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DM9081 Datasheet(PDF) 2 Page - Davicom Semiconductor, Inc. |
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DM9081 Datasheet(HTML) 2 Page - Davicom Semiconductor, Inc. |
2 / 22 page DM9081 10BASE-T Hub Controller 2 Final Version: DM9081-DS-F02 February 02, 2001 Table of Contents General Description.................................................. 1 Block Diagram .......................................................... 1 Table Of Contents .................................................... 2 Features.................................................................... 3 Pin Configuration ...................................................... 3 Pin Description ......................................................... 4 Functional Description .............................................. 6 Repeater function .................................................. 6 Signal Regeneration.............................................. 6 Collision Function .................................................. 6 Auto Partition/Reconnection.................................. 6 Fragment Extension .............................................. 6 Link Integrity Test .................................................. 6 Jabber Lockup Protection ..................................... 7 Reset ..................................................................... 7 Expansion Port ...................................................... 7 External Logic........................................................ 8 LED Functions....................................................... 9 Collision Status...................................................... 9 AUI1 Port Status.................................................... 9 AUI2 Port Status.................................................... 9 Minimum Mode...................................................... 9 TP Port Status ....................................................... 9 Normal Mode....................................................... 10 LED Latch............................................................ 10 AUI Ports Status.................................................. 11 TP Ports Bit Rate Error Status ............................ 11 TP Ports Jabber Status ....................................... 11 TP Ports Partition Status ..................................... 11 Traffic Status ....................................................... 11 TP Port Link Status ............................................. 11 DM9081 Chip External Components .................. 12 Absolute Maximum Ratings ................................... 13 DC Electrical Characteristics.................................. 13 AC Characteristics.................................................. 14 Timing Waveforms Expansion Port Input Timing............................... 15 Expansion Port Output Timing ............................ 15 Expansion Port Collision Timing ......................... 16 AUI Transmit Timing ........................................... 16 AUI Receive Timing ............................................ 17 AUI Collision Timing............................................ 17 Transmit Timing .................................................. 17 Receive Timing ................................................... 18 Link Integrity Timing ............................................ 18 Layout Recommendation Decoupling .......................................................... 19 Power Plane........................................................ 19 Package Information .............................................. 21 Ordering Information .............................................. 22 Disclaimer............................................................... 22 Company Overview ................................................ 22 Products ................................................................. 22 Contact Windows ................................................... 22 |
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