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SYNCHRONOUS EQUIPMENT

MULTI OUTPUT HIGH FREQUENCY HITLESS SWITCHING

- SY05-HF

RALTRON ELECTRONICS CORP.

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!
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10651 N.W.19

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!
!
!

Florida 33172

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!
!
!

U.S.A.

Tel: 305 593-6033

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!
!
!

Fax: 305-594-3973

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!
!
!

e-mail: sales@raltron.com

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!
!
!

Internet: http://www.raltron.com

SY05-HF

Date: May 20, 2002

INTRODUCTION

The SY05-HF is a high frequency clock that has been designed to be use
at high speed Line Interface Cards in telecommunication products mainly
related to STN-n or OC-n.

FEATURES

A high frequency clock intended to be used at line cards for OC3 and OC12 (STM3 and STM12).

Along with SY0001 or SY0010 provides complete timing solution.

Provides very low jitter output signal.

Performs hitless switching between two reference signals.

Supports four timing modes: (1) Free-run, (2) Locked to Reference 1 (3) Locked to Reference 2, and (4) Loop back
timing.

Accepts reference inputs from two clock sources

8KHz~77.76MHz

Provides up to 4 LVPECL outputs and two LVCMOS outputs

up to 777.6 MHz

. (or alternatively 5 LVPECL outputs)

Manual or Automatic selection between operating modes.

Alarm and status signals.

Complies with ITU-T Recommendations G.813, ETSI-ETS 300 462-4 and Bellcore GR-1244-CORE for Stratum 3 and
3E applications.

Small dimensions of 1.80 x 1.80 x 0.429 inch. (Without Metal Cover)

APPLICATION

The SY05-HF high frequency clock can be used in ATM, SDH, PDH, and SONET networks devices. It is designed for
manufacturers of network equipment, especially Access Switches, Core Switches, Cross Connects, Digital Multiplexers-
Exchangers, and SDH/SONET equipment. The SY05-HF is a timing solution for Line Interface Cards.

SYNCHRONOUS EQUIPMENT

MULTI OUTPUT HIGH FREQUENCY HITLESS SWITCHING

- SY05-HF

RALTRON ELECTRONICS CORP.

!
!
!
!

10651 N.W.19

!
!
!
!

Florida 33172

!
!
!
!

U.S.A.

Tel: 305 593-6033

!
!
!
!

Fax: 305-594-3973

!
!
!
!

e-mail: sales@raltron.com

!
!
!
!

Internet: http://www.raltron.com

Figure 1. - The functional block diagram of SY05-HF

DESCRIPTION

The SY05-HF synchronization module is a high frequency PLL that performs hitless switching plus additional features
necessary for timing at high-speed Line Interface Cards. The functional block diagram is shown in figure 1. The SY05-HF
receives two reference signals, usually 19.44MHz and using PLL synthesizer generates a high frequency signal necessary
for transceivers or framers. The PLL that is complemented by high-speed logic that provide processing, switching between
the timing modes, alarm and status messages and etc. A high quality VCXO provides very low jitter at the output. The
additional outputs are provided using a divider.

The module supports two operating modes: AUTO mode is the mode where all switching are done automatically and
MANUAL mode is where unit will switch according to the two external control pins CON1 and CON2.

CON1 CON2

Operational

mode

0 0 Free-run

(Unlocked)

Locked to EX REF 1

Locked to EX REF 2

Locked to TLB REF

The module operates in the following four timing modes: 1) Free-run, 2) Locked to EX REF1, 3) Locked to EX REF2 and 4)
Locked to TBL REF. Free-run it a mode the unit is unlocked to either of the inputs. The accuracy of the output frequencies
in this mode is equal to the accuracy of free running VCXO. Locked to EX REF 1 is the mode where the output of the
module is phase locked to input reference 1. Locked to EX REF 2 is the mode where the output of the module is phase
locked to input reference 2, Locked to TBL REF is the mode where is the output of the module is phase locked to the signal
used in Time Loop-back operation.

