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TL16C752B-EP: Transmission problem

Part Number: TL16C752B-EP
Other Parts Discussed in Thread: AM3359

Dear Technical Support Team,

We are using AM335x SOM from PHYTEC, we are using one of the chip select of AM3359 to connect  TL16C752B UART and some I/O ports. UART and I/O ports share same chip select. Now the problem is,  UART ports are not working (stop transmitting) when we are reading I/O ports . UART ports are working fine when we are not reading I/O ports. This problem is observed in few boards but not all the boards.  Is this problem related to timings of IOR and IOW or something else?

Could you please help us to find how I/O ports reading causing the problem to UART transmission.

Thanks & Regards,

Prabhakar