SH7721 datasheet(932/1524 Pages) RENESAS

932 / 1524 page

Section 26

LCD Controller (LCDC)

Rev. 3.00 Jan. 18, 2008 Page 870 of 1458

REJ09B0033-0300

Bit

Bit Name

Initial Value

R/W

Description

MIFTYP5

MIFTYP4

MIFTYP3

MIFTYP2

MIFTYP1

MIFTYP0

R/W

Module Interface Type Select

Set the LCD panel type and data bus width to be

output to the LCD panel. There are three LCD panel

types: STN, DSTN, and TFT. There are four data bus

widths for output to the LCD panel: 4, 8, 12, and 16

bits. When the required data bus width for a TFT

panel is 16 bits or more, connect the LCDC and LCD

panel according to the data bus size of the LCD

panel. Unlike in a TFT panel, in an STN or DSTN

panel, the data bus width setting does not have a 1:1

correspondence with the number of display colors

and display resolution, e.g., an 8-bit data bus can be

used for 16 bpp, and a 12-bit data bus can be used

for 4 bpp. This is because the number of display

colors in an STN or DSTN panel is determined by

how data is placed on the bus, and not by the

number of bits. For data specifications for an STN or

DSTN panel, see the specifications of the LCD panel

used. The output data bus width should be set

according to the mechanical interface specifications

of the LCD panel.

If an STN or DSTN panel is selected, display control

is performed using a 24-bit space-modulation FRC

(Frame Rate Controller) consisting of the 8-bit R, G,

and B included in the LCDC, regardless of the color

and gradation settings. Accordingly, the color and

gradation specified by DSPCOLOR is selected from

16 million colors in an STN or DSTN panel. If a

palette is used, the color specified in the palette is

displayed.

000000: STN monochrome 4-bit data bus module

000001: STN monochrome 8-bit data bus module

001000: STN color 4-bit data bus module

001001: STN color 8-bit data bus module

001010: STN color 12-bit data bus module

001011: STN color 16-bit data bus module

010001: DSTN monochrome 8-bit data bus module

010011: DSTN monochrome 16-bit data bus module

011001: DSTN color 8-bit data bus module

011010: DSTN color 12-bit data bus module

011011: DSTN color 16-bit data bus module

101011: TFT color 16-bit data bus module

Settings other than above: Setting prohibited

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