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R61509V Target Spec
Rev. 0.11 April 25, 2008, page 99 of 181
System Interface
The following are the kinds of system interfaces available with the R61509V. The interface operation is
selected by setting the IM2/1/0 pins. The system interface is used for instruction setting and RAM access.
Table 57 IM Bit Settings and System Interface
IM2 IM1 IM0 Interfacing Mode with Host Processor DB Pins Colors
0 0 0 80-system 18-bit interface DB17-0 262,144
0 0 1 80-system 9-bit interface DB17-9 262,144
0 1 0 80-system 16-bit interface DB17-10, DB8-1 262,144
*see Note1
0 1 1 80-system 8-bit interface DB17-10 262,144
*see Note2
1 0 * Clock synchronous serial interface - 65,536
1 1 0 Setting inhibited - -
1 1 1 Setting inhibited - -
Notes: 1. 65,536 colors in 16-bit single transfer mode.
2. 262,144 colors is 8-bit 3-transfer mode. 65,536 colors in 8-bit 2-transfer mode.