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TNETX15VE 数据表(PDF) 62 Page - Texas Instruments |
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TNETX15VE 数据表(HTML) 62 Page - Texas Instruments |
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62 / 113 page  TNETX15VE VLAN-ENGINE ADDRESS-LOOKUP DEVICE SPWS028B – APRIL 1997 – REVISED SEPTEMBER 1997 62 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PRINCIPLES OF OPERATION lookup table SRAM allocation (continued) For unicast addresses, Table 9 (see Figure 11) is allocated as follows: BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 CUPLNK Port code Pointer to internal SRAM For a multicast address, Table 9 (see Figure 11) is allocated as follows: BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Reserved Pointer to internal SRAM The internal SRAM allocation for unicasts is as follows: WORD A WORD B Flags/port codings Age-time-stamp Word A for unicasts has the following definition: BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 NBLOCK SECURE LOCKED NEW Reserved The internal SRAM allocation for multicasts is as follows: WORD A WORD B Flags/port codings Reserved Word A for multicasts has the following definition: BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 NBLOCK Port bit vector code |
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