SAM9263 Atmel Corporation, SAM9263 Datasheet - Page 966

• Manufacturer Part Number: SAM9263
• Manufacturer: Atmel Corporation

Specifications of SAM9263

• Flash (kbytes): 0 Kbytes
• Pin Count: 324
• Max. Operating Frequency: 240 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 160
• Ext Interrupts: 160
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 1
• Uart: 4
• Can: 1
• Ssc: 2
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: Yes
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 96
• Self Program Memory: NO
• External Bus Interface: 2
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Figure 45-11. Command Queuing
45.3.1.12
966
CPU WRITE
AT91SAM9263
Recommended Procedure for Using the Command Queue
ADDRESS = 0x08
BUF END = 64
LENGTH = 9
TDGC FIFO
SBXR
SBXR
SBYR
TEXR
TEYR
GOR
LWR
CSR
LOR
LPR
In order to optimize the small command FIFO (64 half words) use, and due to the restriction of
the APB access that has to be full word only, all 32-bit registers are split into two registers. This
only affects the clipping command where the start and end coordinates of the line to be clipped
could be outside the range of 2048 pixels and may need 32 bits to define line coordinates. Thus
extra accesses to the FIFO must be made if the clip line coordinate has to be represented in 32
bits versus 16 bits. See the specific example of clipping command that shows the change in
code as described above.
• Load the entire queue (equal to 64) with commands.
• Enable command queue buffer empty interrupt (BUFE) in TDGC_GMR if using interrupts
instead of polling.
READ FIFO
DRAW QUEUE
CONTROL
WRITE TO REG
TDGC REGISTERS
SBXR
SBYR
TEXR
TEYR
GOR
LWR
CSR
LPR
LOR
6249I–ATARM–3-Oct-11
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