4 color detection – Renesas SH7781 User Manual
Page 995
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 965 of 1658
REJ09B0261-0100
19.5.4
Color Detection
When output display data matches a color set in CDER, high level is output from the CDE pin.
The CDEM bit in DSMR can be used to fix the level outside display intervals. Also, the CDEL bit
in DSMR can be used to select the polarity of the output level.
Table 19.15 Output Level of the CDE Pin
The CDE pin in display intervals
The CDE pin outside display
intervals
Result of comparison of output
display data and color detection
register
Value of the color detection
register*
CDEL
CDEM
Same
Different
0
Other than 0
0
00
High level
Low level
High level
Low level
0
01
High level
Low level
High level
Low level
0
10
High level
Low level
Low level
Low level
0
11
High level
Low level
High level
High level
1
00
Low level
High level
Low level
High level
1
01
Low level
High level
Low level
High level
1
10
Low level
High level
High level
High level
1
11
Low level
High level
Low level
Low level
Note: * Output display data is 0 outside display intervals.