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CS8900A-IQ3 Datasheet(PDF) 3 Page - Cirrus Logic |
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CS8900A-IQ3 Datasheet(HTML) 3 Page - Cirrus Logic |
3 / 128 page DS271PP3 3 CS8900A Crystal LAN™ ISA Ethernet Controller CIRRUS LOGIC PRODUCT DATA SHEET 3.4.7.1 Determining EEPROM Size ............................................................................................. 23 3.4.7.2 Loading Configuration Data .............................................................................................24 3.4.8 EEPROM Read-out Completion ................................................................................................ 24 3.5 Programming the EEPROM ................................................................................................................ 24 3.5.1 EEPROM Commands................................................................................................................ 24 3.5.2 EEPROM Command Execution.................................................................................................24 3.5.3 Enabling Access to the EEPROM ............................................................................................. 25 3.5.4 Writing and Erasing the EEPROM............................................................................................. 25 3.6 Boot PROM Operation ........................................................................................................................ 25 3.6.1 Accessing the Boot PROM ........................................................................................................ 25 3.6.2 Configuring the CS8900A for Boot PROM Operation................................................................ 25 3.7 Low-Power Modes .............................................................................................................................. 26 3.7.1 Hardware Standby ..................................................................................................................... 26 3.7.2 Hardware Suspend .................................................................................................................... 26 3.7.3 Software Suspend ..................................................................................................................... 27 3.8 LED Outputs........................................................................................................................................ 28 3.8.0.1 LANLED ........................................................................................................................... 28 3.8.0.2 LINKLED or HC0.............................................................................................................. 28 3.8.0.3 BSTATUS or HC1 ............................................................................................................ 28 3.8.1 LED Connection ........................................................................................................................ 28 3.9 Media Access Control ......................................................................................................................... 28 3.9.1 Overview.................................................................................................................................... 28 3.9.2 Frame Encapsulation and Decapsulation .................................................................................. 29 3.9.2.1 Transmission.................................................................................................................... 29 3.9.2.2 Reception ......................................................................................................................... 29 3.9.2.3 Enforcing Minimum Frame Size ....................................................................................... 29 3.9.3 Transmit Error Detection and Handling ..................................................................................... 30 3.9.3.1 Loss of Carrier.................................................................................................................. 30 3.9.3.2 SQE Error......................................................................................................................... 30 3.9.3.3 Out-of-Window (Late) Collision ........................................................................................ 30 3.9.3.4 Jabber Error ..................................................................................................................... 30 3.9.3.5 Transmit Collision............................................................................................................. 30 3.9.3.6 Transmit Underrun ........................................................................................................... 30 3.9.4 Receive Error Detection and Handling ...................................................................................... 31 3.9.4.1 CRC Error ........................................................................................................................ 31 3.9.4.2 Runt Frame ...................................................................................................................... 31 3.9.4.3 Extra Data ........................................................................................................................ 31 3.9.4.4 Dribble Bits and Alignment Error...................................................................................... 31 3.9.5 Media Access Management ...................................................................................................... 31 3.9.5.1 Collision Avoidance.......................................................................................................... 31 3.9.5.2 Two-Part Deferral............................................................................................................. 31 3.9.5.3 Simple Deferral ................................................................................................................ 32 3.9.5.4 Collision Resolution.......................................................................................................... 32 3.9.5.5 Normal Collisions ............................................................................................................. 32 3.9.5.6 Late Collisions.................................................................................................................. 33 3.9.5.7 Backoff ............................................................................................................................. 33 3.9.5.8 Standard Backoff.............................................................................................................. 33 3.9.5.9 Modified Backoff............................................................................................................... 33 3.9.5.10 SQE Test........................................................................................................................ 33 3.10 Encoder/Decoder (ENDEC) .............................................................................................................. 34 3.10.1 Encoder ................................................................................................................................... 34 3.10.2 Carrier Detection ..................................................................................................................... 34 3.10.3 Clock and Data Recovery ........................................................................................................ 34 |
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