MSTM-S4E

C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. 60505. W I N F I E L D AURORA, IL851-5040. FAX (630) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) MSTM-S4E PIN ASSIGNMENT DESCRIPTION The Connor-Winfield Stratum 4E Simplified Control Timing Module acts as a complete system clock module for general Stratum 4E timing applications. The MSTM is designed for external control functions. Full external control input allows for selection and monitoring of any of four possible operating states: 1) Holdover, 2) External Reference #1, 3) External Reference #2, and 4) Free Run. TABLE 1.0 illustrates the control signal inputs and the corresponding operational states: In the absence of External Control Inputs (A,B), the MSTM enters the Free Run mode and signals an External Alarm. The MSTM will enter other operating modes upon application of a proper control signal. Mode 1 operation (A=1, B=0) results in an output signal that is phase locked to the External Reference Input #1. Mode 2 operation (A=0, B=1) results in an output signal that is phase locked to External Reference Input #2. Holdover mode operation (A=1, B=1) results in an output signal at or near the frequency as determined by the latest (last) locked-signal input values and the holdover performance of the MSTM. Alarm signals are generated at the Alarm Output during Holdover and Free Run operation. Alarm Signals are also generated by Loss-of-Lock, Loss-of-Reference, and by a TuneLimit indication from the PLL. A Tune-Limit alarm signal indicates that the VCXO tuning voltage is approaching within 10% the limits of its lock capability and that the External Reference Input may be erroneous. A high level indicates an alarm condition. Realtime indication of the operational mode is available at unique operating mode outputs on pins 1-4. Control loop filters effectively attenuate any reference jitter and smooth out phase transients. CNTL_A CNTL_B 2:4 +5Vdc EX_REF 1 GND EX_REF 2 GND CLK_OUT GND SYNC_OUT GND HOLDOVER REF_1 REF_2 FREERUN GND ALARM_OUT CNTL_A CNTL_B PLL_TVL BOTTOM VIEW BLOCK DIAGRAM 0 1 2 3 FREERUN REF 1 REF 2 HOLDOVER PLL_ TVL FREERUN HOLDOVER ALARM OUT EX_REF_ 1 EX_REF_2 2:1 MUX PHASE COMPARATOR LOCK AND DETECTION 2:1 MUX DAC FILTERS DAC STRATUM 4 VCXO SYNC_OUT TUNING VOLTAGE MONITOR PLL_TVL FIFO STRATUM 4 TCXO CLK_OUT MSTM-S4E TABLE 1.0 C ON TR OL IN PU T A 0 1 B 0 0 External Reference #1 External Reference #2 Free Run (D efault) Normal Tune Li mi t LOR + LOL Normal Tune Li mi t LOR + LOL Holdover 0 1 1 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 1 0 1 1 1 OPER ATION AL MOD E R E F _1 R E F _2 H OL D OVER FR E E R U N P L L _T V L AL AR M OU TPU T 0 1 INT 1 1 Specifications subject to change without notice. PAGE 1 OF 5 REV:________ DATE:____________ © Copyright 2000 Connor-Winfield all rights reserved. 01 7/3/00 DATA SHEET #: ____________ TM015 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. 60505. W I N F I E L D AURORA, IL851-5040. FAX (630) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) TABLE 2.0 SYMB OL V cc VIN TSTG NOTE 1.0: ABSOLUTE MAXIMUM RATING MIN IMU M -0.5 -0.5 -65.0 N OMIN AL MAXIMU M +7.0 Vcc+0.5 +150.0 U N ITS Volts Volts deg. C N OTES 1.0 1.0 1.0 PAR AMETER Power supply voltage (Vcc to GND ) Input voltage wi th respect to ground Storage temperature TABLE 3.0 SYMB OL VIH VIL TIN C IN VOH VOL THL TLH TRIP TRIN TOP1 Operation of the device at these or any other conditions beyond those listed under Rocommended Operating Conditions is not implied. Exposure to Absolute Maximum Ratings conditions for extended periods of time may affect device reliability. INPUT AND OUTPUT CHARACTERISTICS MIN IMU M 2.0 0 N OMIN AL PAR AMETER Hi gh level i nput voltage (TTL C ompati ble) Low level i nput voltage (TTL C ompati ble) Input si gnal transi ti on ti me Input capaci tance Hi gh level output voltage @ IOH= -8.0 mA, Vcc mi ni mum Low level output voltage @ IOL= 8.0 mA, Vcc maxi mum C lock out transi ti on ti me hi gh-to-low, no load C lock out transi ti on ti me low-to-hi gh, no load Input 8 KHz reference si gnal posi ti ve pulse wi dth Input 8 KHz reference si gnal negati ve pulse wi dth Standard Operati ng Temperature MAXIMU M V cc 0.8 250 15 U N ITS V V nS pF V N OTES 3.86 0.4 4.0 4.0 30 30 