Ampro Corporation P5X manual Signal Pin Name Description, Power Sequencing

Little Board/P5x Technical Manual

Table 2– 31. J3 Mating Connectors

Connector Type	Mating Connector
RIBBON	3M 4325-7600
DISCRETE WIRE	MOLEX HOUSING 55-22-2502
	PIN 16-02-0103

The flat-panel video controller supports LCD panels that require up to 36 data bits. J3 supplies the lower 24 data bits (FP0 - FP23), and connector J25 has the additional 12 bits. Table 2– 32 lists the signals available on connector J25, and Table 2– 33 shows J25 mating connectors.

Table 2– 32. Flat Panel Extension Video Connector (J25)

	Signal
Pin	Name	Description
3 - 14	FP24 - FP35	Video data 24 - 35
1,2,15,16	Ground

Table 2– 33. J25 Mating Connectors

Connector Type	Mating Connector
RIBBON	3M 3452-7600
	Latching Clip 3505-8016
DISCRETE WIRE	MOLEX Housing 22-55-2162
	Pin 16-02-0103

Power Sequencing

Some LCD flat-panel displays can be damaged when its various voltages and data signals are applied at power up. This can result in damage to the panel or reduction of its operational life. The on-board video controller provides switched power lines that apply power and data signals in the proper sequence, controlled by the video BIOS. The board also provides the control signals, in case you need to provide your own switched power supply lines in your embedded system.

The Little Board/P5x supports automatic sequencing of Vdd (VDDP) and +12V (+12SAFE, for an external backlight power inverter). The Ampro LCD Bias Supply board (described below) supports automatic power sequencing of Vee, controlled by ENAVEE.

If you want to manage your own supplies, you must enable the power using the special enable signals provided on connector J3, ENAVEE, ENAVDD, and ENABKL.

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