THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) Fig. 1.0 DESCRIPTION MSTM-S3 PIN ASSIGNMENT The Connor-Winfield Stratum 3 Miniature Simplified Control Timing Module acts as a complete system clock module for general Stratum 3 timing applications. The MSTM is designed for external control functions. Full external control input allows for selections and monitoring of any of four possible operating states: 1) Holdover, 2) External Reference #1, 3) External Reference #2, and 4) Free Run. The table below illustrates the control signal inputs and 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 Tune-Limit indication from the PLL. A Tune-Limit alarm signal indicates that the OCXO 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. Real-time 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. HOLDOVER REF 1 REF2 FREERUN GND ALARM OUT CNTL A CNTL B +5Vdc EX REF 1 GND EX REF 2 GND CLK_OUT GND SYNC_OUT GND PLL TVL BOTTOM VIEW Fig. 2.0 BLOCK DIAGRAM CNTL A CNTL B EX REF 1 EX REF 2 0 1 2:4 23 FREERUN REF 1 REF 2 HOLDOVER PLL TVL FREE RUN HOLDOVER LOCK AND DETECTION 2:1 MUX ALARM OUT SYNC_OUT DAC FILTERS DAC STRATUM3 OCXO TUNING VOLTAGE MONITOR FIFO TCXO No Connect CLK_OUT PLL TVL MSTM-S3 Table 1.0 CONTROL INPUT A B 0 0 1 0 1 0 1 1 OPERATIONAL MODE REF 1 REF 2 HLDOVER FREERUN PLL TVL ALARM OUTPUT 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 Free Run (Default) External Normal Reference #1 Tune Limit LOS+LOL External Normal Reference #2 Tune Limit LOS+LOL Holdover DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 1 of 7 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) Fig. 3.0 1 0 0 0 T R A N P r o f ile 1200 1000 800 TIE (ns) 600 400 200 0 50 60 70 80 90 100 -2 0 0 T im e ( s ) Fig 4.0 S a m p le W a n d e r G e n e r a t io n ( T D E V ) f o r S T M /M S T M -S 3 1 .0 E - 6 T ypical r es po ns e - 3 0 0 0 s eco n d tes t - J it ter applied (2 U I @ 1 0 H z ) r ef dat e A P R 2 2 1 9 9 8 k dh 1 0 0 .0 E - 9 TDEV (sec) 1 0 .0 E - 9 TD EV 1 .0 E - 9 G R 1 2 4 4 - Fig 5 .1 G R 1 2 4 4 - Fig 5 - 3 1 0 0 .0 E - 1 2 1 0 .0 E - 3 1 0 0 .0 E - 3 1 .0 E +0 1 0 .0 E +0 1 0 0 .0 E +0 1 .0 E +3 In t e g r a t io n T im e ( s e c ) DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 2 of 7 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) Fig. 5.0 S amp le M T IE D ata fo r S T M -S 3/M S T M -S 3 1 .0 E - 6 T ypical r es po ns e - 3 0 0 0 s eco nd tes t - J itter applied (2 U I @ 1 0 H z ) r ef date A P R 2 2 1 9 9 8 k dh MTIE (s) 1 0 0 .0 E - 9 MTIE 1 0 .0 E - 9 1 2 4 4 - 5 .2 Ma s k ( A ) 1 2 4 4 - 5 .2 Ma s k ( B) 1 2 4 4 - 5 .6 Ma s k G R2 5 3 - 5 .4 .4 .3 .2 1 .0 E - 9 1 0 0 .0 E - 3 1 .0 E +0 1 0 .0 E +0 1 0 0 .0 E +0 1 .0 E +3 1 0 .0 E +3 O b s e r va tio n Tim e (s ) Fig. 6.0 CURRENT DRAW MSTM-S3-T2NC 0.45 0.4 0.35 CURRENT (A) 0.3 0.25 0.2 0.15 0.1 0.05 0 0 10 20 30 40 50 60 TIME (Sec) DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 3 of 7 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) TABLE 2.0 ABSOLUTE MAXIMUM RATING SYMBOL PARAMETER MINIMUM NOMINAL VCC Power supply voltage (Vcc to GND) -0.5 VIN Input voltage with respect to ground -0.5 TSTG Storage temperature -65.0 Note 1.0: MAXIMUM +7.0 Vcc+.05 +150.0 UNITS Volts Volts Deg. C NOTES 1.0 1.0 1.0 Operation of this device at these or any other conditions beyond those listed under Recommended