Ampro Corporation LITTLE BOARD P5X - Manual (Page 59)

Little Board/P5x Technical Manual
2–41
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)
Pin
Signal
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.