0 70 V nS nS nS nS deg. C TABLE 4.0 PAR AMETER Frequency Range Supply C urrent Ti mi ng Reference Inputs Ji tter and Phase Tolerance Wander Generati on Free-Run Accuracy Holdover Stabi li ty Ini ti al Offset Temperature D ri ft Holdover Hi story Pull-i n / Hold-i n Range Lock Ti me C orrecti on Peri od TVL Alarm INT DATA SHEET #: ____________ TM015 PAGE 2 OF 5 SPECIFICATIONS N OTES 16.384 MHz , 19.44 MHz 60 mA Typi cal at 16.384 MHz 8 KHz Ref-GR-1244-C ORE 4.2-4.4 Ref-GR-1244-C ORE 5.3 32 ppm < 32 ppm 0.1 ppm 25 ppm 0.1 ppm 30 seconds ±32 ppm Mi ni mum , ±100ppm Maxi mum < 1 0 0 se cs 125 uS 1= WARNING: Reference neari ng operati onal li mi t 7.0 3.0 2.0 6.0 5.0 Specifications subject to change without notice. REV:________ DATE:____________ © Copyright 2000 Connor-Winfield all rights reserved. 01 7/3/00 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. 60505. W I N F I E L D AURORA, IL851-5040. FAX (630) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) MSTM-S4E PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 HOLDOVER REF _1 REF_2 FREERUN GND ALARM_OUT CNTL_A CNTL_B PLL_TVL GND SYNC_OUT GND CLK_OUT GND EX_REF_2 GND EX_REF_1 +5 Vdc PIN DESCRIPTION -Output. High when the control inputs select Holdover. -Ouput. High when the control inputs select EX REF_1. -Output. High when the control inputs select EX REF_2. -Output. High when the control input selects Free Run. -Ground. -Ouput. =1,If (FREERUN + HOLDOVER + LOS + LOL + PLL_TVL) . -Mode control input. -Mode control input. -Tuning Voltage Alarm. =1 If CAPTURE RANGE NEAR 10% OF EXTREME -Ground. -Syncronized output. -Ground. -Stratum 4 TCXO output. (Non-synchronized). -Ground. -External Reference #2 Input. (8 KHz) -Ground. -Input. External Reference #1 Input. (8 KHz) +5 Volt DC supply. NOTES FOR TABLES 1-3 NOTES: 2.0 Holdover stability is the cumulative fractional frequency offset containing Initial Offset, Temperature, and Drift components as described by Bellcore GR-1244-CORE 5.2. Pull-in range is the minimum frequency deviation on the reference inputs to the timing module that can be overcome to pull itself into synchronization with the reference. After 100 seconds at stable room temperature. Consult factory for other output frequencies. Ref- GR1244-CORE 3.2.1 R3-1. A ‘1’ level indicates unit is within the extreme 10% of its operating range tracking the reference 3.0 4.0 5.0 6.0 7.0 INT DATA SHEET #: ____________ TM015 PAGE 3 OF 5 Specifications subject to change without notice. REV:________ DATE:____________ © Copyright 2000 Connor-Winfield all rights reserved. 01 7/3/00 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. 60505. W I N F I E L D AURORA, IL851-5040. FAX (630) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) APPLICATIONS CIRCUIT DIAGRAM MSTM-S4E PACKAGE WITH COVER NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK,etc. FREE RUN CLOCK COPY 5 VOLT DC POWER SUPPLY MSTM-S4E BLOCK DIAGRAM +5Vdc EX_REF_1 GND EX_REF_2 GND CLK_OUT GND SYSTEM CLOCK SYNC_OUT GND HOLDLAST REF_1 REF_2 FREERUN GND ALARM_OUT CNTL_A CNTL_B PLL_TVL SYSTEM CONTROL AND DATA INPUTS LOSS-OFREFERENCE MONITOR SECTION MECHANICAL CHARACTERISTICS MECHANICAL SHOCK 883D 2002 CONDITION B 1500 G’s 0.5 ms. VIBRATION 883D-2007 C0NDITION A 0.06” DA or 20 g Peak Acceleration 20 to 2000 Hz. BOTTOM VIEW ENVIRONMENTAL CHARACTERISTICS TEMPERATURE CYCLE 883D METHOD 1010.7 CONDITION B 10 Cycles -55 to +125 Degrees C. HTOB - HIGH TEMPERATURE OPERATING BIAS 1000 Hours +125 Degrees C. FACTORY RELIABILITY AUDIT TEMPERATURE CYCLE 500 Cycles -55 to +125 Degrees C. HTOB - HIGH TEMPERATURE OPERATING BIAS 1000 Hours +125 Degrees C. INT DATA SHEET #: ____________ TM015 PAGE 4 OF 5 Specifications subject to change without notice. REV:________ DATE:____________ © Copyright 2000 Connor-Winfield all rights reserved. 01 7/3/00 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. 60505. W I N F I E L D AURORA, IL851-5040. FAX (630) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 4E SIMPLIFIED CONTROL TIMING MODULES (MSTM-S4E) Revision History: 7/5/00 -Made general corrections INT DATA SHEET #: ____________ TM015 PAGE 5 OF 5 Specifications subject to change without notice. REV:________ DATE:____________ © Copyright 2000 Connor-Winfield all rights reserved. 01 7/3/00