at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 930

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

Figure 44-13. Line and Polygon Clipping
44.3.1.5
930
(0,13)
(0,0)
Y
(1,8)
AT91SAM9263 Preliminary
C4(2,10)
C1(2,2)
Draw Command Queuing
(2,1)
PIXEL DRAWN
PIXEL NOT DRAWN
CLIP RECTANGLE
Multiple block transfer, line draw or fill commands can be issued to the 2DGC by writing the com-
mands to a 64 x 16-bit wide FIFO. All drawing specific registers can be written via writes to the
FIFO by writing the address, length and the register value to the command queue.
Length is based on the number of consecutive register writes. All accesses to the command
queue FIFO are by reading/writing to the 16-bit wide 2DGC_CQR. The pointer to the command
queue is automatically incremented by the controller. FIFO command size is limited to 64 half
words.
(4,5)
(5,1)
(5,4)
(8,11)
DISPLAY
(8,1)
(8,5)
X
(11,2)
(12,1)
(12,3)
(13,2)
C3(15,10)
C2(15,2)
6249D–ATARM–20-Dec-07
(16,3)
(16,8)
(17,13)
(17,0)