AK8826 Datasheet, PDF (47/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

(3) Case of 1125i (1080i) 750P(720P) data input
Y/Cb/Cr data should be input with 16-bit width at 74.25MHz clock-rate.
x2 Over-sampling filter for Y-data and x4 Over-sampling filter for Cb/Cr data is equipped.
The block diagram is shown as follows,
8-bit
Y
8-bit
Cb/Cr
Synchronization Timing
MUX
Y
EAV
Decoder
Cb/Cr
Y
Cb/Cr
DEMUX
Level
Conversion
Y [9:0]
sin(x)/x
Compensation
CB [9:0]
CR [9:0]
4:2:2
to
4:4:4
Interpolation
LPF-E
x2
Interpolation
x2
Interpolation
LPF-F
74.25MHz
Synchronization Mode
Input Formatter 37.125MHz
74.25MHz
Fig. 44 1080i/720P mode Block Diagram
[AK8826VN]
SYNC Form
Delay
DAC
Delay
DAC
Delay
DAC
148.5MHz
MS0972-E-01
47
2008/12