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VSC7440 датащи(PDF) 190 Page - Microsemi Corporation |
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VSC7440 датащи(HTML) 190 Page - Microsemi Corporation |
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190 / 444 page ![]() Functional Descriptions VMDS-10492 VSC7440 Datasheet Revision 4.2 173 CPU access to the MAC table is performed by an indirect command-based interface where a number of fields are configured (in LRN::MAC_TABLE_ACCESS_CFG_*) followed by specifying the command (in LRN::COMMON_ACCESS_CTRL.CPU_ACCESS_CMD). The access is initiated by a shot bit that is cleared upon completion of the command (LRN::COMMON_ACCESS_CTRL.MAC_TABLE_ACCESS_SHOT). It is possible to trigger CPU interrupt upon completion (ANA_L2:COMMON:INTR.LRN_ACCESS_COMPLETE_INTR). LRN::MAC_ACCESS_CFG_0 Configures MAC (most significant bits) and FID for MAC table entries. 1 LRN::MAC_ACCESS_CFG_1 Configures MAC address (Least significant bits) for MAC table entries and FID. 1 LRN::MAC_ACCESS_CFG_2 Configures the following MAC entry fields: ADDR ADDR_TYPE SRC_KILL_FWD NXT_LRN_ALL CPU_COPY VLAN_IGNORE AFE_FLAG AGE_INTERNAL MIRROR LOCKED VLD 1 LRN::EVENT_STICKY Sticky status for access performed. 1 LRN::SCAN_NEXT_CFG MAC table scan filter controls. 1 LRN::SCAN_NEXT_CFG_1 MAC table port move handles when performing MAC table SCAN. 1 ANA_L2::SCAN_FID_CTRL Controls use of additional FIDs when doing scan. 1 ANA_L2::SCAN_FID_CFG Configures additional VID/FID filters during scan if enabled via ANA_L2::SCAN_FID_CTRL. 16 LRN::SCAN_LAST_ROW_CFG Configures a last row applicable for scan.1 LRN::SCAN_NEXT_CNT MAC table status when performing MAC table SCAN. 1 LRN::LATEST_POS_STATUS Holds the latest CPU accessed MAC table location after a CPU_ACCESS_CMD has finished. 1 Table 109 • MAC Table Access Registers (continued) Target::Register.Field Description Replication |
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