mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 999

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

18.3 LCD CONTROLLER OPERATION
The LCD controller uses the system interface unit to communicate with the core and external
system. It has its own DMA functionality to fetch display memory into the FIFOs for pixel
generation. The LCDCLK signal is derived from the SPLL output (VCOOUT) and is fed to
the timing generator for vertical, horizontal, and frame timing. The register set is used to
program the timing parameters for an LCD panel. Figure 18-7 illustrates the various
modules of the LCD controller.
VCOOUT CLOCK
EOF IRQ
REGISTERS
DMA CONTROLLER
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 18-7. LCD Functional Module
DFLCD
MPC823 REFERENCE MANUAL
FIFOA
FIFOB
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TIMING GENERATOR
DFALCD
LCDCLK
HORIZONTAL CONTROL
VERTICAL CONTROL
FRAME CONTROL
GENERATION
PIXEL
LCD Controller
SHIFT/CLK
LCD_AC/LOE
FRAME/VSYNC
LOAD/HSYNC
LD[0:8]
LCD_A
LCD_B
LCD_C
18-7