I found an inconsistency between the Manual and Website. In Vybrid Reference Manual Rev. 5 07/2013 Pg. 575, a 176 LQFP device will not support the L2 switch, but in the page from below link,
VF3xx Product Summary Page ,VF3xx all provided with QFP176 and can support L2 switch. So I want to know whether VF3XX with QFP176 package have Ethernet switch or not.