Operating Conditions is not implied. Exposure to Absolute Maximum Ratings conditions for extended periods of time may affect device reliability. TABLE 3.0 INPUT AND OUTPUT CHARACTERISTICS SYMBOL PARAMETER MINIMUM NOMINAL VIH High level input voltage 2.0 (TLL Compatible) VIL Low level input voltage 0 (TLL Compatible) TIN Input signal transition time CIN Input capacitance VOH High level output voltage 2.4 @ IOH=-8.0 mA, VCC minimum VOL Low level output voltage @ IOH=8.0 mA, VCC maximum THL Clock out transition time high-to-low, 4.0 no load TLH Clock out transition time low-to-high, 4.0 no load TRIP Input 8 KHz reference signal positive 30 pulse width TRIN Input 8 KHz reference signal negative 30 pulse width TOP1 Standard Operating Temperature 0 TABLE 4.0 PARAMETER Frequency Range (SYNC_OUT) Frequency Range (CLK_OUT) Supply Current Timing Reference Inputs Jitter and Phase Tolerance Wander Generation Free-Run Accuracy Holdover Stability Initial Offset Temperature Drift Holdover History Pull-in/ Hold-in Range Lock Time Correction Period TVL Alarm MAXIMUM UNITS VCC V 0.8 V 250 15 nS pF NOTES V 0.4 V nS nS nS nS 70 Deg. C SPECIFICATIONS 19.44 MHz N/C See Fig. 6.0 8 KHz Ref-GR-1244-CORE 4.2-4.4 Ref-GR-1244-CORE 5.3 ±4.6 ppm ±0.37 ppm 0.05 ppm 0.28 ppm 0.04 ppm 30 seconds ±4.6 ppm Minimum <100 secs 125 µS 1=WARNING: Reference nearing operational limit DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 4 of 7 NOTES 5.0 6.0 2.0 3.0 7.0 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) Fig. 7.0 BLOCK DIAGRAM 5 VOLT DC POWER SUPPLY +5Vdc NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK, etc. EX REF 1 GND EX REF 2 GND FREE RUN CLOCK COPY CLK_OUT GND SYNC_OUT SYSTEM CLOCK GND SYSTEM CONTROL AND DATA INPUTS HOLDOVER REF 1 REF 2 FREERUN GND ALARM OUT CNTL A CNTL B PLL TVL LOSS OF REFERENCE MONITOR SECTION Fig 8.0 MSTM-S3 PACKAGE WITH COVER MECHANICAL CHARACTERISTICS MECHANICAL SHOCK 883D 2002 CONDITION B 1500 G’s 0.5 ms. VIBRATION 883D-2007 CONDITION A 0.06” DA or 20 g Peak Acceleration 20 to 2000 Hz 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. DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 5 of 7 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) PIN DESCRIPTIONS Table 5.0 MSTMS3 PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PIN NAME 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. Output. 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 Output. =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 Synchronized output. Ground N/C Ground External Reference #2 Input. (8KHz) Ground Input. External Reference #1 Input. (8KHz) +5 Volt DC Supply NOTES FOR TABLES 1-5 NOTES: 2.0 3.0 4.0 5.0 6.0 7.0 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 frequencies. REF-GR1244-CORE 3.2.1 R3-1. At ‘1’ level indicates unit is within the extreme 10% of its operating range tracking the reference. DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 6 of 7 Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved THE CONNOR-WINFIELD CORP. Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC) DATA SHEET REVISION HISTORY REVISION P00 REVISION DATE 7/18/00 DATA SHEET #: TM020 REVISION #: P00 DATE: 7/18/00 Page 7 of 7 NOTE Preliminary Realease Specifications are subject to change without notice FILENAME: TM020.DOC Copyright 1999,2000 Connor-Winfield all rights reserved