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MSTM-S3-TR Stratum 3 Timing Module
2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com
Application
The Connor-Winfield MSTM-S3-TR Simplified Control Timing Module acts as a complete system clock module for Stratum 3 timing applications in accordance with GR1244, Issue 2 and GR-253, Issue 3. Connor Winfield's Stratum 3 timing modules helps reduce the cost of your design by minimizing your development time and maximizing your control of the system clock with our simplified design.
Features
* 5V Miniature Timing Module * Redundant References * 2 Synchronous Outputs Available From 8 kHz to 77.76MHz * 40 sec., Filtered, Hold Over History * Operational Status Flags
Bulletin Page Revision Date Issued By
TM027 1 of 16 P05 02 DEC 02 MBatts
General Description
The Connor-Winfield Stratum 3 Simplified Control Timing Module acts as a complete system clock module for general Stratum 3 timing applications. The MSTM is designed to replace similar units from TF Systems (TF118B) and Raltron (SY0001B). 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 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) lockedsignal input values and the holdover performance of the MSTM. Free Run ModeFree Run mode operation (A=0, B=0) is a guaranteed output of 4.6 ppm of the nominal frequency. Alarm signals are generated at the Alarm Output during Holdover and Free Run operation. Alarm Signals are also generated by Loss-of-Lock and Loss-of-Reference conditions. 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 0.1 Hz filters effectively attenuate any reference jitter, smooth out phase transients, comply with wander transfer and jitter tolerances.
Functional Block Diagram
Figure 1
1
Free Run Ref #1 Ref #2 Hold Over Free Run PLL_TVL Hold Over
Tuning Voltage Monitor Alarm_Out
CNTL A CNTL B
2 3 4
Holdover FIFO
Ex Ref 1 Ex Ref 2
Ref Control
Phase Build Out Circuit
LOL & LOR
DPLL
DAC
Stratum3 OCXO
Sync_Out
/N
Opt_Out*
Reference Clock
*Only one Opt_Out option is available per module
Function Control Table
Table 1
CNTL A 0 1 CNTL B 0 0 Operational Mode Free Run (Default Mode) External Reference #1 External Reference #2 Normal PLL_Unlock LOR Normal PLL_Unlock LOR Ref 1 0 1 1 0 0 0 0 0 Ref 2 0 0 0 0 1 1 0 0 Hold Over 0 0 0 1 0 0 1 1 Free Run 1 0 0 0 0 0 0 0 PLL Unlock 0 0 1 0 0 1 0 0 Alarm Out 1 0 0 1 0 0 1 1
0 1
1 1
Hold Over
Absolute Maximum Rating
Table 2
Symbol VCC VI Ts Parameter Power Supply Voltage Input Voltage Storage Temperature Minimum -0.5 -0.5 -55 Nominal Maximum 7.0 VCC + 0.5 100 Units Volts Volts deg. C Notes 1.0 1.0 1.0
Data Sheet #: TM027
Page 2 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Recommended Operating Conditions
Table 3
Symbol Vcc VTH VIH VIL tIN CIN VOH VOL tTRANS Parameter Power supply voltage Reset threshold voltage High level input voltage - TTL Low level input voltage - TTL Input signal transition - TTL Input capacitance High level output voltage, IOH = -4.0mA, VCC = min. Low level output voltage, IOL = 12.0 mA, VCC = min. Clock output transition time 2.4 Minimum 4.75 4.25 2.0 0 Nominal 5.00 Maximum 5.25 4.5 VCC 0.8 250 15 5.25 0.4 Units Volts Volts Volts Volts ns pF Volts Volts 2.0 Notes
4.0 30 0 70
ns ns C
tPULSE TOP
8kHz input reference pulse width( positive or negative) Operating temperature
Specifications
Table 4
Parameter Frequency Range (Sync_Out) Frequency Range (Opt_Out) Supply Current Timing Reference Inputs Jitter, Wander and Phase Transient Tolerances Wander Generation Wander Transfer Jitter Generation Jitter Transfer Phase Transients Free Run Accuracy Hold Over Stability Inital Offset Temperature Drift Maximum Hold Over History Pull-in/ Hold-in Range Lock Time DPLL Bandwidth Specifications 8 kHz to 77.76 MHz 8 kHz to 77.76 MHz 250 mA typical, 400 mA during warm-up (Maximum) 8 kHz - 19.44 MHz GR-1244-CORE 4.2-4.4, GR-253-CORE 5.4.4.3.6 GR-1244-CORE 5.3, GR-253-CORE 5.4.4.3.2 GR-1244-CORE 5.4 GR-1244-CORE 5.5, GR-253-CORE 5.6.2.3 GR-1244-CORE 5.5, GR-253-CORE 5.6.2.1 GR-1244-CORE 5.6, GR-253-CORE 5.4.4.3.3 4.6 ppm over TOP 0.37 ppm for initial 24 hrs 0.05 ppm 0.28 ppm 0.04 ppm 40 seconds 13.8 ppm minimum 30 seconds typical < 0.1 Hz 5.0 4.0 3.0 Notes
