a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
7.4. VSYNC Interface
ILI9325 supports the VSYNC interface in synchronization with the frame-synchronizing signal VSYNC to
display the moving picture with the i80 system interface. When the VSYNC interface is selected to display a
moving picture, the minimum GRAM update speed is limited and the VSYNC interface is enabled by setting
DM[1:0] = “10” and RM = “0”.
VSYNC
MPU
nCS
RS
nWR
DB[17:0]
Figure10 Data transmission through VSYNC interface)
In the VSYNC mode, the display operation is synchronized with the internal clock and VSYNC input and the
frame rate is determined by the pulse rate of VSYNC signal. All display data are stored in GRAM to minimize
total data transfer required for moving picture display.
VSYNC
Rewriting
screen data
Rewriting
screen data
Write data to RAM
through system
interface
Display operation
synchronized with
internal clocks
Figure11 Moving picture data transmission through VSYNC interface
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
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