C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. NETWORK ELEMENT TIMING GENERATOR PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM DESCRIPTION STRATUM 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R) Fig. 1 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: MSTM-S3-R PIN ASSIGNMENT +5Vdc 18 1 HOLDOVER EX REF 1 17 2 REF 1 GND 16 3 REF 2 EX FEF 2 15 4 FREERUN 14 5 GND CLK_OUT 13 6 ALARM OUT GND 12 7 CNTL A SYNC_OUT 11 8 CNTL B TRI-STATE 10 9 PLL TVL GND 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. BOTTOM VIEW Fig. 2 BLOCK DIAGRAM 0 CNTL A 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. CNTL B 2:4 EX REF 1 EX REF 2 FREE RUN 1 REF 1 2 REF 2 3 PLL TVL FREE RUN HOLD OVER ALARM OUT LOCK AND DETECTION PHASE COMPARATOR 2:1 MUX HOLD OVER 2:1 MUX DAC FILTERS DAC STRATUM3 TCXO TUNING VOLTAGE MONITOR FIFO STRATUM3 TCXO SYNC_OUT CLK_OUT PLL_TVL Control loop filters effectively attenuate any reference jitter and smooth out phase transients. MSTM-S3-R TABLE 1.0 CONTROL INPUTS TRI-STATE 0 OPERATIONAL MODE A B 0 0 REF 1 REF2 0 0 NORMAL PLL TUNING VOLTAGE LIMIT LOR + LOL 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 NORMAL PLL TUNING VOLTAGE LIMIT LOR + LOL 0 0 0 1 1 1 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 0 0 or 1 1 FREE RUN MODE (DEFAULT) EXTERNAL REFERENCE #1 MODE EXTERNAL REFERENCE #2 MODE 0 1 0 0 0 1 0 1 1 HOLD OVER MODE 1 X X TRI-STATE MODE HIGH IMPEDANCE Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ INDICATOR PIN OUTPUTS HOLD ALARM FREE RUN PLL_TVL OVER OUTPUT 0 1 0 1 PAGE______ 1 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. NETWORK ELEMENT TIMING GENERATOR STRATUM 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R) PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM TABLES OF CONTENTS TABLE 2.0 ABSOLUTE MAXIMUM RATING SYMBOL PARAMETER MINIMUM V CC Pow er Supply Voltage (V CC to GND) V IN TST G MAXIMUM UNITS NOTES -0.5 +7 Volts 1.0 Input voltage w ith respect to ground -0.5 V CC + 0.5 Volts 1.0 Storage temperature -65° +150° °C 1.0 M AXIM UM UNITS NOTES 4 .5 V 2 .0 5 .2 5 V 2 .0 VC C V 0 .0 0 .8 V TABLE 3.0 INPUT AND OUTPUT CHARACTERISTICS SYM BOL PARAM ETER VTH R e s e t th re s h o ld vo lta g e 4 .2 5 VC C 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 4 .7 5 VIH VIL VOH VOL M INIM UM tIN Tra n s itio n tim e o f in p u t s ig n a l C IN In p u t ca p a cita n ce C OU T 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 tH L tLH tR IP tR IN NOMINAL TABLE 4.0 NOM INAL 5 .0 2 .4 V 0 .4 V 2 5 0 .0 nS 1 5 .0 pF 5 0 .0 pF 4 .0 nS 4 .0 nS 2 5 .0 nS 2 5 .0 nS SPECIFICATIONS PARAMETER NOTES Frequency Range 19.44 MHz Supply Current 120 mA Timing Reference Inputs 8 kHz Jitter and Phase Tolerance 3.0 Ref-GR-1244-CORE 4.2 - 4.4 Wander Generation Ref-GR-1244-CORE 5.3 Free Run Accuracy ±4.6 ppm Hold Over Stabilty ±0.37 Initial Offset 0.05 Temperature 0.28 Drift 0.04 Hold Over History 30 sec. ±4.6 ppm Minimum Pull-in / Hold-in Range Lock Time 5.0 < 100 sec. Correction Period 125 uS TVL Alarm 1 = WARNING : Refernce is nearing operational limit 6.0 Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ 4.0 PAGE______ 2 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. NETWORK ELEMENT TIMING GENERATOR PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM STRATUM 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R) PIN DESCRIPTION MSTM-S3 PIN # 1 HOLD OVER -Output. High when the control inputs select Holdover. 2 REF 1 -Output. High when the control inputs select EX REF 1. 3 REF 2 -Output. High when the control inputs select EX REF 2. 4 FREE RUN -Output. High when the control input selects Free Run. 5 Gnd -Ground. 