IDT82V3010 T1/E1/OC3 Telecom Clock Generator with Dual Reference Inputs
Table Of Contents 3 November 14, 2012
TABLE OF CONTENTS
1 Pin Description...................................................................................................................................................................................................7
2 Functional Description......................................................................................................................................................................................9
2.1 State Control Circuit ..................................................................................................................................................................................9
2.1.1 Normal Mode..............................................................................................................................................................................10
2.1.2 Fast Lock Mode..........................................................................................................................................................................10
2.1.3 Holdover Mode...........................................................................................................................................................................10
2.1.4 Freerun Mode.............................................................................................................................................................................10
2.2 Frequency Select Circuit .........................................................................................................................................................................10
2.3 Reference Input Switch ...........................................................................................................................................................................10
2.4 Reference Input Monitor..........................................................................................................................................................................11
2.5 Invalid Input Signal Detection..................................................................................................................................................................11
2.6 TIE Control Block.....................................................................................................................................................................................11
2.7 DPLL Block..............................................................................................................................................................................................12
2.7.1 Phase Detector (PHD)................................................................................................................................................................12
2.7.2 Limiter.........................................................................................................................................................................................12
2.7.3 Loop Filter ..................................................................................................................................................................................13
2.7.4 Fraction Block.............................................................................................................................................................................13
2.7.5 Digital Control Oscillator (DCO)..................................................................................................................................................13
2.7.6 Lock Indicator.............................................................................................................................................................................13
2.7.7 Output Interface..........................................................................................................................................................................13
2.8 OSC.........................................................................................................................................................................................................14
2.8.1 Clock Oscillator ..........................................................................................................................................................................14
2.9 JTAG .......................................................................................................................................................................................................14
2.10 Reset, Lock and TIE Application .............................................................................................................................................................14
2.11 Power Supply Filtering Techniques.........................................................................................................................................................15
3 Measures of Performance...............................................................................................................................................................................16
3.1 Intrinsic Jitter ...........................................................................................................................................................................................16
3.2 Jitter Tolerance........................................................................................................................................................................................16
3.3 Jitter Transfer ..........................................................................................................................................................................................16
3.4 Frequency Accuracy................................................................................................................................................................................16
3.5 Holdover Accuracy ..................................................................................................................................................................................16
3.6 Capture Range ........................................................................................................................................................................................16
3.7 Lock Range .............................................................................................................................................................................................16
3.8 Phase Slope............................................................................................................................................................................................16
3.9 Time Interval Error (TIE)..........................................................................................................................................................................16
3.10 Maximum Time Interval Error (MTIE) ......................................................................................................................................................16
3.11 Phase Continuity .....................................................................................................................................................................................16
3.12 Phase Lock Time.....................................................................................................................................................................................17
4 Absolute Maximum Ratings............................................................................................................................................................................18
5 Recommended DC Operating Conditions .....................................................................................................................................................18
6 DC Electrical Characteristics..........................................................................................................................................................................18
6.1 Single End Input/Output Port...................................................................................................................................................................18
6.2 Differential Output Port (LVDS) ...............................................................................................................................................................19
7 AC Electrical Characteristics..........................................................................................................................................................................20
7.1 Performance............................................................................................................................................................................................20
7.2 Intrinsic Jitter Unfiltered...........................................................................................................................................................................20
7.3 C1.5o (1.544 MHz) Intrinsic Jitter Filtered...............................................................................................................................................21
7.4 C2o (2.048 MHz) Intrinsic Jitter Filtered..................................................................................................................................................21
7.5 C19o (19.44 MHz) Intrinsic Jitter Filtered................................................................................................................................................21
7.6 8 kHz Input to 8 kHz Output Jitter Transfer .............................................................................................................................................21
7.7 1.544 MHz Input to 1.544 MHz Output Jitter Transfer.........................................................................
....................................................22
7.8 2.048 MHz Input to 2.048 MHz Output Jitter Transfer.............................................................................................................................22
