Specifications

Little Board™/486e Technical Manual
2–36
Table 2–30. Flat Panel Video Connector (J3)
Pin Signal
Name
Description
2, 34, 37 +5V
+5 Volt supply from the Little Board/486e CPU
3 +12V +12 Volt supply from J10
5 ShfClk Shift Clock. Pixel clock for flat panel data. Sometimes called
Video Clock.
7 M M signal for panel AC drive control. Sometimes called ACDCLK
or AC Drive. May also be configured to be -BLANK or as Display
Enable (DE) for TFT panels.
9 LP Latch Pulse. Sometimes called Load Clock, Line Load, or Input
Data Latch, the flat panel equivalent of HSYNC.
10 FLM First Line Marker. Also called Frame Sync or Scan Start-up. Flat
panel equivalent to VSYNC.
12 – 31 VD0 – VD19 Panel video data 0 through 19 (in order). For 8-, 9-, 12-, or 16-bit
flat panels.
36 ENABKL Enable backlight. Power control for panel backlight. Active High,
same as ENAVEE.
38 ENAVEE Enable Vee. Power sequencing control for panel bias voltage.
Active high.
39 ENAVDD Enable Vdd. Power sequencing control for panel driver
electronics Vdd. Active high.
41 VD20 Video data 20
42 VD21 Video data 21
43 VD22 Video data 22
44 VDDSAFE Swiched power supply to panel
45 VD23 Video data 23
46 VEE Switched Vee supply to panel from LCD Bias Supply
47 EXTCONT External contrast adjustment to LCD Bias Supply
50 +12VSAVE Switched +12V supply to panel
1, 4, 6, 8,
40, 48, 49
Ground Ground
11, 32, 33,
35
N/C No connection