LC749870W Datasheet, PDF (42/45 Pages) Sanyo Semicon Device – Silicon gate NTSC/PAL/SECAM Digital Video Decoder

LC749870W
20. U/ V Gain
The saturation (color density) is adjusted by varying the Cb and Cr gain. The Cb gain can be adjusted using
I2DUV_UGAIN, and the Cr gain using I2DUV_VGAIN.
21. 8-bit output format conversion
The 8-bit output format is converted to a format that is compatible with the ITU-R BT.656 format output.
Blue back color can be output in non-signal mode using I2D65_AUTOBBACK. Sepia color can be output using
I2D65_SEPIA.
Clock 27MHz
♦Input
Data Enable
Y
Cr
Cb
♦Output
Data Enable
ITU-R BT.656
Y718
Y719
…
Cr359
…
Cb359
…
Y0
Y1
Cr0
Cb0
Y715 Cb358 Y716 Cr358 Y717 Cb359 Y718 Cr359 Y719
EAV
…
SAV
Fig.18 Timing Chart (ITU-R BT.656)
Y2
Y3
Cr1
Cb1
Cb0 Y0 Cr0 Y1
* The processing is being performed by a 27MHz free-run clock, and so the number of pixels in one line cannot be
guaranteed. The data in the period from SAV to EAV can be guaranteed, so read the data using the SAV standard.
(Data cannot be read using the EAV standard.)
* If equipment without an ITU-R BT.656 interface is connected, connect the HS and VS, or DE and read the data.
Clock 27MHz
♦Input
Data Enable
Y
Cr
Cb
♦Output
Data Enable
YCbCr 4:2:2
HS
Y718
Y719
…
Cr359
…
Cb359
…
Y0
Y1
Cr0
Cb0
Y715 Cb358 Y716 Cr358 Y717 Cb359 Y718 Cr359 Y719
…
tHWBP
Figure 19 Timing Chart (YCbCr 4:2:2)
Y2
Y3
Cr1
Cb1
Cb0 Y0 Cr0 Y1
* tHWBP shown in Figure 19 has the same value for each format. It can be adjusted by registers.
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