SH7721 datasheet(960/1524 Pages) RENESAS

960 / 1524 page

Section 26

LCD Controller (LCDC)

Rev. 3.00 Jan. 18, 2008 Page 898 of 1458

REJ09B0033-0300

Figure 26.2 shows the valid display and the retrace period.

H AddressableVideo

Vsync Time

Top Border

V Addressable

Video

Bottom Border

Front Porch

H Total Time

Back Porch

Hsync Signal

Active Video =Top/Left Border + Addressable Video + Bottom/Right Border

Total H Blank = Hsync Time + Back Porch + Front Porch

Total V Blank = Vsync Time + Back Porch + Front Porch

HTCN = H Total Time

HDCN = H Addressable Video

HSYNP = H Addressable Video + Right Border + Front Porch

HSYNW = Hsync Time

VTLN = V Total Time

CDLN = V Addressable Video

VSYNP = V Addressable Video + Bottom Border + Front porch

VSYNW = Vsync Time

Figure 26.2

Valid Display and the Retrace Period

26.4.2

Limits on the Resolution of Rotated Displays, Burst Length, and Connected

Memory (SDRAM)

This LCDC is capable of displaying a landscape-format image on a LCD module by rotating a

portrait format image for display by 90 degrees. Only the numbers of colors for each resolution are

supported as shown in tables 26.3 and 26.4. The size of the SDRAM (the number of column

address bits) and its burst length are limited to read the SDRAM continuously.

The number of colors for display, SDRAM column addresses, and LCDC burst length are shown

table 26.3 and 26.4.

A monochromatic LCD module is necessary for the display of images in the above

monochromatic formats. A color LCD module is necessary for the display of images in the above

color formats.

SH7721 Datasheet(PDF) 960 Page - Renesas Technology Corp