Filter
Top Products
Section 27 Video Display Controller 3
Page 1594 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Table 27.11 Functions of Display Enable Bits
DEN VEN Operation Output Control
0 0 Does not read image data
from memory or process
lower-layer display.
Outputs the color specified in
GROPBASERGB over the
entire screen (negates the
enable signal output).
0 1 Does not read image data
from memory but
processes lower-layer
display.
Outputs only the lower layer
(outputs the lower layer
enable signal).
Displays only the lower
layer.
1 0 Reads image data from
memory but does not
process lower-layer
display.
Outputs only the current
layer (outputs the current
layer enable signal).
Displays only the current
layer.
1 1 Reads image data from
memory and processes
lower-layer display.
Performs the specified
processing for the current
layer and lower layer and
displays them (logically ORs
the current layer and lower
layer enable signals and
outputs the result).
Displays the current and
lower layers.
Note: When the control area (specified by GROPEWH and GROPEDPHV) is larger than the
graphics image area (specified by GROPSWH and GROPDPHV), only the lower layer is
displayed.
These bits should be set for each layer. When VEN = 0 in the upper layer, the graphics in
the lower layer are not output.