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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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
Fig. 1 MSTM-S3-R PIN ASSIGNMENT
+5Vdc EX REF 1 GND EX FEF 2 GND 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 HOLDOVER REF 1 REF 2 FREERUN GND ALARM OUT CNTL A CNTL B PLL TVL
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 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. 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. In Free 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, loss of Reference, and by a Tune-Limit 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.
CLK_OUT GND SYNC_OUT TRI-STATE
BOTTOM VIEW Fig. 2 BLOCK DIAGRAM
0 CNTL A CNTL B 2:4 1 2 3 FREE RUN REF 1 REF 2 HOLD OVER PLL TVL FREE RUN HOLD OVER ALARM OUT
EX REF 1 EX REF 2
2:1 MUX
PHASE COMPARATOR
LOCK AND DETECTION
2:1 MUX DAC FILTERS DAC STRATUM3 TCXO
SYNC_OUT
TUNING VOLTAGE MONITOR PLL_TVL
FIFO
STRATUM3 TCXO CLK_OUT
MSTM-S3-R
TABLE 1.0
CONTROL INPUTS TRI-STATE 0 A 0 B 0 FREE RUN MODE (DEFAULT) EXTERNAL REFERENCE #1 MODE EXTERNAL REFERENCE #2 MODE NORMAL PLL TUNING VOLTAGE LIMIT LOR + LOL NORMAL PLL TUNING VOLTAGE LIMIT LOR + LOL OPERATIONAL MODE REF 1 0 1 1 1 0 0 0 0 REF2 0 0 0 0 1 1 1 0 INDICATOR PIN OUTPUTS HOLD ALARM FREE RUN PLL_TVL OVER OUTPUT 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 or 1 0 1 1 0 1 1 1
0
1
0
0
0
1
0 1
1 X
1 X
HOLD OVER MODE TRI-STATE MODE
HIGH IMPEDANCE
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 1 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
TABLES OF CONTENTS
TABLE 2.0
SYMBOL V CC V IN TST G PARAMETER Pow er Supply Voltage (V CC to GND) Input voltage w ith respect to ground Storage temperature
ABSOLUTE MAXIMUM RATING
MINIMUM -0.5 -0.5 -65 NOMINAL MAXIMUM +7 V CC + 0.5 +150 UNITS Volts Volts C NOTES 1.0 1.0 1.0
TABLE 3.0
SYM BOL VTH VC C VIH VIL VOH VOL tIN C IN C OU T tH L tLH tR IP tR IN PARAM ETER R e s e t th re s h o ld vo lta g e
INPUT AND OUTPUT CHARACTERISTICS
M INIM UM 4 .2 5 4 .7 5 2 .0 0 .0 2 .4 0 .4 2 5 0 .0 1 5 .0 5 0 .0 4 .0 4 .0 2 5 .0 2 5 .0 5 .0 NOM INAL M AXIM UM 4 .5 5 .2 5 VC C 0 .8 UNITS V V V V V V nS pF pF nS nS nS nS NOTES 2 .0
Su p p ly Vo lta g e H ig h le ve l in p u t vo lta g e (TTL C o m p a tib le ) L o w le ve l in p u t vo lta g e (TTL C o m p a tib le ) H ig h le ve l o u tp u t vo lta g e @ IOH = -8 .0 m A, VC C m in im u m L o w le ve l o u tp u t vo lta g e @ IOH = 8 .0 m A, VC C m a xim u m Tra n s itio n tim e o f in p u t s ig n a l In p u t ca p a cita n ce Ou tp u t ca p a cita n ce Tra n s itio n tim e o f clo ck o u tp u t fro m h ig h to lo w w ith n o lo a d Tra n s itio n tim e o f clo ck o u tp u t fro m lo w to h ig h w ith n o lo a d 8 kH z in p u t re fe re n ce s ig n a l's p o s itive p u ls e w id th 8 kH z in p u t re fe re n ce s ig n a l's n e g a tive p u ls e w id th
TABLE 4.0
PARAMETER Frequency Range Supply Current Timing Reference Inputs Jitter and Phase Tolerance Wander Generation Free Run Accuracy Hold Over Stabilty Initial Offset Temperature Drift Hold Over History Pull-in / Hold-in Range Lock Time Correction Period TVL Alarm
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 2 7
SPECIFICATIONS
NOTES 19.44 MHz 120 mA 8 kHz Ref-GR-1244-CORE 4.2 - 4.4 Ref-GR-1244-CORE 5.3 4.6 ppm 0.37 0.05 0.28 0.04 30 sec. 4.6 ppm Minimum < 100 sec. 125 uS 1 = WARNING : Refernce is nearing operational limit
REV:________ DATE:____________ P02 3/21/01
3.0
4.0
5.0
6.0
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
PIN DESCRIPTION
MSTM-S3 PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 HOLD OVER REF 1 REF 2 FREE RUN Gnd ALARM_OUT CNTL A CNTL B PLL_TVL TRI-STATE SYNC_OUT Gnd CLK_OUT Gnd EX REF 2 Gnd EX REF 1 +5 Vdc -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. -Ouput. =1,If (FREE RUN + HOLD OVER + LOR + LOL + PLL_TVL) . -Mode control input. -Mode control input. -Tuning Voltage Alarm. =1 If CAPTURE RANGE NEAR 10% OF EXTREME (~11ppm). -Tri-state enable = 1. All outputs ae put into a high impedance state. -Syncronized output. -Ground. -Stratum 3 TCXO output. (Non-synchronized). -Ground. -External Reference #2 Input. (8 KHz) -Ground. -Input. External Reference #1 Input. (8 KHz) +5 Volt DC supply.
