project by : sokolik dmitry instructor : boaz mizrahi digital lab
Post on 21-Dec-2015
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TRANSCRIPT
Video sampling
Compress unit
output interface
PCI Bus
Au
x. B
us
9080
Local Bus
24.576 MHz
Control unit33.333 MHz
I2C
8 bit Video BusComposite
PAL
SAA7111SAA7111LPFLPF
24.576 MHz
•LPF - filtering high frequencies to prevent aliasing;
•SAA7111 - Composite Video Decoder
1) Control -- I2C protocol;
2) 24.576 MHz clock.
3) 27 MHz reading rate
4) CCIR-656
PCF8584PCF8584
• ADV601 -- wavelet video encoder ( also decoder ) ;• DRAM -- NEC uPD424210ALE-60 (256Kx16 bit );• ADSP-2181 -- DSP providing algorithm calculations;• Compressed data -- 32 bit bus ( 8 , 16 bit optional ); • Control -- host interface;
ADV601
Data in Compressed Data
ADSP2181DRAM
Control
Local bus arbiter
LHOLD
LHOLDA
Data processing
Local bus
data
PCF8584
interface
I2C
SAA7111
ADV
interface
TO ADV