NOTES: 1.0: Stresses beyond those listed under Absolute Maximum Rating may cause damage to the device. Operation beyond Recommended Conditions is not implied. 2.0: 3.0 Logic is 3.3V CMOS GR-1244-CORE 3.2.1
4.0: 5.0:
Hold Over stability is the cumulative fractional frequency offset as described by GR-1244-CORE, 5.2 Pull-in Range is the maximum frequency deviation from nominal clock rate on the reference inputs to the timing module that can be overcome to pull into synchronization with the reference
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 3 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
Pin Description
Table 5 Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Connection
Hold Over Ref 1 Ref 2 Free Run GND Alarm _Out CNTL A CNTL B PLL_Unlock Tri-State/GND Sync_Out GND Opt_Out GND Ex_Ref_2 GND Ex_Ref_1 Vcc
Description
Indicator output. High output when Hold Over mode is selected by control pins. Indicator output. High output when Ref 1 mode is selected by control pins. Indicator output. High output when Ref 2 mode is selected by control pins. Indicator output. High output when Free Run mode is selected by control pins. Ground Alarm output. High output if module is in Free Run, or Hold Over, or LOR. Mode control input Mode control input Indicates that the PLL is not locked to a reference. 0 = Normal operation, 1= Tri-State. Pin is pulled low internally. Ground pin for normal operation. Primary timing output signal. Signal is sychronized to reference. Ground Secondary output signal. Signal is derived from Sync_Out or from an internal reference clock depending upon the choosen configuration. Ground External Input Reference #2 Ground External Input Reference #1 +5V dc supply
Ordering Information MSTM-S3-TR-(Input Reference Frequency)(Opt_Out Frequency)-(Primary Output)
1= 1.544 MHz 2= 2.048 MHz 8= 8 kHz 9= 19.44 MHz S= Other
Primary Output / N option: 2= 2.048 MHz 8= 8 kHz N= No output S= Other Reference Clock Out option: 6= 16.384 MHz 9= 19.44 MHz
02.048M = 2.048MHz 016.384M = 16.384 MHz 019.44M = 19.44 MHz 032.768M = 32.768 MHz 038.88 M = 38.88 MHz 077.76 M = 77.76 MHz
Example: MSTM-S3-TR-88-038.88M
Data Sheet #: TM027
Page 4 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Typical Application
Figure 2
BITS System Signal
Input Select
Line Card 1
A A B MUX Y CW's STM/MSTM module B MUX Y S CW's SCG 2000/4000
Clock out
S
RCV
Timing Card #N
A A B MUX Y CW's STM/MSTM module MUX B
Line Card N
S CW's SCG 2000/4000 Clock out
Y
S
RCV
System Select
Typical System Test Set-up
Figure 3
G P S or LO R AN T im in g S o u r c e
T h is d e v ic e s u p p lie s s y s te m tim e in f o r m a t io n . It c a n b e th o u g h t o f a s s u p p ly in g " a b s o lu te tim e " r e fe r e n c e in f o r m a t io n
S a m p le M T IE D a t a fo r S T M -S 3 /M S T M - S 3
1 .0 E - 6
10 MHz
M T IE (s
P o s s ib le C h o i c e s In c lu d e S ta n fo r d R e s e a r c h M o d e l: F S 7 0 0 T r u e tim e M o d e l X X X
T y p i c a l r e s p o n s e - 3 0 0 0 s e c o n d t e s t - J it t e r a p p li e d ( 2 U I @ re f d a t e A P R k dh 2 2 1 99 8
1 0 H z)
1 0 0 .0 E - 9
1 0 .0 E - 9
M T IE 1 2 4 4 - 5 .2 M a s k ( A ) 1 2 4 4 - 5 .2 M a s k ( B ) 1 2 4 4 - 5 .6 M a s k G R 2 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 v a t io n T im e ( s )
C o p y ri g h t
1 9 9 8 C o n n o r - W in f i e ld a l l r i g h t s re s e r v e d
T a rg e t S y s te m U n d e r T e s t
E x te r n a l R e fe re n c e In p u t
A r b it r a r y W a v e fo r m G e n e ra to r
D S 1 r a te R Z ( 1 .5 4 4 M H z ) , E 1 r a te R Z o r 8 k H z c lo c k R Z w ith n o is e m o d u la tio n
C lo c k o r B IT S lo g ic le v e l c lo c k in p u t ( T T L , C M O S , e tc .)
