RealView Platform Baseboard for Cortex-A8 User Guide: A.11. DVI display interface

A.11. DVI display interface

The digital CLCD data from the Northbridge is passed to a T.M.D.S. transmitter to provide the DVI digital data and to a triple video DAC to provide the analogue RGB signals. The DDC2B interface is provided by a custom Two-wire Interface (SBCon) implemented in the Southbridge.

The DVI combined connector (J16) is positioned on the rear panel of the enclosure. See Figure 3.3 for the location of the connector.

Note

The mechanical interconnect includes 29 signal contacts, that are divided into two sections. The first section is organized as three rows of eight contacts. The second section contains five signals that are designed specifically for analog video signals. Hoizontal Sync, Vertical Sync, R, G, and B are all required for analog implementations.

A fused (1A anti-surge) +5V supply (pin 14) is provided by the PB-A8.

The combined DVI connector is shown in Figure A.13.

Figure A.13. DVI connector

The DVI connector signals are listed in Table A.9.

Table A.9. DVI connector signals

Pin	Signal	Pin	Signal	Pin	Signal
1	T.M.D.S. Data2-	9	T.M.D.S. Data1-	17	T.M.D.S. Data0-
2	T.M.D.S. Data2+	10	T.M.D.S. Data1+	18	T.M.D.S. Data0+
3	T.M.D.S. Data2/4 Shield	11	T.M.D.S. Data1/3 Shield	19	T.M.D.S. Data0/5 Shield
4	T.M.D.S. Data4-	12	T.M.D.S. Data3-	20	T.M.D.S. Data5-
5	T.M.D.S. Data4+	13	T.M.D.S. Data3+	21	T.M.D.S. Data5+
6	DDC Clock	14	+5V Power	22	T.M.D.S. Clock Shield
7	DDC Data	15	Ground (for +5V)	23	T.M.D.S. Clock+
8	Analog Vertical sync	16	Hot Plug Detect	24	T.M.D.S. Clock-
C1	Analog Red	C2	Analog Green	C3	Analog Blue
C4	Analog Horizontal Sync	C5	Analog Ground (analog R, G, and B return)

Note

The PB-A8 implements a single link, T.M.D.S. Data 3, 4, and 5 connections are not used.

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