1.0 2.0 3.0 4.0
NOTES:
NOTES FOR TABLES 1.0 - 4.0
Operation of the 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. Power-on Reset will activate within the stated range Ref- GR1244-CORE 3.2.1 R3-1. 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. A 1 level indicates unit is within the extreme 10% of its operating range tracking the reference (~11ppm). Consult factory for use as a reference quilifier.
5.0 6.0
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 3 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
Fig. 3
1 s Transient Response
1200
1000
800
TIE (ns)
600
400
200
0
-200 0 1 2 3 4 5 Time (sec) 6 7 8 9 10
Fig. 4
P h a s e T ra n s ie n t M T IE fo r M S T M -S 3 -R
1 00 00
10 00
MTIE (ns)
G R-253, F ig . 5-19
1 00
M T IE (n s)
10
1 0 .01
0 .1
1
10
10 0
1 00 0
O b s erv atio n T im e (se c )
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 4 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
Fig. 5
S a m p le W a n d e r G e n e ra tio n (T D E V) fo r M S T M -S 3 -R
100
T D EV (n s) G R 1 24 4 , F i g 5. 1
10
TDEV (ns)
1 0 .1 10000 1000 100 0.1 10 1
In te g ra tio n T im e (s e c .)
Fig. 6
S a m p le C a lib ra te d W a n d e r T ra n s fe r (T D E V) fo r M S T M -S 3 -R
1 00 0 0
10 0 0
TDEV (ns)
100
T D EV (n s) G R 1244, F ig 5.3
10
1 0.01 0.1 1000 10000 1 10 100
In te g ra tio n T im e (S e c .)
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 5 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
Fig. 6
S a m p le W a n d e r G e n e ra tio n (M T IE ) fo r M S T M -S 3 -R
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 i g 5. 1 7
MTIE (ns)
M T I E (n s)
100
10 1000000 100000 10000 1000 0.01 0.1 10 100 1
O b s e rv a tio n T im e (s e c .)
Fig. 7
Power on reset for MSTM-S3-R
VCC
VTH Range
Reset
Normal Operation
Reset
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 6 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.
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 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R)
Fig. 9
Fig. 8 MSTM-S3 PACKAGE WITH COVER
(.762mm)
APPLICATIONS CIRCUIT DIAGRAM BLOCK DIAGRAM
.030
5 VOLT DC POWER SUPPLY
(4.572mm)
.180
.078 .040 "A-A"
(1.98mm) (1.02mm)
(3.81mm)
.150
+5Vdc NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK,etc. FREE RUN CLOCK COPY EX REF 1 GND EX REF 2 GND CLK_OUT GND SYSTEM CLOCK SYNC_OUT TRI-STATE
HOLD OVER REF 1 REF 2 FREE RUN GND ALARM OUT CNTL A CNTL B PLL TVL
DETAIL "A-A"
SYSTEM CONTROL AND DATA INPUTS
.200 TYP (4)
(5.08mm) TYP
(50.08mm) (40.64mm)
18 17 16 15 1 2 3 4 5 6
2.000
1.600
.200 TYP
(5.08mm) TYP
.555
(14.1mm)
PIN 1
(50.08mm)
12 11 10
2.000
14 13
LOSS OF REFERENCE MONITOR SECTION
.200 TYP (16)
(5.08mm) TYP
7 8 9
BOTTOM VIEW
REVISION
P00
REVISION DATE
3/6/01
NOTE
Preliminary Release
P01
3/9/01
Added Reset graph
P02
3/21/01
Added min/max Vcc
PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ OF _______ 7 7 REV:________ DATE:____________ P02 3/21/01
Specifications subject to change without notice.

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