Renesas R61509V manual Functions Not Available in RGB Interface operation

R61509V Target Spec

Notes to RGB Interface Operation

1. The following functions are not available in RGB interface operation.

Table 64 Functions Not Available in RGB Interface operation

Function	RGB Interface	Internal Display Operation
Partial display	Not available	Available
Scroll function	Not available	Available

2.The VSYNCX, HSYNCX, and DOTCLK signals must be supplied during display period.

3.The reference clock to generate liquid crystal panel controlling signals in RGB interface operation is DOTCLK, not the internal clock generated from the internal oscillator.

4.When switching between the internal operation mode and the external display interface operation mode, follow the sequences below in setting instruction.

5.In RGB interface operation, front porch period continues after the end of frame period until next VSYNCX input is detected.

6.RGB and 80-system bus interfaces cannot be used simultaneously.

7.In RGB interface operation, RAM address AD16-0 is set in the address counter every frame on the falling edge of VSYNCX.

Internal Clock Operation to RGB Interface (1) RGB Interface (1) to Internal Clock Operation

Internal clock operation

AM = 0

RAM address set

Set DM1-0 = 01 and RM = 1 for RGB interface

Display operation in synchronization with internal clocks

*Instruction setting for

the RGB interface operation

is enebled from the next frame period.

RGB interface operation

Set internal clock operation mode* (DM1-0 = 00 and RM = 0)

Wait one frame period or more

Display operation in synchronization with VSYNCX, HSYNCX, and

DOTCLK

*Instruction setting to the internal clock operation is enebled from the next frame period.

Display operation in synchronization with

Set index register to R202h

Wait one frame period or more

Write data to RAM via RGB interface

Internal clock operation internal clocks

Note: Continue RGB interface signals at least for one frame period after setting DM1-0, RM bits to internal clock operation.

Display operation in synchronization with VSYNCX, HSYNCX, and DOTCLK

Operation via RGB interface

Note: Input the RGB interface signals before setting the DM1-0 and RM bits to the RGB interface operation.

Figure 49 RGB and Internal Clock Operation Mode Switching Sequences

Rev. 0.11 April 25, 2008, page 128 of 181