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Uart at 4Mbps. | Cypress Semiconductor

Uart at 4Mbps.

Summary: 1 Reply, Latest post by odissey1 on 11 Jul 2016 11:23 PM PDT
Verified Answers: 0
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neerajs_1714211's picture
1 post


Right now, I am using fx3 uart at baud rate of 115200 for file transfer. I want to use uart at much higher baud rate 4Mbps. I change the baud uart config as given below(also changed buad rate on imx Uart to 4Mbps). But i am not able to get desired result, almost half of data packet lost.

uartConfig.baudRate = CY_U3P_UART_BAUDRATE_4M;

uartConfig.stopBit = CY_U3P_UART_ONE_STOP_BIT;

uartConfig.parity = CY_U3P_UART_NO_PARITY;

uartConfig.txEnable = CyTrue;

uartConfig.rxEnable = CyFalse;

uartConfig.flowCtrl = CyFalse;

uartConfig.isDma = CyFalse;

I even try at lower baud rate , it is working at 230400. But at baud rate higher than 230400 it is not working. Do i need to make other changes in uart configuration apart from baud rate to achieve desired rate.

Please help me in this regard.

user_342122993's picture
529 posts


4MB may be not quite feasible, but 2MB is. You may find partial answer in this thread:


There is another high speed TX_UART implementation in PSoC Sensei blog, which claims to be faster:

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