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MB86R02 ‘Jade-D’ Hardware Manual V1.64
18.7.5.2
RGB input format
Two data processing methods exist for RGB input video capture functionality:
processing of Native RGB
processing by converting RGB into YUV422 using the internal RGB preprocessor.
The RGB input function is suitable for relatively fast, non-interlaced video signals but de-interlacing is
not available in this mode. The maximum input rate is 66Mpixel/sec. Each RGB component is 6 bits
wide.
Note:
To use Native RGB mode, set the NRGB bit of the
VCM
register to '1'.
(1) RGB Input Signals
The RGB video capture input signals are not assigned to dedicated package pins. These pins are
shared with other device functions (multiplexed, check MUX Group #5).
Name
I/O
Function
CCLK1
Input
Clock for RGB input
RI1_7:RI1_2
Input
Red component value
GI1_7:GI1_2
Input
Green component value
BI1_7:BI1_2
Input
Blue component value
VINVSYNC1
Input
Vertical sync for RGB capture
HINVSYNC1
Input
Horizontal sync for RGB capture
Note 1 :
Input pins are shared with the ITU656 input and memory data bus.
Note 2 :
The VIS bit of the
VCM
(video capture mode) register selects which mode (RBT
ITU656/601 or RGB) is used.
(2) Captured Range
In comparison to the embedded sync code method used in ITU656 input mode, the capture range
in RGB mode is specified by register parameters, as shown below:
a) RGB input capture mode: Set the RGB666 input flag (VIS) in the
VCM
register.
For Native RGB mode, set NRGB=1 in the
VCM
register.
b) HSYNC Cycle: Set the number of HSYNC Cycles in RGBHC.
c) Horizontal Enable area: Set the area start position and picture size in RGBHST and RGBHEN.
d) Vertical Enable area: Set the area start position picture size in RGBVST and RGBVEN.
The capture area is defined according to the following parameters (each parameter is set
independently in the respective register):
Summary of Contents for MB86R02
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