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IDT82V3385 Datasheet(PDF) 3 Page - Integrated Device Technology |
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IDT82V3385 Datasheet(HTML) 3 Page - Integrated Device Technology |
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3 / 145 page  Table of Contents 3 May 14, 2010 FEATURES.............................................................................................................................................................................. 9 HIGHLIGHTS.................................................................................................................................................................................................... 9 MAIN FEATURES ............................................................................................................................................................................................ 9 OTHER FEATURES......................................................................................................................................................................................... 9 APPLICATIONS....................................................................................................................................................................... 9 DESCRIPTION....................................................................................................................................................................... 10 FUNCTIONAL BLOCK DIAGRAM ........................................................................................................................................ 11 1 PIN ASSIGNMENT ........................................................................................................................................................... 12 2 PIN DESCRIPTION .......................................................................................................................................................... 13 3 FUNCTIONAL DESCRIPTION ......................................................................................................................................... 18 3.1 RESET ........................................................................................................................................................................................................... 18 3.2 MASTER CLOCK .......................................................................................................................................................................................... 18 3.3 INPUT CLOCKS & FRAME SYNC SIGNAL ................................................................................................................................................. 18 3.3.1 Input Clocks .................................................................................................................................................................................... 18 3.3.2 Frame SYNC Input Signals ............................................................................................................................................................ 18 3.4 INPUT CLOCK PRE-DIVIDER ...................................................................................................................................................................... 19 3.5 INPUT CLOCK QUALITY MONITORING ..................................................................................................................................................... 21 3.5.1 Activity Monitoring ......................................................................................................................................................................... 21 3.5.2 Frequency Monitoring ................................................................................................................................................................... 22 3.6 T0 / T4 DPLL INPUT CLOCK SELECTION .................................................................................................................................................. 23 3.6.1 External Fast Selection (T0 only) .................................................................................................................................................. 23 3.6.2 Forced Selection ............................................................................................................................................................................ 24 3.6.3 Automatic Selection ....................................................................................................................................................................... 24 3.7 SELECTED INPUT CLOCK MONITORING .................................................................................................................................................. 25 3.7.1 T0 / T4 DPLL Locking Detection ................................................................................................................................................... 25 3.7.1.1 Fast Loss .......................................................................................................................................................................... 25 3.7.1.2 Coarse Phase Loss .......................................................................................................................................................... 25 3.7.1.3 Fine Phase Loss ............................................................................................................................................................... 25 3.7.1.4 Hard Limit Exceeding ....................................................................................................................................................... 25 3.7.2 Locking Status ............................................................................................................................................................................... 25 3.7.3 Phase Lock Alarm (T0 only) .......................................................................................................................................................... 26 3.8 SELECTED INPUT CLOCK SWITCH ........................................................................................................................................................... 27 3.8.1 Input Clock Validity ........................................................................................................................................................................ 27 3.8.2 Selected Input Clock Switch ......................................................................................................................................................... 27 3.8.2.1 Revertive Switch ............................................................................................................................................................... 27 3.8.2.2 Non-Revertive Switch (T0 only) ........................................................................................................................................ 28 3.8.3 Selected / Qualified Input Clocks Indication ................................................................................................................................ 28 3.9 SELECTED INPUT CLOCK STATUS VS. DPLL OPERATING MODE ....................................................................................................... 29 3.9.1 T0 Selected Input Clock vs. DPLL Operating Mode .................................................................................................................... 29 3.9.2 T4 Selected Input Clock vs. DPLL Operating Mode .................................................................................................................... 31 3.10 T0 / T4 DPLL OPERATING MODE ............................................................................................................................................................... 32 3.10.1 T0 DPLL Operating Mode .............................................................................................................................................................. 32 3.10.1.1 Free-Run Mode ................................................................................................................................................................ 32 3.10.1.2 Pre-Locked Mode ............................................................................................................................................................. 32 3.10.1.3 Locked Mode .................................................................................................................................................................... 32 3.10.1.3.1 Temp-Holdover Mode .................................................................................................................................... 32 Table of Contents |
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