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AM3359 and gigabit switch EMAC

Jaya Kumar
Expert 1190 points
Other Parts Discussed in Thread: AM3359

Hi,

Quick question on AM3359 and the 10/100/1000 EMAC. I see from http://processors.wiki.ti.com/index.php/Device:AM335x:Device_Evaluation , that the 2 EMACs are described as a 2-port switch. Does this mean that the SoC is capable of host independent packet switching? So if the kernel running on AM3359 panics crashes for some reason, the switching capability of the 2 ports is still present and functional?

Thanks!

  • 0
    TI__Intellectual 1835 points

    Yes, the switch is capable of autonomously switching packets between the two Ethernet ports as well as the third port, which faces the inside of the chip and copy packets to/from memory to Ethernet ports based on switching rules. Now, there is also a capability called "reset isolation" that allows for a host processor reboot without causing any interruption in the packets that are flowing between the two Ethernet ports. Please refer to the technical reference manual for the procedural requirements that must be fulfilled for correct implementation of reset isolation. 

    Thanks,

    Maneesh