Hand Held Products IMAGETEAM IT4000HD, Руководство по интеграции

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IMAGETEAM™ 4X00 Series Integration Manual 2 - 3
Frame start of row/line 10 appears as a delay of ten lines from Vertical:
Frame start set to row/line 50 causes the last lines of the frame to occur first:
Horizontal Considerations
When you change the value of the column start register you do
not delay the data output. The value of this register sets a column
pointer that is allowed to roll over. The result is the output of all data from row 120 during the row 120 scan out period.
Example: If the column start value is set to 840 in an 858 column row, then the active column number 632 of row 120 is actually
seen at the beginning of row 120 (not 121), and the first 18 lines of row 120 occur at the end of 120. This means that
a movement of the active column start appears as a delay in time until the value set in registers 0x11, 0x10 reaches
a number that, when added to the active column count of 650, is greater than the frame width. For a start of 840, the
last 632 pixels are output first, with the first 18 output at the end of the row.
858 - (650+840) = -632
Typical row with column start set to 180, frame width 858:
Row with column start set to 840, frame width 858:
Active Pixel Window Alignment
The following settings are used to generate the timing signals that create a data valid window from the vertical and horizontal
synchronization signals from the IC Media ICM-105A.
Vertical
Frame Start
Row Data
F4:R90
0 525
Beg Fr 5
F4:R10
Vertical
End Fr 3
Row Data
F4:R490 F4:R50
Frame Start
Beg Fr 5
Horizontal
Column Start
Pixel Data
R20:C180 R20:C650
Horizontal
Pixel Data
End Row 19 R20:P19 R20:P650 R20:C840 Row 21
Column Start