Ampro Corporation P5X manual Flat Panel/CRT Video Controller, Connecting a Flat Panel J3

Little Board/P5x Technical Manual

Flat Panel/CRT Video Controller

The Little Board/P5x provides an integrated high-performance super-VGA video controller. The video controller supports both CRT and flat panel displays. The standard video controller supports only 3.3V video panels. (You can order an adapter to convert the 3.3V signals to 5V for 5V panels.)

There are five connectors associated with the video display. These connectors are summarized in Table 2– 29. Complete hardware details about each connector and the features they support are provided in sections that follow.

Table 2– 29. Video Connector Summary

Name	Connector	Pins/Type	Description
	J3	50-pin Shrouded	Provides connections for a broad array of
			standard flat panel displays. Intended for a
		.100 Header
Flat Panel			standard 50-wire ribbon cable.
	J25	16-pin Shrouded	Provides additional connections for flat-panel
		.100 Header	video data.
LCD Bias			Ampro provides a small add-on board that can
		12-pin .100	supply the Vee voltage for the most common
Supply	J4		LCD flat panel displays. The board mounts to
		Header
Option			this connector. For details about the Vee
			Supply Option, refer to its section, below.
			Provides connections for a CRT display. To
CRT	J5	10-pin Shrouded	connect to a standard CRT cable, use a short
		.100 Header	“transition cable” to a DB-15 connector. The
			pinout for a transition cable is provided below.
ZV Port	J6	26-pin 2mm	Provides connections for external video
		Header	overlay signals.

Connecting a Flat Panel (J3)

Signals for a wide range of flat-panel displays, both color and gray-scale, appear on connectors J3 and J25. Although flat panels of a similar type use similar sets of signals from the video controller, they do not share a standardized interface connector pin configuration. Note, also, that the names of panel control signals vary from manufacturer to manufacturer. Read the description of each signal carefully to determine how each signal is to be used for the display you choose. Refer to the panel manufacturer’s technical literature to determine how to wire a cable for the panel you choose for your application.

In many applications, the power management functions control the LCD display, for example, in portable equipment. Furthermore, power and signals must be sequenced in time when the system is energized to prevent damage to the display. The Little Board/P5x video controller provides power and signal conditioning to meet these requirements.

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