Skip to main content
PGroe.2
Associate III
April 2, 2021
Solved

Reference Manual no TXE in SPIx_CR2 Register?

  • April 2, 2021
  • 2 replies
  • 1015 views

Hi

In your Reference Manual for the STM32F469 at 31.3.11 it says:

A DMA access is requested when the TXE or RXNE enable bit in the SPIx_CR2 register is
set.

But the SPIx_CR2 Register does not have a TXE/RXNE bit, it has a TXEIE/RXNEIE bit which just en-/disables the Interrupt. Is this a typo or on purpose? The only TXE/RXNE bits I found are in the SPI_SR register...

This topic has been closed for replies.
Best answer by Imen GH

Hello,

The sentence is wrong, and it should be corrected as follow:

“A DMA access is requested when the TXDMAEN or RXDMAEN enable bit in the SPIx_CR2 register is set�?

On my side, I will raise the typo internally for fix.

Thanks for pointing out this error.

Imen

2 replies

Imen GH
Imen GHBest answer
ST Employee
April 2, 2021

Hello,

The sentence is wrong, and it should be corrected as follow:

“A DMA access is requested when the TXDMAEN or RXDMAEN enable bit in the SPIx_CR2 register is set�?

On my side, I will raise the typo internally for fix.

Thanks for pointing out this error.

Imen

PGroe.2
PGroe.2Author
Associate III
April 2, 2021

Thanks for the fix... It just confused me as electronics beginner ;)