eSCI uart receive bit order

270284440 · ‎2017-03-09

Posted on March 09, 2017 at 10:44

Hi,

Refer to reference manual RM0029 Page1362, while using eSCI as UART mode,

1) for SCI data register eSCI_DR,what's meaning for two lines below 15:0(R), 0:15(W)?

2) while bit sequence D0->D7(10101101) received on UART_RXD line (bit order is D0->D7), how data

stored in eSCI_DR register?

a) eSCI_DR[7:0] = D[0:7](10101101)

b) eSCI_DR[7:0] = D[7:0](10110101)

which one is correct,why?

Thanks in advanced.

#esci

Erwan YVIN · ‎2017-03-09

Posted on March 09, 2017 at 10:48

Yes , the RM is not clear

I would take

eSCI_DR[7:0] = D[7:0](10110101)

Best regards

Erwan

270284440 · ‎2017-03-09

Posted on March 10, 2017 at 04:04

Hi, Erwan

May I confirm item 1)

What is digitial 15-0 of R, and digital 0-15 of W?

Does digital 0 Most Significant Bit, and digital 15 means least Significant Bit ?