Hi there
According to spec of TLIN1021DRQ1,
if pull low "EN" pin, TLIN1021DRQ1 would get into sleep mode and turn "INH" pin off
But currently "INH" pin keeps high voltage output , transceiver stops data communication
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Hi there
According to spec of TLIN1021DRQ1,
if pull low "EN" pin, TLIN1021DRQ1 would get into sleep mode and turn "INH" pin off
But currently "INH" pin keeps high voltage output , transceiver stops data communication
Hi Arthur,
When in sleep mode INH is high-Z and not pulled to ground. Depending on the PCB leakage and parasitic capacitance it may take a while to discharge. If you don't have a pull-down resistance on this pin, you may want to try that. 100 kOhm is a common value.
It is also possible that you successfully transition to sleep mode but then the device transitions to standby mode due to detection of a wake event. In standby mode the INH pin would be re-asserted high. Events that could trigger this wake-up transition would be a change of state on the WAKE terminal or activity on the LIN bus that meets the wake-up criteria. You can refer to Section 9.4.4 of the datasheet for further details on this.
Regards,
Max
Hi Max
Thanks your reply!
I added a 100 kohm resister connect INH pin to groud but not useful
Arthur,
Thanks for checking. Did you also look into the possibility of the device waking up into standby mode due to activity on LIN or toggling on WAKE?
Max
Hi Max
It's solved
I guess speed of processor is too fast, after sleep mode executed,
the lin bus package still transmit checksum and also wake transceiver up