S ta n d a r d s C o m p lia n c e D o c u m e n ts M T IE , T D E V , W a n d e r T r a n s f e r , a n d W a n d e r G e n e r a t io n P l o t s OC-12 Line Card OC-48 Line Card OC-3 Line Card DS-1 Line Card Timing Card Timing Card Line Card
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
Noise Modulation Input
T y p i c a l r e s p o n s e - 3 0 0 0 s e c o n d te s t - J itt e r a p p l ie d ( 2 U I @ re f d a te A P R k dh 2 2 1 99 8
10 H z)
10 MHz
1 0 0 .0 E - 9
. . . . ...
1 0 .0 E - 9
TDE V (s e c
T D EV
1 .0 E - 9
G R 1 2 4 4 - F ig 5 . 1 G R 1 2 4 4 - F ig 5 - 3
E x te r n a l R e fe re n c e In p u t
A r b it r a r y W a v e fo r m G e n e ra to r [N o is e S o u rc e ]
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 te g r a t io n
T im e
(s e c )
C o p y r i g h t 1 9 9 8 C o n n o r - W i n f ie l d a ll l rig h t s r e s e r v e d
D S 1 r a te [1 .5 4 4 M H z ] B IT S B ip o la r D S - 1 , O C - 3 , O C - 1 2 e le c tr ic a l o r o p tic a l s ig n a ls 10 MHz T e k tr o n ix S J300E
10 MHz
T im e - s ta m p e d e n s e m b le b a s e d o n a b s o lu te tim e r e fe r e n c e ( 1 0 M H z in p u t) P h a s e E r r o r d a ta o u t p u t
E x te r n a l R e fe re n c e In p u t
HP 53310A M o d u la tio n A n a ly z e r / T im e I n te r v a l A n a ly z e r
W a n d e r A n a ly z e r d a ta ( IE E E - 4 8 8 )
E x te r n a l R e fe re n c e In p u t
T E K T R O N IX S J 3 0 0 E
IE E E - 4 8 8 C o n tr o lle r P la t f o r m f o r s o f tw a r e H P 5 3 3 0 5 A P h a s e A n a ly z e r H P E 1748A S ync M e a s u re m e n t T e k t r o n ix W a n d e r A n a ly z e r
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 5 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
MSTM-S3-TR Typical Current Draw
Figure 4
TYPICAL CURRENT DRAW STS/MSTS-S3-T2
0.45 0.4
CURRENT (A)
0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 10 20 30 40 50 60
TIME (Sec)
Typical Calibrated Wander Transfer TDEV
Figure 5
10000
1000
TDEV (ns)
100
TDEV (ns) GR1244, Fig 5.3
10
1 10000 0.01 1000 0.1 100 10 1
Integration Time (Sec.)
Data Sheet #: TM027
Page 6 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Typical Wander Generation MTIE
Figure 6
1000
G R 1 2 4 4 , F ig 5 .2 (A ) G R 1 2 4 4 , F ig 5 .2 (B ) G R 2 5 3 -5 .4 .4 .3 .2 , F ig 5 .1 7 M T IE (n s )
MTIE (ns)
100
10 0.1 1 10 100 1000 10000 100000 1000000
O b s e r v a tio n T im e (s e c .)
Typical Wander Generation TDEV
Figure 7
100
T D E V (n s) G R 1244, F ig 5.1
10
TDEV (ns)
1 0 .1 1000 10000 0.1 100 10 1
In te g ra tio n T im e (s e c .)
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 7 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
1s Phase Transient TIE
Figure 8
1200
1000
800
TIE (ns)
600
400
200
0
-200 0 1 2 3 4 5 Time (sec) 6 7 8 9 10
Typical Phase Transient MTIE
Figure 9
10000
1000
MTIE (ns)
G R -2 5 3 , F i g . 5 -1 9 , R e q u i r e m e n t M T I E (n s)
100
10
1 0 .0 1 0 .1 1 10 100 1000 O b s e rv a tio n T im e (s e c )
Data Sheet #: TM027
Page 8 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Entry Into Hold Over
Figure 10
10000
1000
MTIE (ns)
100
10
G R -1 2 4 4 O b je c tive , F ig . 5 -8 G R -1 2 4 4 R e q ui re m e nt, F ig . 5 -8 G R -2 5 3 , F ig . 5 -1 9 , R e q uire m e nt T yp ic a l M T IE
1 0 .0 0 1
0 .0 1
0 .1
1 O b s e rv a tio n T im e (s e c o n d s )
10
100
1000
Return from Hold Over
Figure 11
10000
1000
MTIE (ns)
100
G R -1 2 4 4 R e q u ire m e n t , F ig . 5 -7 G R -2 5 3 , F ig . 5 -1 9 , R e q u ire m e n t Ty p ic a l M TIE 10
1 0.001
0.01
0.1
1 O b se r v a ti o n T i m e (se c . )
10
100
1000
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 9 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
MSTM-S3-TR Mode Indicator Delay
Figure 12
Change in Operational Mode
Operational Mode Indicator tm
10msec < tm < 65 usec 2 usec < t < 4.125 msec
m
Data Sheet #: TM027
Page 10 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Loss of Reference Timing Diagram
Figure 13
External Reference Input
Alarm tAon 125 usec < tAon < 250 usec tAoff z 500 msec tAoff
Power on Reset Levels
Figure 14
VCC
VTH Range
Reset
Normal Operation
Reset
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 11 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
Solder Clearance
Figure 15
.020" MAX.
