DM9081FP DAVICOM [Davicom Semiconductor, Inc.], DM9081FP Datasheet - Page 2

• Manufacturer Part Number: DM9081FP
• Description: 10BASE-T Hub Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

Table of Contents
General Description.................................................. 1
Block Diagram .......................................................... 1
Table Of Contents .................................................... 2
Features.................................................................... 3
Pin Configuration ...................................................... 3
Pin Description ......................................................... 4
Functional Description .............................................. 6
2
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
Absolute Maximum Ratings ................................... 13
DC Electrical Characteristics.................................. 13
AC Characteristics.................................................. 14
Timing Waveforms
Layout Recommendation
Package Information .............................................. 21
Ordering Information .............................................. 22
Disclaimer............................................................... 22
Company Overview ................................................ 22
Products ................................................................. 22
Contact Windows ................................................... 22
DM9081 Chip External Components .................. 12
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
Decoupling .......................................................... 19
Power Plane........................................................ 19
10BASE-T Hub Controller
Version: DM9081-DS-F02
DM9081
February 02, 2001
Final