SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 757

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

41.3.5
41.3.5.1
6254C–ATARM–22-Jan-10
Codec Path
Color Space Conversion
Figure 41-6. Three Frame Buffers Application and Memory Mapping
Depending on user selection, this module can be bypassed so that input YCrCb stream is
directly connected to the format converter module. If the RGB input stream is selected, this mod-
ule converts RGB to YCrCb color space with the formulas given below:
An example of coefficients are given below:
frame n-1
LCD
AT91SAM9XE128/256/512 Preliminary
⎧
⎪
⎨
⎪
⎩
Y
C
C
Codec Request
frame n
r
b
=
=
=
C
C
0,257
Y
0,439
–
b
r
0,148
=
⋅
⋅
–
C
C
R
⋅
C
frame n+1
R
0
3
+
6
R
–
0,504
–
–
–
C
0,368
C
C
0,291
1
4
7
–
C
C
C
⋅
⋅
2
8
⋅
5
G
G
frame n+2
G
×
+
–
Codec Done
+
0,098
0,071
G
R
B
0,439
+
⋅
Cb
⋅
Cr
Y
⋅
B
B
off
off
B
off
+
frame n+3
+
+
16
128
128
Memory Space
Frame Buffer 3
Frame Buffer 0
Frame Buffer 1
ISI config Space
4:2:2 Image
Full ROI
frame n+4
757