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Functional Description
D15343-003 145
6.5.5 Analog Display Port Characteristics
The Analog display port provides an RGB signal output along with an HSYNC and VSYNC
signal. There is an associated DDC signal pair that is implemented using GPIO pins dedicated to
the analog port. The intended target device is for a CRT based monitor with a VGA connector.
6.5.5.1 Integrated RAMDAC
The display function contains a 350-MHz, integrated, 24-bit, RAM-based Digital-to-Analog
Converter (RAMDAC) that transforms up to 2048X1536 digital pixels at a maximum refresh rate
of 75-Hz. Three, 8-bit DACs provide the R, G, and B signals to the monitor.
6.5.5.2 DDC (Display Data Channel)
DDC is defined by VESA. It allows communication between the host system and display. Both
configuration and control information can be exchanged allowing plug-and-play systems to be
realized. Support for DDC 1 and 2 is implemented.