PROCESSOR-SDK-AM64X: 如何扩展出2各千兆网口和2各EtherCAT工业网口

xiansheng xiao

Part Number: PROCESSOR-SDK-AM64X
Other Parts Discussed in Thread: AM6442, SYSCONFIG

我希望在AM6442上扩展四个网口：其中2各千兆网口，用于普通对外通信；另外2各工业百兆网口，需要支持EtherCAT(打算设计2各主站)。

请问该如何合理设计呢？我目前采用sysconfig工具，打算配置PRU_ICSSG用于EtherCAT（MII接口），配置CPSW3G用于千兆网口(RGMII接口)。但是目前PRU_ICSSG的COL和CRS有冲突，请问有其他推荐方法来实现么？求指导

4 年多前

0 Shine 4 年多前

TI__Guru**** 357097 points

我把您的问题升级到英文e2e论坛了，请参考下面工程师的回复。
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1166830/am6442-sysconfig-rgmii-and-ethercat-pins-confliction

The AM64x has 6 possible Ethernet ports (2 CPSW, 4 PRUETH), but some of the signals are muxed to the same pins. So only 5 ports can actually be used at the same time. See this thread for more information: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1018412/am6442-ethernet-ports

Can you use the other ICSSG for the PRU Ethernet ports?

0 xiansheng xiao 4 年多前回复 Shine

感谢，回复中提到可以试试使用ICSSG来实现2个千兆网口，我调整了一下，确实可以。

不过我想咨询一下，这样会不会引起资源占用冲突呢？会不会影响EtherCAT网口的使用？

0 Shine 3 年多前回复 xiansheng xiao

TI__Guru**** 357097 points

工程师有回复。

Either of these options should work fine.

OPTION 1
CPSW: 2 gigabit Ethernet ports
ICSSG0 or ICSSG1 (whichever does not have pinmux conflicts with CPSW): 2 EtherCAT ports

OPTION 2
ICSSG0 or 1: 2 gigabit Ethernet ports
The other ICSSG: 2 EtherCAT ports

Each ICSSG can have up to two Ethernet ports. I believe that we do NOT support using different protocols on the same ICSSG. i.e., I do NOT think we support this usecase: ICSSG0 port 0 = gigabit Ethernet, ICSSG0 port 1 = EtherCAT. I am reassigning the thread to another team member to verify that I am correct.

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PROCESSOR-SDK-AM64X: 如何扩展出2各千兆网口和2各EtherCAT工业网口