TMS320F28375D: How to connect 2 CPU (F2837xD x 2chip)

Kazu,

You can use SPI. EMIF is a master only interface, and you cannot connect two masters together directly. You would need some complicated glue logic sitting in between the two devices.

With SPI, you just connect TX to RX, and RX to TX. One device would have to be the master and supply the SPI clock.

You could also use McBSP, and then you do not need a bus master since McBSP allows independent transmit and receive.

Regards,
David

Hi David,

Thanks for your input.

We would like to communicate two MCU. because,  it would like to reduce each of CPU load.

So, we need high speed I/F. You mentioned "You would need some complicated glue logic sitting in between the two device".

Could you tell us this detail information for realize EMIF I/F. We will offir to use SPI. but, if EMIF I/F is possible, we would like to use this method.

Regards,

Kz777

Kz777,

To connect two EMIFs, you'd basically need to build a shared memory interface in the middle, including some sort of mailbox memory.  I don't have any diagrams of this.

If you just want high-speed interconnect, you might also look at the uPP peripheral.  See the TRM SPRUHM8F.  You supposedly can connect two of these together.

Regards,

David

Hi Devid,
Thanks. If they use uPP base connection , do you have good sample code for their use case ?
Regards,
Kz777

Thanks. Devid. I will close this thread. If we have an additional question, I will post to another thread.

Hi,

Please note that uPP interface will not be supported on future C2000 devices hence I would suggest to use SPI interface for this communication.

Regards,

Vivek Singh