MB86296 Datasheet, PDF (98/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
8.5.2 RGB input format
There are the two data-processing methods in RGB input video capture function. One is the method of
processing with Native RGB. Another is the method of converting RGB into YUV422 by the internal
RGB pre processor.
RGB input function is suitable for relatively high speed non-interlaced video signals but the de-
interlacing operation is not available in this mode. The maximum input rate is 66Mpixel/sec. RGB
component data is 6bit.
Note:
- In Native RGB mode, NRGB=1 is set up.
1) RGB Input Signals
The signals used for RGB video capture are not assigned dedicated terminals but share same pins
with other functions.
Name
I/O Function
RGBCLK Input Clock for RGB input
RI5-0
Input Red component value
GI5-0
Input Green component value
BI5-0
Input Blue component value
VSYNCI Input Vertical sync for RGB capture
HSYNCI Input Horizontal sync for RGB capture
Note :
- input pins are shared with the ITU656 input and memory data bus.
- the VIS bit of the VCM (video capture mode) register selects which mode (ITU656 or RGB) is used.
2) Captured Range
Instead of embedded sync code method used in ITU656 mode, the capture range in RGB mode is
specified by the following register parameters:
a) RGB input mode of capture: Set RGB666 input flag(VIS) in VCM.
In Native RGB mode, NRGB in VCM =1 is set up.
b) HSYNC Cycle: Set the number of HSYNC Cycles in RGBHC.
c) Horizontal Enable area: Set enables area start position and
enable picture size into RGBHST and RGBHEN.
d) Vertical Enable area: Set enables area start position and
enable picture size into RGBVST and RGBVEN.
MB86296S<Coral-PA>
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Specification Manual Rev0.1