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lepton 3 start up time

This topic contains 1 reply, has 1 voice, and was last updated by Profile photo of Peter Peter 1 month, 1 week ago.

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  • #18478

    Profile photo of Peter
    Peter

    Participant

    Hello,
    I am wanting to know the minimum time duration from powerup before I can receive image data. FCC would be set to manual and not performed on powerup. As far as I can see from the datasheet I need to wait at least 5000 clk cycles. Assuming stable input voltages and clock what is the minimum time needed before image data can be clocked out? Thanks in advance

    #18483

    Profile photo of Peter
    Peter

    Participant

    FYI, from the Software Interface Description Document (IDD):

    a. Wait 950 milliseconds minimum after power on, clocks applied, and RESET_L de-asserted
    • If the camera has an attached shutter, the minimum wait period should be
    extended to 5 seconds to allow the camera’s automatic execution of a flat-field
    correction (Auto FFC mode).
    b. Read the STATUS register (register address 0x0002) bit 2
    • If Bit 2 is 0, then the camera has not booted yet, extend the wait period.
    • If Bit 2 is 1, then the camera has booted, I2C interface is available
    c. Read the STATUS register (register address 0x0002) bit 0
    • If Bit 0 is 1, then the interface is busy, poll until Bit 0 becomes 0
    • If Bit 0 is 0, then the interface is ready for receiving commands.

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