W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 27

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

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5.7.4 Related Pins
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VIN[0:7] (in/out)
HSI (input)
VSI (input)
VCLK (input)
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CP2/C/Blue (output)
CP1/Y/Green (output)
CP0/Red (output)
HSO (output)
W90221X version 0.6
Video Overlay Logic
Display Interface
Video-in interface
Display interface
During normal mode, this bus inputs 8-bit digital components of YCbCr 4:2:2 video-in
data from external video controller (e.g. TV decoder or MPEG decoder). During test
mode, this bus outputs 8-bit digital components of YCbCr 4:2:2 video-out generated by
internal video accelerator (VA).
Horizontal sync of video-in frames: The content of VAconf[?] determines the polarity of
this signal.
Vertical Sync of video-in frames: The content of VAconf[?] determines the polarity of this
signal.
As mentioned in section 5.1 "Clock Module and PLL"
During composite video mode (NTSC, PAL), this pin is analog "composite video" output.
During S-Video mode, this pin is analog "chrominance" output. During monitor mode,
this analog output supplies current corresponding to the "blue" intensity of the pixel
being displayed. (To maintain IBM VGA compatibility, R-G-B outputs are typically
terminated to monitor's ground with a 2% 75 ohms resistor. This resistor, in parallel with
the 75 ohms resistor in the monitor, will yield 37.5 ohms impedance to ground. For a full-
scale voltage of 700 mV, full-scale current output will be 18.7mA.)
During composite video mode (NTSC, PAL), this pin is analog "composite video" output.
During S-Video mode, this pin is analog "luminance" output. During monitor mode, this
analog output supplies current corresponding to the "green"
During composite video mode (NTSC, PAL), this pin is analog "composite video" output.
During S-Video mode, this pin left no connection. During monitor mode, this analog
output supplies current corresponding to the "red" intensity of the pixel being displayed.
Provide color key and window key
Full screen display switch for graphics and video data
Supports analog monitor up to 800x600 resolution, high color, non-interlace, 40MHz
pixel clock and 60 frames/sec
On chip TV encoder supporting NTSC, PAL or PAL-M system
RCA-style composite video and S-Video
Triple 8-bit RGB video DACs are integrated
3-line flicker free filter
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