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| 型號(hào)： | ZR36055PQC29.5 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大小： | 228K |
| 代理商： | ZR36055PQC29.5 |
ZR36011
PRELIMINARY
8
MODE = 011
In this mode, YCbCr data is in 4:1:1 format, with one sample
each of Cb and Cr for every four samples of Y. Cb and Cr are
multiplexed on the CR pins, valid for two clock cycles each.The
CB pins are not used. Decimation in forward conversion, and
interpolation in inverse conversion, are performed as illustrated
in Figures 10 and 11.
Data Output:
Y
CR
Y
Y0
Cr0
Cb0
Cb
CR
Y1
Cr1
Cb1
Y2
Cr2
Cb2
Y3
Cr3
Cb3
Y4
Cr4
Cb4
Y5
Cr5
Cb5
Figure 10. Illustration of Decimation Method, MODE = 011
Cb(N-1)+2Cb(N)+Cb(N+1)
Cr(N+1)+2Cr(N+2)+Cr(N+3)
Cb(N+3)+2Cb(N+4)+Cb(N+5)
4
4
4
Y (N)
Y (N+1)
Y (N+2)
Y (N+3)
Y (N+4)
Y (N+5)
Cr
Cb
CHS determines the validity of input data and synchronizes the
multiplexing of Cr and Cb on the CR pins. As shown in Figure 12
for forward conversion, and Figure 13 for inverse conversion, the
second rising edge of CLK following the rising edge of CHS
latches the first valid input data sample and determines the mul-
tiplex order.
Data Input:
Y
Y
Y0
CR
Y1
Y2
Cr2
Y3
Y4
Y5
Figure 11. Illustration of Interpolation Method, MODE = 011
Cr(N-2)+Cr(N+2)
2
Y (N)
Y (N+1)
Y (N+2)
Y (N+3)
Y (N+4)
Y (N+5)
Cb0
Cb4
Cb (N)
Cr (N+2)
Cb (N+4)
Interpolator Output:
Cb (N)
Cr (N+2)
Cb(N)+Cb(N+4)
2
Y (N)
Y (N+1)
Y (N+2)
Y (N+3)
Y (N+4)
Cr(N+2)+Cr(N+6)
Y (N+5)
Cb (N+4)
2
Y6
Y7
CR
Cr2
Cb0+Cb4
2
Cr2+Cr6
2
Cb4
Cr6
Cb4+Cb8
2
Cr6
CLK
R, G, B
(Input)
Y
(Output)
Figure 12. RGB to YCbCr Timing, MODE = 011
RGB
(0)
RGB
(1)
RGB
(8)
RGB
(9)
RGB
(10)
RGB
(11)
Y(0)
Y(1)
Y(2)
Y(3)
CHS
CR
(Output)
RGB
(12)
RGB
(13)
Y(4)
Y(5)
Cb(0)
Cr(2)
Cb(4)
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