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AM3352: Will wrong stop bit result in UART receive data error?

Part Number: AM3352

Set in 2 stop bit mode for communication, but Tx side sometimes only send out 1 stop bit, on AM3352 side received data will be wrong. 

customer said on other competitor's platform, it won't impact the data sanity, although report frame error on both platform.

I can understand the stop bit impact TX signal direct, but I did not find detail about stop bit on receiving, even the stop bit length is wrong, received data sit in shift data register already, it should not impact data sanity.