updated comments in 3d_sb_siv arch file

Author: soheilshahrouz

vtr_flow/arch/multi_die/stratixiv_3d/3d_SB_inter_die_stratixiv_arch.timing.xml

@@ -48331,25 +48331,25 @@
   <scatter_gather_list>
     <sg_pattern name="name" type="unidir">
         <gather>
-          <!-- Gather 30 connections from the end of 'wire' nodes at all four sides of a switchblock location -->
-            <wireconn num_conns="7" from_type="L4" from_switchpoint="1" side="rltb"/>
+          <!-- Gather 30 connections from the end of L4 wires at all four sides of a switchblock location -->
+            <wireconn num_conns="30" from_type="L4" from_switchpoint="3" side="rltb"/>
         </gather>
 
         <scatter>
-          <!-- Scatter 30 connections to the start of 'wire' nodes at all four sides of a switchblock location -->
-            <wireconn num_conns="7" to_type="L4" to_switchpoint="0" side="rtl"/>
+          <!-- Scatter 30 connections to the start of L4 wires at all four sides of a switchblock location -->
+            <wireconn num_conns="30" to_type="L4" to_switchpoint="0" side="rtl"/>
         </scatter>
 
         <sg_link_list>
-          <!-- Link going up one layer, using the 'sw' multiplexer to gather connections from the bottom layer and using the 'wire' node/wire to move up one layer -->
-          <sg_link name="L_UP" z_offset="1" x_offset="0" y_offset="0" mux="seg4_inter_die_driver" seg_type="L4"/>
-          <!-- Link going down one layer, using the 'sw' multiplexer to gather connections from the top layer and using the 'wire' node/wire to down up one layer -->
+          <!-- Link going up one layer, using the 'seg4_inter_die_driver' multiplexer to gather connections from the bottom layer and using the LZ node/wire to move up one layer -->
+          <sg_link name="L_UP" z_offset="1" x_offset="0" y_offset="0" mux="seg4_inter_die_driver" seg_type="LZ"/>
+          <!-- Link going down one layer, using the 'seg4_inter_die_driver' multiplexer to gather connections from the top layer and using the LZ node/wire to down up one layer -->
           <sg_link name="L_DOWN" z_offset="-1" mux="seg4_inter_die_driver" seg_type="L4"/>
         </sg_link_list>
 
-        <!-- Instantiate 10 'L_UP' sg_links per switchblock location everywhere on the device -->
-        <sg_location type="EVERYWHERE" num="1" sg_link_name="L_UP"/>
-        <sg_location type="EVERYWHERE" num="1" sg_link_name="L_DOWN"/>
+        <!-- Instantiate 6 'L_UP' and 6 'L_DOWN' sg_links per switchblock location everywhere on the device -->
+        <sg_location type="EVERYWHERE" num="6" sg_link_name="L_UP"/>
+        <sg_location type="EVERYWHERE" num="6" sg_link_name="L_DOWN"/>
     </sg_pattern>
   </scatter_gather_list>
 </architecture>