SH7721 datasheet(935/1524 Pages) RENESAS

935 / 1524 page

Section 26

LCD Controller (LCDC)

Rev. 3.00 Jan. 18, 2008 Page 873 of 1458

REJ09B0033-0300

26.3.4

LCDC Scan Mode Register (LDSMR)

LDSMR selects whether or not to enable the hardware rotation function that is used to rotate the

LCD panel, and sets the burst length for the VRAM (synchronous DRAM in area 3) used for

display.

Bit

Bit Name Initial Value

R/W

Description

15, 14



All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

ROT

R/W

Rotation Module Select

Selects whether or not to rotate the display by

hardware. Note that the following restrictions are

applied to rotation.

• An STN or TFT panel must be used. A DSTN

panel is not allowed.

• The maximum horizontal (internal scan direction of

the LCD panel) width of the LCD panel is 320.

• Set a binary exponential that exceeds the display

size in LDLAOR. (For example, 256 must be

selected when a 320

× 240 panel is rotated to be

used as a 240

× 320 panel and the horizontal

width of the image is 240 bytes.)

0: Not rotated

1: Rotated 90 degrees rightwards (left side of

image is displayed on the upper side of the LCD

module)

12 to 10



All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

SH7721 Datasheet(PDF) 935 Page - Renesas Technology Corp

SH7721 Datasheet(HTML) 935 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL