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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VSC7440 датащи(PDF) 206 Page - Microsemi Corporation |
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VSC7440 датащи(HTML) 206 Page - Microsemi Corporation |
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206 / 444 page  Functional Descriptions VMDS-10492 VSC7440 Datasheet Revision 4.2 189 The device performs a final port of exit (POE) calculation in ingress device when destination is a global aggregated port. GLAG POE calculation must be enabled (ANA_AC::COMMON_VSTAX_CFG.VSTAX2_GLAG_ENA). When enabled, GLAG forwarding uses a portion of the PGID table (addresses 75 to 138). These addresses must use UPSID, UPSPN encoding by setting the stack interpret bit. POE calculation, which selects one of the global aggregated as destination port, is shown in the following illustration. Figure 42 • GLAG Port of Exit Calculation The total number of ports part of a GLAG must be specified in ANA_AC:GLAG:MBR_CNT_CFG. The corresponding destination must be configured in PGID table for each GLAG member. 3.23.1.5 Port Mask Operation The final destination port mask is deducted as shown in the following illustration. ANA_AC:GLAG:MBR_CNT_CFG Configures number of members per GLAG. 8 Table 120 • GLAG Forward Registers Overview (continued) Target::Register.Field Description Replication MAC Table dmac {glagid, glag_mbr_idx} {upsid, upspn} glagid glag_mbr_cnt_table glag_mbr_idx := ac mod glag_mbr_cnt glag part of PGID table glag_mbr_cnt |
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