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THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control Timing Modules (MSTM-S3-T2NC)
Fig. 1.0
DESCRIPTION
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.
MSTM-S3 PIN ASSIGNMENT
+5Vdc EX REF 1 GND EX REF 2 GND CLK_OUT GND SYNC_OUT GND
HOLDOVER REF 1 REF2 FREERUN GND ALARM OUT CNTL A CNTL B PLL TVL
BOTTOM VIEW
Fig. 2.0
BLOCK DIAGRAM
CNTL A CNTL B 0 1 2:4 2 3 FREERUN REF 1 REF 2 HOLDOVER PLL TVL FREE RUN HOLDOVER LOCK AND DETECTION
EX REF 1 EX REF 2
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 OPERATIONAL MODE REF 1 REF 2 HLDOVER FREERUN PLL TVL ALARM OUTPUT 1 0 1 1 0 1 1 1
1
0
1
1
Free Run (Default) External Normal Reference #1 Tune Limit LOS+LOL External Normal Reference #2 Tune Limit LOS+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
DATA SHEET #: TM020
REVISION #: P00
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 1 of 7
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 -2 0 0 T im e ( s ) 60 70 80 90 100
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
1 0 .0 E - 9
TDEV (sec)
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
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 2 of 7
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
1 0 0 .0 E - 9
MTIE (s)
1 0 .0 E - 9
MTIE 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 0.3 CURRENT (A) 0.25 0.2 0.15 0.1 0.05 0 0 10 20 30 TIME (Sec) 40 50 60
DATA SHEET #: TM020
REVISION #: P00
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 3 of 7
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
MAXIMUM VCC 0.8 250 15
UNITS V V nS pF V
NOTES
0.4
V nS nS nS nS
70
Deg. C
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
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 S 1=WARNING: Reference nearing operational limit NOTES 5.0
6.0
2.0
3.0
7.0
DATA SHEET #: TM020
REVISION #: P00
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 4 of 7
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
NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK, etc. FREE RUN CLOCK COPY
+5Vdc EX REF 1 GND EX REF 2 GND CLK_OUT GND
HOLDOVER REF 1 REF 2 FREERUN GND ALARM OUT CNTL A CNTL B PLL TVL
SYSTEM CONTROL AND DATA INPUTS
SYSTEM CLOCK
SYNC_OUT GND
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
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 5 of 7
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
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 6 of 7
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 NOTE Preliminary Realease
DATA SHEET #: TM020
REVISION #: P00
Specifications are subject to change without notice FILENAME: TM020.DOC
DATE: 7/18/00
Page 7 of 7
Copyright 1999,2000 Connor-Winfield all rights reserved

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