals are driven from an I²C master, which controls I²C traffic between the DisplayPort AUX channel and an external secondary device.