Toshiba 386SX - Manual (Page 30)

AR-B1375/AR-B1376 User s Guide
4-2
4.1.2 CRT Connector (DB1)
DB1 is used to connect with a VGA monitor when you are using the on-board VGA controller as display adapter. Pin
assignments for the DB1 connector is as follows:
NOTE: DB1 on the AR-B1375 is not functional. Its function is always used on the AR-B1376 CPU board.
DB1 (CRT Connector)
6
10
15
11 1
2
3
4
5
1 Red
2 Green
3 Blue
13 Horizontial Sync
14 Vertical Sync
4, 9, 11, 12, & 15 Not Used
5 & 10 Ground
6, 7 & 8 AGND
Figure 4-1 DB1: CRT Connector
4.2 LCD FLAT PANEL DISPLAY
This section describes the configuration and installation procedure for a LCD display. Skip this section if you are
using a CRT monitor only.
Using the Flash Memory Writer utility to download the new BIOS file into the ROM chip to configure the BIOS
default setting for different types of LCD panel. And then set your system properly and configure the AR-B1376
VGA module for the right type of LCD panel you are using.
If you are using a different LCD panel other than those listed, choose from the panel description column which type
of LCD panel you are using.
The following shows the block diagram of using AR-B1376 for LCD display.
AR-B1376
CPU Boad
LCD
Panel
Inverter
Board
VBL Control
+12V, +5V
VEE
FL HIGH
Voltage
Figure 4-2 LCD Panel Block Diagram
The block diagram shows that the AR-B1376 still needs components to be used for LCD panel. The inverter board
provides the control for the brightness and the contrast of the LCD panel while the inverter is the one that supplies
the high voltage to drive the LCD panel. Each item will be explained further in the section.