r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 927

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Bit
9, 8
7
6
5, 4
3, 2
1, 0
Bit Name
PnCPSL
PnDC
⎯
PnBM
⎯
PnDDF
0
Initial
Value
0
0
0
All 0
0
R/W
R/W
R/W
R
R/W
R
R/W
Internal
Update
Yes
Yes
⎯
Yes
⎯
Yes
Description
Plane n Color Palette Select
When the PnDDF bit is set to 8 bits/pixel,
specifies the color palette to be used.
00: Selects the color palette 1
01: Selects the color palette 2
10: Selects the color palette 3
11: Selects the color palette 4
Plane n Display Area Change
Controls switching of the frame buffer in manual
display change mode.
0: In manual display change mode, switching of
1: In manual display change mode, switching of
Reserved
This bit is always read as 0. The write value
should always be 0.
Plane n Buffer Mode
When set to manual display change mode or
auto display change mode (blinking mode),
double buffer control is performed using
PnDSA0R and PnDSA1R.
00: Manual display change mode
01: Setting prohibited
10: Auto display change mode (blinking mode)
11: Setting prohibited
Reserved
These bits are always read as 0. The write value
should always be 0.
Plane n Display Data Format
00: 8 bits/pixel
01: 16 bits/pixel
10: ARGB
11: YC (YUV422 is converted to RGB888)
the frame buffer for display is not performed.
the frame buffer for display is performed.
When the PnDC bit is 0, bit setting is possible.
Switching is performed in frame units.
After frame buffer switching (after vertical
blanking detection), this bit is cleared to 0.
Rev.1.00 Jan. 10, 2008 Page 897 of 1658
19. Display Unit (DU)
REJ09B0261-0100