VIPER Technical Manual

Detailed hardware description

 

 

FPIF-LVDS-TX connectorsJP1 – TX strobe selection

This link selects the edge of the TX strobe.

If the jumper is fitted (default) then the TX Strobe shall be on the rising edge. If no jumper is fitted then the TX Strobe shall be on the falling edge.

JP2 – Cable power selection

This link provides 3.3V or 5V (default) to the J2 and J3 connectors respectively. Please refer to the pin descriptions of these connectors below for details.

If the FPIF-LVDS-TX is to be connected directly to an LVDS display then power for the display logic may be supplied to the display. If using long LVDS cables, it is advisable to use the CABLE_POWER signal as a control signal to enable power provided externally.

Backlight power for the display should always be provided externally.

If the FPIF-LVDS-TX is used in conjunction with the FPIF-LVDS-RX to extend the VIPER video up to 10 meters, fit the jumper to either position. Ensure that a jumper is fitted as the CABLE_POWER signal of the FPIF-LVDS-TX signals to the FPIF-LVDS-RX when to enable power to the display.

JP3 – MSL selection

If the FPIF-LVDS-TX is to be connected directly to an LVDS display via the Hirose connector J2, then this link selects the display’s LVDS receiver input map. Fitting or not fitting a jumper to JP3 sets J2 pin 20 (MSL) to 3.3V or GND (default) respectively.

If the MDR connector J3 is used then jumper setting of JP3 has no effect.

Please consult the manual of your LVDS display for which setting to use for a National Semiconductor DS90C383 LVDS transceiver.

© 2007 Eurotech Ltd Issue E

Rising edge TX Strobe (default)

Falling edge TX Strobe

J2

J3 (default)

Open - GND (default)

Closed - 3.3V

44