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数据搜索系统，热门电子元器件搜索 |
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KSZ9563R 数据表(PDF) 42 Page - Microchip Technology |
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KSZ9563R 数据表(HTML) 42 Page - Microchip Technology |
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42 / 226 page  KSZ9563R DS00002419D-page 42 2017-2018 Microchip Technology Inc. 4.4.17.1 Processing Entry Description The Processing Entry consists of two parameters as described in Table 4-15. The examples in Figure 4-7 are interpreted as follows: • Rule #0: Test the matching rule entry #0. If true, apply action rule entry #0. • Rule #1: Test the matching rule entry #1. If true, apply action rule entry #0. • Rule #2: Test the matching rule entry #2. If true, apply action rule entry #1. • Matching rule entry #3 is configured for the counter function. Action entry #3 is used to hold the corresponding count value. • Rule #4: Test the matching rule entries #4, 5 and 6. If all are true, apply action rule entry #4. • Rule #6: Test the matching rule entry #6. If true, apply action rule entry #5. • Rule #8: Test the matching rule entries #7 and 11. If both are true, apply action rule entry #9. No more than one action can be taken for any packet. If the matching conditions are true for multiple RuleSets, then the corresponding FRN field with the lowest value (highest priority) determines the action to be taken. TABLE 4-15: ACL PROCESSING ENTRY PARAMETERS Parameter Description FRN[3:0] First Rule Number Pointer to an Action rule entry. Possible values are 0 to 15. If all Matching rules speci- fied in the RuleSet are evaluated true, then this is the resulting Action rule. RuleSet[15:0] Specifies a set of one or more Matching rule entries. RuleSet has one bit for each of the 16 Matching rule entries. If multiple Matching rules are selected, then all conditions will be AND'ed to produce a final match result. 0 = Matching rule not selected 1 = Matching rule selected FIGURE 4-7: ACL STRUCTURE AND EXAMPLE RULE VALUES FRN 0 0 1 4 5 9 #0 #15 #14 #13 #12 #11 #10 #9 #8 #7 #6 #5 #4 #3 #2 #1 0 1 2 none 4, 5, 6 none 6 none 7, 11 none none none none none none none RuleSet Processing Field Entry Number Entry #0 Entry #1 Entry #2 Entry #3 Entry #4 Entry #5 Entry #6 Entry #7 Entry #8 Entry #9 Entry #10 Entry #11 Entry #12 Entry #13 Entry #14 Entry #15 Entry #0 Entry #1 Entry #2 Entry #3 Entry #4 Entry #5 Entry #6 Entry #7 Entry #8 Entry #9 Entry #10 Entry #11 Entry #12 Entry #13 Entry #14 Entry #15 Action Rule Matching Rule Action Field OR AND When counter function is enabled in Matching Rule. |
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