Filter
Top Products
Section 27 Video Display Controller 3
R01UH0134EJ0400 Rev. 4.00 Page 1559 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
(5) Relationship between Input Video Vsync and Reference Vsync
The reference Vsync is a signal that is used as the reference when specifying the timing of the
Vsync signals for video, graphics images, and output to the panel (see figure 27.7). The timing of
the reference Vsync signal can be specified through register settings with respect to the reference
point; that is, the left end of the first line of the TOP field.
DV_CLK
BT.656
DV_HSYNC
VIDEO_VSYNC_START1_TOP
Synchronized
with
LCD_CLK
VIDEO_VSYNC_START1_BTM
FF 00 00 EAV
Reference
point
(Internal signal)
Field
DV_VSYNC
TOP
BOTTOM
Vsync signal sent to
panel control block
(synchronous with DV_CLK)
Reference Vsync signal
(synchronous with LCD_CLK)
Figure 27.7 Timing of Reference Vsync Generation