MUX,

COUNTERS

CONTROL

LOGIC

PLL

(PD+

LF)

÷
÷
÷
÷

OUT 1

PECL

OUT 3,4

& 5 PECL

STATUS

SIGNALS

CU#1

STATUS

SIGNALS

CU#2

EX REF1

CNT1 CNT2

TLB REF

ALARM &

STATUS

REV/NONREV

VCXO

OUT 2

CMOS

EX REF2

AUTO/MAN

SYNCHRONOUS EQUIPMENT

MULTI OUTPUT HIGH FREQUENCY HITLESS SWITCHING

- SY05-HF

RALTRON ELECTRONICS CORP.

!
!
!
!

10651 N.W.19

!
!
!
!

Florida 33172

!
!
!
!

U.S.A.

Tel: 305 593-6033

!
!
!
!

Fax: 305-594-3973

!
!
!
!

e-mail: sales@raltron.com

!
!
!
!

Internet: http://www.raltron.com

SPECIFICATIONS

General
Specifications

Mechanical

1.82" (D) x 1.82" (W) x 0.518" (H)
1.8" (D) x 1.8" (W) x 0.429" (H)

Metal Box
Module on PCB

Power

Supply

+3.3VDC

Current Supply

200mA max

Operating Temperature

-40°C to 80°C

Humidity

5% to 95% non-condensing

Internal Oscillators

VCXO or SAW

Input Signals

Number of Inputs

Input reference frequency

8KHz~77.76MHz

Signal Level

HCMOS 3.3V / 5V I/O tolerant

Time Reference characteristics

As output of SY0001/SY0010

Number of Outputs

6/5

Output 1

51.84MHz~777.600MHz

Signal type

Low Voltage differential PECL

Duty Cycle @ Output 1

50/50%

Output 2

Buffered Input/Synch Out 1

Signal type

HCMOS 3.3V / 5V I/O tolerant

Low Voltage differential PECL (in cases of
Synch Out 1)

Duty Cycle @ Output 2

50/50%

Output 3

Out 1 Divide by 2

Signal type

Low Voltage differential PECL

Duty Cycle @ Output 3

50/50%

Output 4

Out 1 Divid by 4

Signal type

Low Voltage differential PECL

Duty Cycle @ Output 4

50/50%

Output 5

Out 1 divid by 8

Duty Cycle @ Output 5

Low Voltage differential PECL

Signal Type

50/50%

Output 6

Buffered Input/Synch Out 1
(Complimentary)

Low Voltage differential PECL (in cases of
Synch Out 1 - Complimentary)

Signal type

HCMOS 3.3V / 5V I/O tolerant

Output Signal

Duty Cycle @ Output 6

50/50%

Signal Quality
Performance

Jitter Tolerance

Bellcore: GR-1244-R4-4, ITU-T: G.812

Phase Transient Tolerance

Bellcore: GR-1244-R4-7

Jitter Generation and Transfer

Bellcore: GR-1244-R5-7, ITU-T: G.812

Frequency Output
Performance

Pull-In Range

50ppm

MTIE

Bellcore: GR-1244-R5-5, ITU-T: G.812

TDEV

Bellcore: GR-1244-R5-4, ITU-T: G.812

Jitter @ OUT 1

<1ps RMS

Within the BW 10kHz to 20MHz

Phase Transient MTIE Mask

GR1244 R5-14

Stability Free

run

50ppm

Over operating temperature range

SYNCHRONOUS EQUIPMENT

MULTI OUTPUT HIGH FREQUENCY HITLESS SWITCHING

- SY05-HF

RALTRON ELECTRONICS CORP.

!
!
!
!

10651 N.W.19

!
!
!
!

Florida 33172

!
!
!
!

U.S.A.

Tel: 305 593-6033

!
!
!
!

Fax: 305-594-3973

!
!
!
!

e-mail: sales@raltron.com

!
!
!
!

Internet: http://www.raltron.com

Name Description

Signal

Technology

VH/ DC Voltage

Min Typ

Max

Min

Typ

Max

1 +Vcc

Positive Voltage Supply

----- -----

-----

4.75**

(3.135)

5.0**

(3.3)

5.25**

(3.465)

2 REF1

Reference 1 Freerun Input -> the signal High ("1" logic) FREERUN comes from Clock Unit 1

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

3 REF2

Reference 2 Freerun Input -> the signal High ("1" logic) FREERUN comes from Clock Unit 2

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

4 GND

Ground

----- -----

-----

----

------

OUT 1

Synchronized Output 1 -> the output of the synchronized signal.

