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82555 — Networking Silicon
iv
Datasheet
Contents
5.3.3 10BASE-T Error Detection and Reporting .................................................22
5.4 10BASE-T Collision Detection.......................................................................................22
5.5 10BASE-T Link Integrity................................................................................................22
5.6 10BASE-T Jabber Control Function..............................................................................22
5.7 10BASE-T Full Duplex ..................................................................................................23
6.0 REPEATER MODE ....................................................................................................................25
6.1 Special Repeater Features............................................................................................25
6.2 Connectivity...................................................................................................................25
7.0 MANAGEMENT DATA INTERFACE..........................................................................................27
7.1 MDI Frame Structure..................................................................................................... 27
7.2 MDI Registers................................................................................................................28
7.2.1 MDI Registers 0 - 7.................................................................................... 28
7.2.2 MDI Registers 8 - 15.................................................................................. 31
7.2.3 MDI Registers 16 - 31................................................................................31
8.0 AUTO-NEGOTIATION FUNCTIONALITY.................................................................................. 35
8.1 Description ....................................................................................................................35
8.2 Parallel Detect and Auto-Negotiation ............................................................................36
9.0 LED DESCRIPTIONS ................................................................................................................39
10.0 RESET AND MISCELLANEOUS TEST MODES.......................................................................41
10.1 Reset............................................................................................................................. 41
10.2 Loopback.......................................................................................................................41
10.3 Scrambler Bypass .........................................................................................................41
10.4 Test Port........................................................................................................................41
11.0 ELECTRICAL SPECIFICATIONS AND TIMING PARAMETERS .............................................. 43
11.1 Absolute Maximum Ratings ..........................................................................................43
11.2 General Operating Conditions ......................................................................................43
11.3 DC Characteristics ........................................................................................................43
11.3.1 MII DC Characteristics ..............................................................................43
11.3.2 10BASE-T Voltage/Current DC Characteristics ........................................43
11.3.3 100BASE-TX Voltage/Current DC Characteristics ................................... 44
11.4 AC Characteristics.........................................................................................................45
11.4.1 MII Clock Specifications.............................................................................45
11.4.2 MII Timing Parameters .............................................................................. 46
11.4.3 Repeater Mode Timing Parameters ..........................................................47
11.4.4 Transmit Packet Timing Parameters .........................................................48
11.4.5 Squelch Test Timing Parameters ..............................................................48
11.4.6 Jabber Timing Parameters ........................................................................49
11.4.7 Receive Packet Timing Parameters ..........................................................49
11.4.8 10BASE-T Normal Link Pulse (NLP) Timing Parameters .........................50
11.4.9 Auto-Negotiation Fast Link Pulse (FLP) Timing Parameters ....................50
11.4.10 Reset Timing Parameters .........................................................................51
11.4.11 X1 Clock Specifications ............................................................................51
11.4.12 100BASE-TX Transmitter AC Specification ..............................................52
12.0 82555 PACKAGE INFORMATION.............................................................................................53