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  • BQ27441-G1: SCL line stuck low

    Resolved
    Part Number: BQ27441-G1 Hi, We have a board with a BQ27441-G1 which works fine, except where in very rare cases (thousands of hours and readings from the gauge) we found the SCL line being held down by the battery gauge. Except for power-cycling the…
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    • Answered

  • DS90UB947-Q1: How to set SCL High/Low Time

    Resolved
    Part Number: DS90UB947-Q1 Tool/software: Hi team, I want to check register setting for SCL High/Low Time. Could you check below procedure is correct or not. They want to set I2C frequency 400kHz. In this case, cycle time is 2.5us and CLK high time…
    • Resolved

  • RE: TMS320F280039C: How to solve PMBUS lock when SCL keep High and SDA keep Low?

    Shaoxing, There is a SOFTPRES20 Register in this device to reset the PMBUS module. This can be explored for bringing the bus out of stuck state. It can be used by software to reset and get out of the stuck state. Please ask customer to try it and…
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  • MSPM0L1305: How to inform an I2C target to release the I2C bus? (SDA stuck low)

    Resolved
    Part Number: MSPM0L1305 Other Parts Discussed in Thread: BQ76952 Hi, Background: I am currently working with a custom board that features an MSPM0L1305 as the main MCU, communicating with two BQ76952 chips via I2C. Upon resetting the MCU, I sometimes…
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    • Answered

  • BQ34Z100: SCL getting held low on I2C

    Resolved
    Part Number: BQ34Z100 Tool/software: Gauge team, Our customer is working with BQ34Z100 in a battery pack. The fuel gauge pulls the clock line low indefinitely and the only way to get it to release is a power cycle of the gauge. The clock is running…
    • Resolved

  • DRV5015-Q1: Output stuck at high or low, can recover

    Part Number: DRV5015-Q1 Other Parts Discussed in Thread: DRV5015 , DRV5056 Tool/software: Hi Team, We are using 2pcs of DRV5015-Q1 above a motor coil for the position sensing. While there is possibility that the output of DRV5015 can stuck at high…
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  • MSPM0-SDK: I2C SCL Clock Low Timeout (I2CTIMEOUT_CTL register) count setting.

    Resolved
    Part Number: MSPM0-SDK Tool/software: Hello, When reading the MSPM0Gx_TRM_revA, section "18.2.3.6 SCL Clock Low Timeout" indicates that the count that should be set in the TCNTLA register has: "Each count is equal to a timeout period of (1 + TPR) × 12…
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    • Answered

  • BQ76952: How to inform the target (bq76952) to release the I2C bus? (SDA stuck low)

    Resolved
    Part Number: BQ76952 Other Parts Discussed in Thread: MSPM0L1305 , Hi, Background: I am currently working with a custom board that features an MSPM0L1305 as the main MCU, communicating with two BQ76952 chips via I2C. Upon resetting the MCU, I sometimes…
    • Resolved

  • MSP430FR5969: I2C SCL and Bus Busy Bit Stuck Low

    Part Number: MSP430FR5969 Sometimes when doing USCI B I2C with communications the SCL line and Bus Busy get stuck low after a slave device doesn't correctly send an NACK. I don't think there's any way to prevent that from happening but I need to be able…
    • Answered

  • TMS320F280039C: When SCL Clock low timeout, PMBUS peripherals will automatically reset.

    Resolved
    Part Number: TMS320F280039C Tool/software: Hi Experts, I am asking for my customer here. When SCL Clock low timeout, PMBUS peripherals will automatically reset. The customer has tested this phenomenon, but no similar description or evidence is found…
    • Resolved

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