at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 919

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

44. 2D Graphics Controller (2DGC)
44.1
6249D–ATARM–20-Dec-07
Description
The 2D Graphics Controller (2DGC) features a hardware accelerator which highly simplifies
drawing tasks and graphic management operations. The hardware accelerator makes it easy to
draw lines and complex polygons and to perform block transfers within the frame buffer.
The 2DGC also features a draw command queue that automatically executes a more complex
drawing function that is composed of several register accesses.
The 2DGC supports access to both external video RAM mapped to any EBI chip selects and
internal RAM (frame buffer). The external video RAM can have an 8-bit, 16-bit or 32-bit data bus.
The 2DGC supports 1 bit, 2 bits, 4 bits, 8 bits, 16 bits and 24 bits per pixel. The maximum virtual
memory page can be 2048 x 2048 pixels. The data written into the video RAM by draw functions
can be in little endian, big endian and WinCE format.
The 2DGC is connected to the AHB (Advanced High Performance Bus) in two ways: first, as a
master for reading and writing pixel data, and second, as a slave for register configuration.
AT91SAM9263 Preliminary
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