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AM3358: UART with HW flow control data loss

Part Number: AM3358

Dear Champs,

My customer found data loss in UART communication with HW flow control enabled while busy control, but there was no issue without flow control(HW flow control disabled)

Could you please check below their HW schematic and let me know what should be checked further to resolve this issue?

They found data loss as below(15,000,000 Byte transfer at 115200 baud rate).

1) HW flow control

2) Non flow control

Thanks and Best Regards,

SI.