TMS320F28377D: Can F28377D's general SPI can run 50Mhz?

Hi Champ,

What's the max frequency of SPI when HS_MODE = 0? Please advise your idea if any, thanks.

Best regards,
Luke

Hi,

Simen Biao said:

Can F28377D's general SPI can run 50Mhz?

Nope, here's an example:

and the maximum LSPCLK can be equal to 100MHz which means you can achieve max of 25Mbps.

Regards,

Gautam

Just to make it clear, SPI interface on F28377D can run at 50MHz but only on specific PINMUX option (with HS_MODE = 1). On other pinmux option 50MHz operation is not guaranteed.

Regards,
Vivek Singh

Hi Gautam,

In SPRS880G.pdf, page 62.   LSPLCK can be max 200Mhz.

Why you say LSPCLK max is 100Mhz?

This makes me confused.

thanks,

best regards,

Simen

Hi Vivek,

Since F28377D general SPI cannot be guaranteed to operate 50 MHz.
Could Ti can provide a operation speed range clearly about general SPI?
I can not find it on datasheet.
thanks,


best regards,
Simen

Simen Biao said:

In SPRS880G.pdf, page 62.   LSPLCK can be max 200Mhz.

Why you say LSPCLK max is 100Mhz?

My mistake. You're right, LSPCLK can very well be 200MHz and as Vivek pointed out that at this LSPCLK - general SPI can achieve 50Mbps but then there's no guarantee.

Vivek and Gautam,

I appreciated for your answers, thanks.

best regards,
Simen