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TDA4VM: What is the difference between CSPW9G port2 and Port 3/4?

Part Number: TDA4VM

Hi,

I use  Processor SDK RTOS 8.0.0(QNX+RTOS). 

I connect a PHY to port 3/4 of CPSW9g.   

When I execute ifconfig an0 192.1682.1.202 netmask 255.555.55.0 UP, R5F LOG will print the following information:

[MCU2_0]     31.566898 s: Function:CpswProxyServer_registerIpv4MacHandlerCb,HostId:0,Handle:a2fc7b94,CoreKey:38acb7e6, MacAddress:70:ff:76:1d:92:c1 IPv4Addr:192.168.1.202

[MCU2_0]     31.567000 s: 

[MCU2_0]  SNo.      IP Address          MAC Address   

[MCU2_0]     31.567034 s: ------    -------------     -----------------

[MCU2_0]     31.567063 s:   1       192.168.1.202     70:ff:76:1d:92:c1

 But when I connect the Phy to CPSW9G port 2, the R5F log does not print the above log.  R5F LOG shows that PHY is Linked.

What is the difference between CSPW9G port2 and Port 3/4?