ST7628
7.3.8 Tearing Effect Output Line
The Tearing Effect output line supplies to the MPU a Panel synchronization signal. This signal can be enabled or disabled
by the Tearing Effect Line Off & On commands. The signal can be used by the MPU to synchronize Frame Memory Writing
when displaying video images.
Tearing Effect Line Modes(Frame rate=77Hz)
FRAME
Frame1
Frame2
COMꢀscan
internalꢀsignal
1stꢀline
2ndꢀline
3rdꢀline
61thꢀline
70thꢀline
TE
(modeꢀ1)
tVDH
tCYCLE
tHDH
tHDH
TE
tVDH
(modeꢀ2)
tHCYC
9ꢀline
9ꢀline
61ꢀline
70ꢀline
61ꢀline
70ꢀline
Mode 1, the Tearing Effect Output signal consists of V-Sync(tVDH) information. It starts at 61th line signal and ends at the 70th line
signal. There is one high pulse during each frame.
Mode 2, the Tearing Effect Output signal consists of both H-Sync(tHDH) and V-Sync(tVDH) information. TE pin output tHDH pulse
on each COM scan signal. During 61th ~ 70th line signal, it output a high pulse which equals 1 tHDH + 1 tVDH.
Note: During Sleep In Mode, the Tearing Effect Output Pin is active Low.
Ver 1.4
38/213
2008/08
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
