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5 . 5 . 7
Color detection registers H and L (CDERH, CDERL)
15
CDG
*
R/W
14
CDG
*
R/W
13
CDG
*
R/W
12
CDG
*
R/W
11
CDG
*
R/W
8
—
—
—
10
CDG
*
R/W
9
—
—
—
Bit:
CDERL:
Initial value:
Read/Write:
7
CDB
*
R/W
6
CDB
*
R/W
5
CDB
*
R/W
4
CDB
*
R/W
3
CDB
*
R/W
0
—
—
—
2
CDB
*
R/W
1
—
—
—
15
—
—
—
14
—
—
—
13
—
—
—
12
—
—
—
11
—
—
—
8
—
—
—
10
—
—
—
9
—
—
—
Bit:
CDERH:
Initial value:
Read/Write:
7
CDR
*
R/W
6
CDR
*
R/W
5
CDR
*
R/W
4
CDR
*
R/W
3
CDR
*
R/W
0
—
—
—
2
CDR
*
R/W
1
—
—
—
Note: * Value is retained.
Color detection registers H and L (CDERH, CDERL) are 16-bit readable/writable registers. When
the display data output from pins DD17 to DD0 matches the values set in these registers, 1 is
output from the CDE pin. Color detection is performed by means of the CDE pin during the
blanking period. Pins DD0 to DD17 all go low during this period. Therefore, if both CDERH and
CDERL are cleared to 0, CDE pin output will go high during the blanking period. Similarly, if
either CDERH or CDERL is not 0, the CDE pin will go low during the blanking period.
Bits 15 to 8, 1, and 0 of CDERH, and bits 9, 8, 1, and 0 of CDERL are reserved. Only 0 should
be written to these bits.
CDERH/L bits CDR, CDG, and CDB retain their values in a reset.
Summary of Contents for HD64411 Q2
Page 17: ...10 ...
Page 31: ...24 ...
Page 108: ...101 Example 0 0 Work coordinates Rendering coordinates XC YC ...
Page 110: ...103 Example Old XC YC Old XC XC old YC YC 0 0 Work coordinates Rendering coordinates XC YC ...
Page 116: ...109 Example 0 0 Work coordinates Rendering coordinates XMIN YMIN XMAX YMAX ...
Page 118: ...111 Example 0 0 Work coordinates Rendering coordinates XMAX YMAX ...
Page 120: ...113 Example 0 0 Work coordinates XMIN YMIN XMAX YMAX ...
Page 129: ...122 ...
Page 167: ...160 ...
Page 179: ...172 ...