HD66787 Datasheet, PDF (96/159 Pages) Renesas Technology Corp – 528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat

HD66787
Preliminary
Notes to the external display interface
1. While an external display interface is selected, the following functions are not available.
Function
Partial display
Scroll function
Graphics operation function
External Display Interface
Not available
Not available
Not available
Internal Display Operation
Available
Available
Available
2. The VSYNC, HSYNC, and DOTCLK signals must be supplied consecutively during display
operation through the RGB-I/F.
3. When setting NO1-0, SDT1-0, and EQ1-0 bits in the RGB-I/F mode, the reference clock is the
DOTCLK, not the internal operation clock.
4. In the 6-bit RGB-I/F mode, RGB (pixels) data are transmitted by three clocks. The data transmission,
therefore, should be made by RGB.
5. In the 6-bit RGB-I/F mode, the interface signals, VSYNC, HSYNC, DOTCL, ENABLE, VLD, and
PD17-0, should be set in RGB (pixels) in convenience for transmitting RGB pixels.
6. The transitions between the internal operation mode and external display interface should be made
according to the mode switching sequence below.
7. In the RGB-I/F mode, the front porch period continues after displaying one frame data until the next
VSYNC signal input.
8. In the RGB-I/F mode, the data must be written in the high-speed write mode (HWM = 1).
9. In the RGB-I/F mode, the address is set every frame on the falling edge of VSYNC.
Rev.0.22, May.23.2003, page 96 of 159