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AM79C985 датащи(PDF) 34 Page - Advanced Micro Devices |
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AM79C985 датащи(HTML) 34 Page - Advanced Micro Devices |
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34 / 48 page ![]() 34 Am79C985 PRELIMINARY Visual Status Display LDA/B[4:0] and LDGA/B provide visual status indicators for the eIMR+. LDA/B[4:0] displays Link, Carrier Sense, Collision, and Partition information for the TP and AUI ports. LDGA/B display global Carrier Sense, Collision, and Jabber information. In a multiple eIMR+ configuration, the global LED driv- ers (LDGA/B) from each chip can be tied together to drive a single pair of global status LEDs. The open drain output of these drivers facilitate this configuration. Refer to Figure 15. Figure 15. Visual Status Display Connection LDA[4:0] LDB[4:0] LDGA LDGB LDA[4:0] LDB[4:0] LDGA LDGB eIMR+ eIMR+ VDD 20651B-20 |
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