6 ALARM_OUT -Ouput. =1,If (FREE RUN + HOLD OVER + LOR + LOL + PLL_TVL) . 7 CNTL A -Mode control input. 8 CNTL B -Mode control input. 9 PLL_TVL -Tuning Voltage Alarm. =1 If CAPTURE RANGE NEAR 10% OF EXTREME (~11ppm). 10 TRI-STATE -Tri-state enable = 1. All outputs ae put into a high impedance state. 11 SYNC_OUT -Syncronized output. 12 Gnd -Ground. 13 CLK_OUT -Stratum 3 TCXO output. (Non-synchronized). 14 Gnd -Ground. 15 EX REF 2 -External Reference #2 Input. (8 KHz) 16 Gnd -Ground. 17 EX REF 1 -Input. External Reference #1 Input. (8 KHz) 18 +5 Vdc +5 Volt DC supply. NOTES FOR TABLES 1.0 - 4.0 NOTES: 1.0 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. 2.0 Power-on Reset will activate within the stated range 3.0 Ref- GR1244-CORE 3.2.1 R3-1. 4.0 Holdover stability is the cumulative fractional frequency offset containing Initial Offset, Temperature, and Drift components as described by Bellcore GR-1244-CORE 5.2. 5.0 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. 6.0 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. Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ 3 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM NETWORK ELEMENT TIMING GENERATOR STRATUM 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R) Fig. 3 1 µ s Transient Response 1200 1000 TIE (ns) 800 600 400 200 0 -200 0 1 2 3 4 5 6 7 8 9 10 Time (sec) 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 MTIE (ns) 10 00 G R-253, F ig . 5-19 M T IE (n s) 1 00 10 1 0 .01 0 .1 1 10 10 0 1 00 0 O b s erv atio n T im e (se c ) Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ 4 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. 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 TDEV (ns) 10 1 10000 1000 100 10 1 0.1 0 .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 TDEV (ns) 10 0 0 100 T D EV (n s) G R 1244, F ig 5.3 10 10000 1000 100 10 1 0.1 0.01 1 In te g ra tio n T im e (S e c .) Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ 5 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. 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 ) MTIE (ns) G R 2 5 3 -5 . 4 .4 . 3 .2 , F i g 5. 1 7 M T I E (n s) 100 1000000 100000 10000 1000 100 10 1 0.1 0.01 10 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 Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ Reset PAGE______ 6 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01 C O N N O R THE CONNOR-WINFIELD CORP. 2111 COMPREHENSIVE DRIVE. IL 60505. W I N F I E L D AURORA, FAX (630) 851-5040. PHONE (630) 851-4722 HTTP://WWW.CONWIN.COM Fig. 8 NETWORK ELEMENT TIMING GENERATOR STRATUM 3 SIMPLIFIED CONTROL TIMING MODULES (MSTM-S3-R) Fig. 9 APPLICATIONS CIRCUIT DIAGRAM BLOCK DIAGRAM MSTM-S3 PACKAGE WITH COVER 5 VOLT DC POWER SUPPLY .030 (.762mm) .078 .180 (4.572mm) .040 (1.98mm) .150 +5Vdc (3.81mm) (1.02mm) NETWORK TIMING REFERENCE INPUT eg. BITS CLOCK,etc. DETAIL "A-A" "A-A" 2.000 .200 TYP (4) (50.08mm) (5.08mm) TYP 1.600 (40.64mm) 2.000 (50.08mm) 18 1 17 2 16 3 15 4 14 5 13 .200 TYP 7 11 (16) 8 10 (5.08mm) TYP 9 GND .555 (14.1mm) FREE RUN CLOCK COPY PIN 1 REF 1 SYSTEM CONTROL AND DATA INPUTS FREE RUN GND CLK_OUT GND SYSTEM CLOCK HOLD OVER REF 2 EX REF 2 GND .200 TYP (5.08mm) TYP 6 12 EX REF 1 ALARM OUT CNTL A SYNC_OUT CNTL B TRI-STATE PLL TVL LOSS OF REFERENCE MONITOR SECTION BOTTOM VIEW REVISION REVISION DATE NOTE P00 3/6/01 Preliminary Release P01 3/9/01 Added Reset graph P02 3/21/01 Added min/max Vcc Specifications subject to change without notice. PRELIMINARY DATA SHEET #: TM022 ____________ PAGE______ 7 OF _______ 7 REV:________ P02 DATE:____________ 3/21/01