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R61509V Target Spec
Rev. 0.11 April 25, 2008, page 127 of 181
18-bit RGB Interface
The 18-bit RGB interface is selected by setting RIM = 0. The display operation is synchronized with
VSYNCX, HSYNCX, and DOTCLK signals. The display data is transferred to the internal RAM in
synchronization with the display operation via 18-bit ports (DB17-0) while data enable signal (ENABLE)
allows RAM access via RGB interface.
Instruction bits can be transferred only via system interface.
HOST
PROCESSOR
R61509V
18
DOTCLK
ENABLE
DB17-0
DB
17
DB
16
DB
15
DB
14
DB
13
DB
12
DB
11
DB
10
DB
9
DB
8
DB
7
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
RIM = 0
Data format for the 18-bit interface (RIM = 0)
Input
GRAM write
data
1 pixel Note: Normal display in 262,144 colors
R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0
VSYNCX
HSYNCX
Figure 48 Example of 18-Bit RGB Interface and Data Format