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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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DM9081F Scheda tecnica(PDF) 5 Page - List of Unclassifed Manufacturers |
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DM9081F Scheda tecnica(HTML) 5 Page - List of Unclassifed Manufacturers |
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5 / 22 page  DM9081 Final 5 Version: DM9081-DS-F01 April 22, 1997 Pin Description Pin No. Pin Name I/O Description Miscellaneous 3, 4, 9, 30, 40, 50, 83, 93 DVDD P Digital Power 14, 21, 35, 45, 88, 98 DGND P Digital Ground 18 RESET# I Active low to reset the internal logic of DM9081. It should be synchronized to X2 if multiple DM9081s are used 20, 19 TESTPIN0 TESTPIN1 I These two pins are used to select LED display mode. Normal mode is selected if both pins are connected to VDD. Minimum mode is selected if both pins are connected to GND. Other settings are prohibited 26, 29 NC - These pins should be left open 27 X2 I A 20MHz oscillator or crystal should be attached to this pin 28 X1 O This pin is used in crystal connection only. It is left open when using an oscillator 67, 81 AVDD P Analog Power 68, 82 AGND P Analog Ground LED Display Pins 5LED_LATCH (LI/RX7) O This pin is used to latch the serial LED information from pins 6 to 13 In minimum mode, this pin sends out TP7 Link and Carrier Sense status 6AUI_LED (LI/RX6) O This pin transmits AUI port status synchronous to TCK In minimum mode, this pin sends out TP6 Link and Carrier Sense status 7TP_BIT_LED (LI/RX5) O This pin sends out global bit rate error status of the DM9081 Hub In minimum mode, this pin sends out TP5 Link and Carrier Sense status 8 TP_POL_LED (LI/RX4) O In minimum mode, this pin sends out TP4 Link and Carrier Sense status 10 TP_JAB_LED (LI/RX3) O This pin transmits global jabber status of the DM9081 Hub In minimum mode, this pin sends out TP3 Link and Carrier Sense status 11 TRAFFIC_LED (LI/RX2) O This pin sends out utilization of 10MHz bandwidth synchronous to TCK In minimum mode, this pin sends out TP2 Link and Carrier Sense status 12 TP_PAR_LED (LI/RX1) O This pin sends out the partition status synchronous to TCK for the eight TP ports In minimum mode, this pin sends out TP1 Link and Carrier Sense status 13 TP_LINK_LED (LI/RX0) O This pin sends out the link and carrier sense status synchronous to TCK for the eight TP ports In minimum mode, this pin sends out TP0 Link and Carrier Sense status 15 AUI1_CRS_LED O Active low for 52ms when AUI Port 1 detects carrier 16 AUI2_CRS_LED O Active low for 52ms when AUI Port 2 detects carrier 17 COL_LED O Active low for 26ms when collision is detected 25 TCK O A 10MHz clock synchronous to X2 |
Codice articolo simile - DM9081F |
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Descrizione simile - DM9081F |
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