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WARM reset pulse at power on

bharathiraja arumugam
Prodigy 30 points
Other Parts Discussed in Thread: OMAP3503, TPS65950

During power On,  we got 20 micro second pulse in the OMAP3503 used boards. refer the attachment to get more clarity. In the circuit, OMAP WARM reset is connected to WARM reset of TPS65950 and POP memory reset and through 4.7K pull-up to VIO1V8. No other component connected on this signal. This will affect the OMAP or TPS65950 or POP memory functionality or not. Here pulse magnitude is 0.6V. If it is more than 1V, it will affect the normal operation or not. This pulse will be latched up or not. Let me know the details ASAP, since we are in final delivery.

  • 0
    Prodigy 30 points

    During power On, we got 20 micro second pulse in WARM Reset of the OMAP3503. refer the previous attachment to get more clarity. In the circuit, OMAP WARM reset is connected to WARM reset of TPS65950 and POP memory reset and through 4.7K pull-up to VIO1V8. No other component connected on this signal. Will this affect the OMAP or TPS65950 or POP memory functionality?. Here pulse magnitude is 0.6V. If it is more than 1V, it will affect the normal operation or not. Is this pulse latched up or not?.

  • 0 in reply to bharathiraja arumugam
    Prodigy 220 points

    Hi,

     

    Did you ever fix this problem? I was reading about it and it sounded interesting.

    I would be interested to hear your results.

     

    Thanks.