NXP Semiconductors MPC5606S - Page 447

Display Control Unit (DCU)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 445
Figure 12-88. Relationship Between Hblank and Vblank in Internal Sync
12.8.2.5.3 PDI YCbCr mode
In this mode, the PDI extracts the ITU656 sync (FF-00-00), and sends the video to the processing
functions.The first processing function converts the 422 stream to a 444 stream, by providing interpolation
on the chroma components of the stream depending on PDI_INTERPOL_EN bit. The second processing
function converts the stream to RGB888/RGB565.
The RGB pixel value is computed using following equations:
Eqn. 12-6
Eqn. 12-7
Eqn. 12-8
Note that the first multiplication (i.e (y-16)*ycoeff) is unsigned. The other two others signed.
The register values after reset are as follows:
Yred = 10’h254 (596/512 = 1.16)
Crred = 11’h331 (817/512 = 1.6)
Cbred = 12’h000
Line 1
Frame of image data
Line 480
Frame blanking period
SAV
80
EAV
9D
EAV
B6
SAV
AB
Line blanking period
Note: The SAV and EAV bytes are included as part of the
blanking period.
Red
Y16–yred
512
-------------------------------------
Cr 128–Crred
512
-----------------------------------------
Cb 128–Cbred
512
-------------------------------------------
++=
Green
Y16–Ygreen
512
---------------------------------------------
Cr 128–Crgreen
512
------------------------------------------------
Cb 128–Cbgreen
512
--------------------------------------------------
++=
Blue
Y16–yblue
512
----------------------------------------
Cr 128–Crblue
512
--------------------------------------------
Cb 128–Cbblue
512
----------------------------------------------
++=