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IDT82P2808 Datasheet(PDF) 3 Page - Integrated Device Technology |
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IDT82P2808 Datasheet(HTML) 3 Page - Integrated Device Technology |
3 / 144 page Table of Contents 3 January 11, 2007 TABLE OF CONTENTS ........................................................................................................................................................... 3 LIST OF TABLES .................................................................................................................................................................... 7 LIST OF FIGURES ................................................................................................................................................................... 8 FEATURES............................................................................................................................................................................. 10 APPLICATIONS...................................................................................................................................................................... 11 DESCRIPTION........................................................................................................................................................................ 11 BLOCK DIAGRAM ................................................................................................................................................................. 12 1 PIN ASSIGNMENT .......................................................................................................................................................... 13 2 PIN DESCRIPTION ......................................................................................................................................................... 14 3 FUNCTIONAL DESCRIPTION ........................................................................................................................................ 24 3.1 T1 / E1 / J1 MODE SELECTION .............................................................................................................................. 24 3.2 RECEIVE PATH ....................................................................................................................................................... 24 3.2.1 Rx Termination ............................................................................................................................................ 24 3.2.1.1 Receive Differential Mode ........................................................................................................... 24 3.2.1.2 Receive Single Ended Mode ....................................................................................................... 26 3.2.2 Equalizer ..................................................................................................................................................... 27 3.2.2.1 Line Monitor ................................................................................................................................ 27 3.2.2.2 Receive Sensitivity ...................................................................................................................... 27 3.2.3 Slicer ........................................................................................................................................................... 28 3.2.4 Rx Clock & Data Recovery ......................................................................................................................... 28 3.2.5 Decoder ...................................................................................................................................................... 28 3.2.6 Receive System Interface ........................................................................................................................... 28 3.2.7 Receiver Power Down ................................................................................................................................ 29 3.3 TRANSMIT PATH .................................................................................................................................................... 29 3.3.1 Transmit System Interface .......................................................................................................................... 29 3.3.2 Tx Clock Recovery ...................................................................................................................................... 30 3.3.3 Encoder ....................................................................................................................................................... 30 3.3.4 Waveform Shaper ....................................................................................................................................... 30 3.3.4.1 Preset Waveform Template ........................................................................................................ 30 3.3.4.2 User-Programmable Arbitrary Waveform .................................................................................... 32 3.3.5 Line Driver ................................................................................................................................................... 34 3.3.5.1 Transmit Over Current Protection ............................................................................................... 34 3.3.6 Tx Termination ............................................................................................................................................ 34 3.3.6.1 Transmit Differential Mode .......................................................................................................... 34 3.3.6.2 Transmit Single Ended Mode ...................................................................................................... 35 3.3.7 Transmitter Power Down ............................................................................................................................ 36 3.3.8 Output High-Z on TTIP and TRING ............................................................................................................ 36 3.4 JITTER ATTENUATOR (RJA & TJA) ....................................................................................................................... 37 Table of Contents |
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