5 Via Sharing

The Via Channel Array BGA pattern implemented on the AM62 design offers several opportunities for via sharing. Vias are shared across BGA pins. Figure 5-1 and Figure 5-2 show the via sharing opportunities for VDDR_CORE and VSS domains, respectively. Figure 5-1 assumes that VDD_CORE and VDDR_CORE domains are separate. If these domains are merged, more via sharing opportunities are presented, as shown in Figure 5-3. Via sharing across BGA pins provides for easier escape routing and also stronger electrical connections by connecting multiple pins.

Figure 5-1 Via Sharing for VDDR_CORE Domain

Figure 5-2 Via Sharing for VSS

Figure 5-3 Via Sharing for Merged VDD_CORE and VDDR_CORE Domains