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TL16C754C: TL16CP754CI SERIAL_IIR_RLS interrupt issue.

Part Number: TL16C754C

Hi,

1.System: Wince

2.TL16CP754CI sent & receive data is right when my data is less than 20byte.

3.If my data is long than 20byte TL16CP754 will return SERIAL_IIR_RLS interrupt successive, It means RX_FIFO error.

   Now read LSR=0x1110 0001,LSR[4:1] No error,LSR[7]=1At least one parity error, framing error or break indication are stored in the receiver FIFO.            Bit 7 is cleared when no errors are present in the FIFO.

I need know why TL16CP754 enter the SERIAL_IIR_RLS interrupt, How to solve this issue, Thanks a lot!

 

 

SERIAL_IIR_RLS