Index: /trunk/platforms/tsar_generic_iob/top.cpp
===================================================================
--- /trunk/platforms/tsar_generic_iob/top.cpp	(revision 1003)
+++ /trunk/platforms/tsar_generic_iob/top.cpp	(revision 1004)
@@ -1042,5 +1042,6 @@
                                            0,                // mac_4 address
                                            0,                // mac_2 address
-                                           1 );              // NIC_MODE_SYNTHESIS
+                                           1,                // NIC_MODE_SYNTHESIS
+                                           12);              // INTER_FRAME_GAP
 
     // Frame Buffer
@@ -1099,5 +1100,7 @@
                                            IntTab(0, IOX_CDMA_TGT_ID),
                                            64,          // burst size (bytes)
-                                           NB_CMA_CHANNELS );
+                                           NB_CMA_CHANNELS,
+                                           4 );         // number of pipelined bursts
+
     // Multi-TTY controller
     std::vector<std::string> vect_names;
Index: /trunk/platforms/tsar_generic_leti/top.cpp
===================================================================
--- /trunk/platforms/tsar_generic_leti/top.cpp	(revision 1003)
+++ /trunk/platforms/tsar_generic_leti/top.cpp	(revision 1004)
@@ -792,5 +792,6 @@
                 0,                // default MAC_4 address
                 0,                // default MAC_2 address
-                1 );              // NIC_MODE_SYNTHESIS
+                1,                // NIC_MODE_SYNTHESIS
+                12 );             // INTER_FRAME_GAP
 
     ///////////// vci_chbuf_dma
@@ -802,5 +803,6 @@
                 IntTab(cluster_io, CDMA_TGTID),
                 64,                               // burst size
-                NB_CMA_CHANNELS );
+                NB_CMA_CHANNELS,
+                4 );                              // number of pipelined bursts
 
     ////////////// vci_multi_tty