Table of Contents
Advertisement
R0P7727TH003TRKE General Information Manual
(5) System Reset Switch (SW4)
This switch resets the T-Engine hardware. All T-Engine devices are reset so long as this switch is
pressed and held down. When this switch is released, T-Engine is turned off. When the power-on
switch is pressed, T-Engine is turned on and started. In addition, if this switch is released while SW5-7
is ON, T-Engine is also turned on.
3.2 LCD Board Switch
3.2.1 Application Switch
The states of the cursor switch (SW1) and push-button switches (SW2 and SW3) are signaled to the SH7727
through the power supply controller. For details, refer to 6. "Power Supply Controller."
3.2.2 LCD configuration switch
Figure 3.3 shows the setting of an 4-bit DIP switch (SW4).
(1) SW4-1: The setting of "Display Mode".
SW4-1:ON The Display Mode is VGA(480X640)
SW4-1:OFF The Display Mode is QVGA(240X320) (Factory setting)
(2) SW4-2: The setting of "Direction of the LCD vertical scanning".
SW4-2:ON The LCD display is vertically scanned from (X,Y) toward (X,1).
SW4-2:OFF The LCD display is vertically scanned from (X,1) toward (X,Y). (Factory setting)
(3)SW4-3: The setting of "Direction of the LCD vertical scanning".
SW4-3:ON The LCD display is vertically scanned from (X,Y) toward (1,Y).
SW4-3:OFF The LCD display is vertically scanned from (1,Y) toward (X,Y). (Factory setting)
③ SW4-4: TBD
When SW4-2 and SW4-3 are "Factory setting", the starting point (0,0) of the LCD display is upper
left. About the other settings, refer to the data sheet of the LCD controller of SHARP.
When you change the setting of LCD configuration switch, turn off the power supply of the T-
Engine board.
Only can use QVGA(240×320) on SH7727 T-Engine board.
SW4-n
[OFF]
SW4-1
SW4-4
Figure 3.3 Setting the 4-bit DIP Switch
CAUTION
18
SW4-n
[ON]
Switches
Advertisement
Table of Contents
