AMIC110: DDR-less EtherCAT

paddu2017

Part Number: AMIC110
Other Parts Discussed in Thread: TIDEP-0105

Hi,

Is it possible to implement DDR less EtherCAT application on AMIC110 without an external MCU or DDR?

The older ISDKs had example projects which runs only on the internal L2 cache. I do understand this ISDK is not supported now.
processors.wiki.ti.com/.../AM335x_SYSBIOS_Industrial_SDK_01.00.00.03_Release_Notes
"Demonstrate DDR-less operation both with NOR XIP, SPI boot and using only the internal on-chip memory"

But the latest Processor SDK or the TI-Design (TIDEP-0105) mentions that we need to use an external MCU
to use AMIC110 without DDR.

Please let me know if it is possible to run EtherCAT on AMIC110 with Cache-Locking feature?
or this is not a supported feature?

If DDR or an External MCU is required, DDR+PMIC+AMIC110 would be too expensive solution for EtherCAT,
whereas other makers have inbuilt memory and less expensive power solution.

Best Regards
paddu

over 5 years ago

0 Biser Gatchev-XID over 5 years ago

TI__Guru**** 393215 points

The RTOS team have been notified. They will respond here.

0 Paula Carrillo over 5 years ago

TI__Mastermind 32740 points

Hi Paddu, yes, it is possible to run EtherCAT slave on AMIC110 without DDR. We are about to release PRU-ICSS EtherCAT slave 1.0.6 (next few days) which makes easier to build and run DDR less application compared to our current 1.0.5 version. If you want to give a try, I would suggest wait few more days until we have this version on ti.com

thank you,

Paula

0 paddu2017 over 5 years ago in reply to Paula Carrillo

Expert 2885 points

Hi Paula,

Thank you for the information,
glad to hear about the new EtherCAT slave SDK.

Other than EtherCAT, is it possble to implement the same for other
protocols like Ethernet/IP and Profinet?..Do we need DDRx for these protocols?

Best Regards
paddu

0 Paula Carrillo over 5 years ago in reply to paddu2017

TI__Mastermind 32740 points

Hi Paddu, different optimizations and strategies were done in order to convert EtherCAT slave to DDRless on AMIC110. Other protocols (such as Profinet, and EthernetIP) are bigger, so it would be really difficult to create a DDRless implementation on AMIC110. Other Sitara platforms, with bigger internal memory, could work, but we would need to do the analysis.

thank you,
Paula

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AMIC110: DDR-less EtherCAT