.020"
.030" PIN LAND
ALL SOLDER AND/OR WIRE TAGS SHALL NOT EXTEND MORE THAN .020" BELOW PC BOARD BOTTOM SURFACE
Data Sheet #: TM027
Page 12 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
MECHANICAL OUTLINE:
The mechanical outline of the MSTM-S3-TR is shown in Figure 16. The board space required is 2" x 2". The pins are .040" in diameter and are .150" in length. The unit is spaced off the PCB by .030" shoulders on the pins. Due to the height of the device it is recommended to have heat sensitive devices away where the air flow might not be blocked.
GROUND AND POWER SUPPLY LINES:
Power specifications will vary depending primarily on the temperature range. At wider temperature ranges starting at 0 to 70 deg. C., an ovenized oscillator, OCXO, will be incorporated. The turn-on current for an OCXO requires a peak current of about .4A for about a minute. The steady state current will the vary from 50-150 mA depending on the temperature. It is suggested to plan for the peak current in the power and ground traces pin 18 and pin 5. The other four ground pins 10, 12, 14, and 16 are intended for signal grounds.
PAD ARRAY AND PAD SPACING:
The pins are arranged in a dual-in-line configuration as shown in Figure 17. There is .2" space between the pins in-line and each line is separated by 1.6". See Figures 16 & 17 and Table 6.
POWER SUPPLY REGULATION:
Good power supply regulation is recommended for the MSTM-S3-TR The internal oscillators are regulated to operate from 4.75 - 5.25 volts. Large jumps within this range may still produce varying degrees of wander. If the host system is subject to large voltage jumps due to hot-swapping and the like, it is suggested that there be some form of external regulation such as a DC/DC converter.
PAD CONSTRUCTION:
The recommended pad construction is shown in Figure 17. For the pin diameter of .040" a hole diameter of .055" is suggested for ease of insertion and rework. A pad diameter of .150" is also suggested for support. This leaves a spacing of .050" between the pads which is sufficient for most signal lines to pass through.
SOLDERING RECOMMENDATIONS:
Due to the sensitive nature of this part, hand soldering or wave soldering of the pins is recommended after reflow processes.
SOLDER MASK:
A solder mask is recommended to cover most the top pad to avoid excessive solder underneath the shoulder of the pin to avoid rework damage. See Table 6 and Figure 18.
WASHING RECOMMENDATIONS:
The MSTM-S3-TR is not in a hermetic enclosure. It is recommended that the leads be hand cleaned after soldering. Do not completely immerse the module.
VIA KEEP OUT AREA:
It is recommended that there be no vias or feed throughs underneath the main body of the module between the pins. It is suggested that the traces in this area be kept to a minimum and protected by a layer of solder mask. See Figure 17.
MODULE BAKEOUT:
Do not bakeout the MSTM-S3-TR
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 13 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
Package Dimensions
Figure 16
Characteristic Measurements
Table 6
Characteristic Item
Pad to Pad Spacing Solder pad top O.D. Solder pad top I.D. Solder pad bottom O.D. Solder pad bottom I.D. Solder mask top dia. Solder mask bottom dia. Pin row to row spacing
Measurement (inches)
0.200 0.150 0.055 0.150 0.055 0.070 0.155 1.600
Recommended Footprint Dimensions
Figure 17
Side Assembly View
Figure 18
TOP SIDE SOLDER RESIST (OVER PAD) PCB SIDE VIEW BOTTOM SIDE SOLDER RESIST (UP TO PAD)
Data Sheet #: TM027
Page 14 of 16
Rev: P05
Date: 12 / 02 / 02
(c) Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Revision
P00 P01 P02 P03 P04 P05
Revision Date
7/27/01 8/01/01 8/14/01 4/9/02 4/9/02 12/2/02
Note
Preliminary Release Added POR figure and Tri-state pin Added new input frequency Added Opt_Out information Updated Pin descriptions Corrected Table 1
Data Sheet #: TM027
(c) Copyright 2001 The Connor-Winfield Corp.
Page 15 of 16
Rev: P05
Date: 12 / 02 / 02
All Rights Reserved Specifications subject to change without notice
2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com

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