SAM9G15 Atmel Corporation, SAM9G15 Datasheet - Page 1018

• Manufacturer Part Number: SAM9G15
• Manufacturer: Atmel Corporation

Specifications of SAM9G15

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 105
• Ext Interrupts: 105
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 3
• Uart: 6
• Lin: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

44.6.6
1018
1018
SAM9G15
SAM9G15
Chrominance Upsampling Unit
Both 4:2:2 and 4:2:0 input formats are supported by the LCD module. In 4:2:2, the two chromi-
nance components are sampled at half the sample rate of the luminance. The horizontal
chrominance resolution is halved. When this input format is selected, the chrominance upsam-
pling unit uses two chrominances to interpolate the missing component.
In 4:2:0, Cr and Cb components are subsampled at a factor of two vertically and horizontally.
When this input mode is selected, the chrominance upsampling unit uses two and four chroma
components to generate the missing horizontal and vertical components.
Figure 44-2. 4:2:2 Upsampling Algorithm
Y sample
Cr Cb calculated at encoding time
Cr Cb interpolated from 2 Chroma Component
Cr Cb interpolated from 4 Chroma Component
C[0,y/2]
C[0,y]
Vertical and Horizontal upsampling 4:2:0 to 4:4:4 conversion
C[0,0]
C[x/2,0]
C[x/2,y]
C[x/2,y/2]
C[x,0]
C[x,y/2]
C[x,y]
11052C–ATARM–21-Nov-11
11052C–ATARM–21-Nov-11