PXD10RM Datasheet, PDF (447/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Line 1
SAV
EAV
80
Frame of image data
9D
Line 480
SAV
Frame blanking period
EAV
AB
B6
Note: The SAV and EAV bytes are included as part of the
blanking period.
Figure 12-90. 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:
Red
=
_---Y_------–_----1_---6_----_---_---y_----r_--e_---d_-
512
+
_---C_----r_----–_----1_---2_---8_----_--C_----r_---r_--e_---d_--
512
+
_---C_----b_-----–_----1_---2_---8_----_--C_----b_----r_--e_---d_--
512
Eqn. 12-59
Green
=
_---Y_------–_----1_---6_----_---_---Y_-----g_---r_---e_---e_---n_-
512
+
_---C_----r_----–_----1_---2_---8_----_--C_----r_---g_---r_---e_---e_---n_-
512
+
_---C_----b_-----–_----1_---2_---8_----_--C_----b_----g_---r_---e_---e_---n_-
512
Eqn. 12-60
Blue = ^---^Y------^–----¹---⁶----^---^---^y----^b---^l--^u---^e- + ^---^C----^r----^–----¹---²---⁸----^--^C----^r---^b---^l--^u----^e- + ^---^C----^b-----^–----¹---²---⁸----^--^C----^b----^b---^l--^u----^e-
512
512
512
Eqn. 12-61
Note that the first multiplication (i.e (y-16)*ycoeff) is unsigned, the two others are 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
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
12-115