Linux/PCM1681: PCM1681 SPI timing

xixi

Expert 2990 points

Part Number: PCM1681

Tool/software: Linux

HI all:

We used the pcm1681 to output four channels.

Now we can not write the pcm1681's register by the spi bus.

From the pcm1681' datasheet, we can not find any spi bus and spi timing support.

There are no spi timing diagram.

So please give us more datasheet to know more spi bus.

We want to know the spi mode?

Thanks

regards

over 5 years ago

0 Paul_Frost over 5 years ago

TI__Guru 53603 points

Hi Xixi,

The timing diagram can be found in section 8.3.8.5 Interface Timing Requirements.

0 xixi over 5 years ago in reply to Paul_Frost

Expert 2990 points

Hi paul

Thanks for your reply.

From the above spi timing, the spi mode is

cpol = 1

cpha = 0

Is that true？

Anther question is whether the spi bus is the standard spi bus?

Thanks

Regards

0 Paul_Frost over 5 years ago in reply to xixi

TI__Guru 53603 points

Hi Xixi,

I believe this would be either CPOL = 0, CPHA = 0 or CPOL=1, CPHA=1. The data is latched on the rising edge.

I am not sure what you mean by "standard SPI bus". I do not believe there is a standard for SPI bus design.

Thanks,
Paul

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Linux/PCM1681: PCM1681 SPI timing