Functional Description
254 Datasheet
5.26 PCH Display Interfaces
The PCH integrates one Analog, LVDS (mobile only) and three Digital Ports B, C, and D.
Each Digital Port can transmit data according to one or more protocols. Digital Port B,
C, and D can be configured to drive natively HDMI, DisplayPort, or DVI. Digital Port B
also supports Serial Digital Video Out (SDVO) that converts one protocol to another.
Digital Port D can be configured to drive natively Embedded DisplayPort (eDP). Each
display port has control signals that may be used to control, configure and/or
determine the capabilities of an external device.
The PCH’s Analog Port uses an integrated 340.4 MHz RAMDAC that can directly drive a
standard progressive scan analog monitor up to a resolution of 2048x1536 pixels with
32-bit color at 75 Hz.
The PCH SDVO port (configured through Digital Port B) is capable of driving a 200 MP/s
(Megapixels/second) rate.
Each Digital Port is capable of driving a digital display up to 2560x1600 at 60 Hz using
DisplayPort and 1920x1200 at 60 Hz using HDMI, DVI (with reduced blanking).
5.26.1 Analog Display Interface Characteristics
The Analog Port provides a RGB signal output along with a HSYNC and VSYNC signal.
There is an associated Display Data Channel (DDC) signal pair that is implemented
using GPIO pins dedicated to the Analog Port. The intended target device is for a moni-
tor with a VGA connector. Display devices such as LCD panels with analog inputs may
work satisfactory but no functionality added to the signals to enhance that capability.
Figure 5-12. Analog Port Characteristics
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