LV/PECL Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

6 OUT

Synchronized Complementary Output 1 -> the output of the synchronized signal.

LV/PECL Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

7 ALARM

Alarm signal out -> the output is high when the module is unlocked ("1" logic)

0.25 (0.15)

0.5

(0.3)

4.5

(2.97)

5.0

(3.3)

5.25

(3.465)

HCMOS

(3.3 Tolerable)

-----

0.5**

(0.3)

4.5** (2.97)

----

8 OUT

Buffered reference or synchronized signal Output 2 ->

a buffered external reference Signal (LVCMOS)
or
a buffered synchronized local oscillator signal. (LVPECL)

LV/PECL Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

HCMOS

(3.3 Tolerable)

-----

0.5**

(0.3)

4.5** (2.97)

----

9 OUT

Buffered reference or synchronized complimentary signal Output 6 ->

a buffered external reference Signal (LVCMOS)
or
a buffered synchronized local oscillator signal. (LVPECL- complimentary).

LV/PECL Vcc-1.180

Vcc-1.135

Vcc-

0.975

Vcc-1.085 Vcc-1.025 Vcc-

0.880

10 GND Ground

----- -----

-----

----

------

OUT 3

Divider Output 3 -> the output of the synchronized signal divided by 2;

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

12 OUT

Complementary Divider Output 3 -> the output of the synchronized signal divided by 2

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

OUT 4

Divider Output 4 -> the output of the synchronized signal divided by 4.

LV/PECL Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

14 OUT

Complementary Divider Output 4 -> the output of the synchronized signal divided by 4

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

OUT 5

Divider Output 5 -> the output of the synchronized signal divided by 8;

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

16 OUT

Complementary Divider Output 5 -> the output of the synchronized signal divided by 8;

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

17 GND Ground

----- -----

-----

----

------

18 CNT

Control Input 2 -> the external input for selecting mode of the unit see table.

0.25 **

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

19 CNT

Control Input 1 -> the external input for selecting mode of the unit see table.

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

20 AUTO/MAN

Auto/Manual configuration input -> selection input for operating mode
Man="0" ; Auto = "1"

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

21 REF2

Reference 2 Holdover Input -> the signal High ("1" logic) HOLDOVER comes from Clock Unit
2

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

22 REF1

Reference 1 Holdover Input -> the signal High ("1" logic) HOLDOVER comes from Clock Unit
1

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

23 RV/NRV

Revert / Non revert input-> selection input for revert feature
Revertive-"1" ; Non-Revertive = "0"

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

24 GND Ground

----- -----

-----

----

------

25 REF2

Reference 2 Alarm Input -> the signal High ("1" logic) ALARM OUT comes from Clock Unit 2

0 0

0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

26 REF1

Reference 1 Alarm Input -> the signal High ("1" logic) ALARM OUT comes from Clock Unit 1

0 0

0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

EX REF 2

External Reference 2 Input -> the input signal from reference 2

HCMOS

(3.3 Tolerable)

0 -----

0.5**

(0.3)

4.5**

(2.97)

---- ----

28 REF2

Reference 2 Unlocked Input -> the signal High ("1" logic) PLL UNLOCK comes from Clock
Unit 2

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

EX REF 1

External Reference 1 Input -> the input signal from reference 1

HCMOS

(3.3 Tolerable)

0 -----

0.5**

(0.3)

4.5**

(2.97)

---- ----

30 REF1

Reference 1 Unlocked Input -> the signal High ("1" logic) PLL UNLOCK comes from Clock
Unit 1

0 0.25

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

TLB REF

Time Loop back Reference Input -> the input from time loopback

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

32 TLB

REF

Time Loop back Complementary Input -> the complementary input from time loopback

LV/PECL

Vcc-1.680

Vcc-1.620

Vcc-1.56 Vcc-1.085 Vcc-1.025 Vcc-0.885

TLB OK

Time Loop back OK (nput -> When high ("1" logic) the loop back reference is valid for use

0.25 **

(0.15)

0.5**

(0.3)

4.5**

(2.97)

5.0**

(3.3)

5.25**

(3.465)

34 GND Ground

----- -----

-----

----

------

For other pin-out configurations contact the factory!

Indicates corresponding values to Vcc=5V

ORDERING INFORMATION

Please contact factory with input/output options for P/N assiagnment.

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