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SPCA701A Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part No. SPCA701A
Description  DIGITAL VIDEO ENCODER FOR VIDEOCD
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SPCA701A Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

 
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Sunplus Technology Co., Ltd.
5
Rev.: 0.2
1999.12.07
SPCA701A
Preliminary
VIDEO TIMING
The width of the analog horizontal sync pulses and the start and end of color burst is automatically calculated and
inserted for each mode according to CCIR-624-4.
Color burst is disabled on appropriate scan lines.
Serration and equalization pulses are generated on appropriate scan lines.
In addition, rise and fall times of
sync, and the burst envelope are internally controlled.
Video timing figures follow the text in this section.
SYNC AND BURST TIMING
Table 4 lists the resolutions and clock rates for the various modes of operation.
Table 5 lists the horizontal counter values for the end of horizontal sync, start of color burst, end of color burst,
front porch, back porch, and the first active pixel for the various modes of operation.
The front porch is the
interval before the next expected falling HSYNC* when outputs are automatically blanked.
The horizontal sync
width is measured between the 50% points of the falling and rising edges of horizontal sync.
The start of color
burst is measured between the 50% point of the falling edge of horizontal sync and the first 50% point of the color
burst amplitude (nominally +20 IRE for NTSC and 150 mV for PAL-B, D, G, H, I above the blanking level).
The
end of color burst is measured between the 50% point of the falling edge of horizontal sync and the last 50% point
of the color burst envelope (nominally +20 IRE for NTSC and 150 mV for PAL-B, D, G, H, I above the blanking
level).
Table 4. Field Resolutions and Clock Rates for Various Modes of Operation
Operating Mode
Active pixels
Total Pixels
CLK Frequency (MHz)
NTSC CCIR601
720 x 240
858 x 262
27
PAL-B,D,G,H,I
720 x 288
864 x 313
27
Table 5. Horizontal Counter Values for Various Video Timings
Operation Mode
Front porch
(a)
Horizontal
Sync Width (b)
Start of
Burst (c)
Duration of
Burst (d)
Back
porch (e)
NTSC CCIR601
20
63
72
34
127
PAL-B CCIR601
20
63
76
30
142
Notes: (1) The unit is the number of luminance pixel.


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