
Liquid Crystal Display Controller (LCDC)
22-30
Freescale Semiconductor
screen-sized window can be vertically or horizontally scrolled (panned) anywhere inside the virtual page
boundaries. The software must control the starting address in the SSA properly so that the scanning logic’s
system memory pointer (SMP) stays within the VPW and VPH limits to prevent the display of strange
artifacts on the screen.
VPH is used by the programmer only for boundary checks. There is no VPH parameter internal to the
LCDC.
VPW is used in calculating the RAM starting address representing the beginning of each displayed line.
SSA sets the address of data for the first line of a frame. For each subsequent line, VPW is added to an
accumulation initialized by the SSA to yield the starting address of that line.
22.4.2
Graphic Window on Screen
Graphic window is supported in LCD color panel screens for viewfinder and graphic hardware cursor
functions. Similar to the screen, the virtual page width, graphic window start address and graphic window
width and height are software programmable. The position of the graphic window on screen is specified
by the graphic window position register.
shows how the graphic window is configured and
placed on the screen.
Figure 22-28. Graphic Window on Screen
The graphic window and background plane can be alpha blended. The alpha value is programmable on a
window basis, which means all the pixels in the graphic window have the same level of transparency.
There are a total of 256 levels of transparency to be configured. In addition, one of the pixel colors can be
chosen for color keying in which the selected pixel color in the graphics window is made totally
transparent. One of the applications can be a graphical hardware cursor.
NOTE
The graphic window and background images must have the same bpp
setting.
Background Image
Screen
Graphic Window Image
Graphic window
Graphic Window Virtual Page Width
Graphic Window Width
Graphic
Graphic Window Start Address
Graphic Window Position
Height
Window
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...