CAT6611 データシートの表示（PDF） - Unspecified
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CAT6611 Datasheet PDF : 29 Pages
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CAT6611
YCbCr 4:2:2 with Separate Syncs
YCbCr 4:2:2 format does not have one complete pixel for every clock period. Luminace channel (Y) is
given for every pixel, while the two chroma channels are given alternatively on every other clock
period. The average bit amount of Y is twice that of Cb or Cr. Depending on the bus width, each
component could take on different lengths. The DE period should contain an even number of clock
periods. Figure 6 gives a timing example of 16-bit YCbCr 4:2:2. The 20-bit and 24-bit versions are
similar.
Pin Name
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
HSYNC
VSYNC
DE
YCbCr 4:2:2 16-bit
Pixel#2N Pixel#2N+1
grounded grounded
grounded grounded
grounded grounded
grounded grounded
grounded grounded
grounded grounded
grounded grounded
grounded grounded
Y0
Y0
Y1
Y1
Y2
Y2
Y3
Y3
Y4
Y4
Y5
Y5
Y6
Y6
Y7
Y7
Cb0
Cr0
Cb1
Cr1
Cb2
Cr2
Cb3
Cr3
Cb4
Cr4
Cb5
Cr5
Cb6
Cr6
Cb7
Cr7
HSYNC
HSYNC
VSYNC
VSYNC
DE
DE
YCbCr 4:2:2 20-bit
Pixel#2N Pixel#2N+1
grounded grounded
grounded grounded
Y0
Y0
Y1
Y1
grounded grounded
grounded grounded
Cb0
Cr0
Cb1
Cr1
Y2
Y2
Y3
Y3
Y4
Y4
Y5
Y5
Y6
Y6
Y7
Y7
Y8
Y8
Y9
Y9
Cb2
Cr2
Cb3
Cr3
Cb4
Cr4
Cb5
Cr5
Cb6
Cr6
Cb7
Cr7
Cb8
Cb8
Cb9
Cb9
HSYNC
HSYNC
VSYNC
VSYNC
DE
DE
YCbCr 4:2:2 24-bit
Pixel#2N Pixel#2N+1
Y0
Y0
Y1
Y1
Y2
Y2
Y3
Y3
Cb0
Cr0
Cb1
Cr1
Cb2
Cr2
Cb3
Cr3
Y4
Y4
Y5
Y5
Y6
Y6
Y7
Y7
Y8
Y8
Y9
Y9
Y10
Y10
Y11
Y11
Cb4
Cr4
Cb5
Cr5
Cb6
Cr6
Cb7
Cr7
Cb8
Cr8
Cb9
Cr9
Cb10
Cr10
Cb11
Cr11
HSYNC
HSYNC
VSYNC
VSYNC
DE
DE
Table 5. Mappings of YCbCr 4:2:2 with separate syncs
blank Pixel0 Pixel1 Pixel2 Pixel3 Pixel4 Pixel5 Pixel6 ...
D[23:16]
D[15:8]
D[7:0]
val
val
Cbpix0
[7:0]
Ypix0
[7:0]
Crpix0
[7:0]
Ypix1
[7:0]
Cbpix2
[7:0]
Ypix2
[7:0]
Crpix2
[7:0]
Ypix3
[7:0]
Cbpix4
[7:0]
Ypix4
[7:0]
Crpix4
[7:0]
Ypix5
[7:0]
Cbpix6
[7:0]
Ypix6
[7:0]
....
....
PCLK
DE
blank
val val
val val
val
val
H/VSYNC
Figure 6. 16-bit YCbCr 4:2:2 with separate syncs
The CAT logo is a registered trademark of Chip Advanced Technology
2007 Chip Advanced Technology Inc. – All Right Reserved.
June-2007 Rev:1.0a 19/29
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