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DLPC350 VSYNC/HSYNC pulse duration

RY9983
Guru 10570 points
Other Parts Discussed in Thread: DLPC350, DLPC300

Hello,
Do you have an spec of VSYNC/HSYNC pulse duration in DLPC350?

Although there are tp_vsw and tp_hsw in DLPC300, I can not find them in DLPC350.

Best regards, RY

DLPC300 : VSYNC/HSYNC pulse duration

  • 0
    TI__Mastermind 30875 points

    Hello RY9983,

    Unlike DLPC300, the DLPC350 controller is special one, it has a built-in state machine to process and lock to the source with variety of sources with variable timing information. The Table 8. displays the min and max values for both HSYNC and VYSNC pulse width. 

    The nominal values can be read from the EDID of the DLP LightCrafter 4500 EVM, a typical 1280x800 & 912x1140 resolution info is programmed.

    i am copying the same here,

    (54-71) Detailed Descriptor #1: Preferred Detailed Timing (1280x800 @ 60Hz)

    Pixel Clock : 83.5 MHz
    Horizontal Image Size : 518 mm
    Vertical Image Size : 324 mm
    Refresh Mode : Non-interlaced
    Normal Display, No Stereo

    Horizontal:
    Active Time : 1280 Pixels
    Blanking Time : 400 Pixels
    Sync Offset : 72 Pixels
    Sync Pulse Width: 128 Pixels
    Border : 0 Pixels
    Frequency : 49 kHz

    Vertical:
    Active Time : 800 Lines
    Blanking Time : 31 Lines
    Sync Offset : 10 Lines
    Sync Pulse Width: 6 Lines
    Border : 0 Lines

    Digital Separate, Horizontal Polarity (+), Vertical Polarity (+)

    (72-89) Detailed Descriptor #2: Detailed Timing (912x1140 @ 60Hz)

    Pixel Clock : 83.6 MHz
    Horizontal Image Size : 518 mm
    Vertical Image Size : 324 mm
    Refresh Mode : Non-interlaced
    Normal Display, No Stereo

    Horizontal:
    Active Time : 912 Pixels
    Blanking Time : 280 Pixels
    Sync Offset : 40 Pixels
    Sync Pulse Width: 64 Pixels
    Border : 0 Pixels
    Frequency : 70 kHz

    Vertical:
    Active Time : 1140 Lines
    Blanking Time : 30 Lines
    Sync Offset : 10 Lines
    Sync Pulse Width: 6 Lines
    Border : 0 Lines

    Digital Separate, Horizontal Polarity (+), Vertical Polarity (+)

    Let us know if we answered your query,

    Regards,

    Sanjeev