SM3G-025.92M datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Wireless rf/communication> Telecom circuit> SM3G-025.92M

SM3G-025.92M: DescriptionTelecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28; CategoryWireless rf/communication Telecom circuit; File Size1MB，36 Pages; ManufacturerConnor-Winfield; Websitehttp://www.conwin.com/; Environmental Compliance

Download Datasheet Parametric Compare View All

SM3G-025.92M Overview

Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28

SM3G-025.92M Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Connor-Winfield
Parts packaging code	MODULE
package instruction	DIP, DIP28,.8
Contacts	28
Reach Compliance Code	unknown
JESD-30 code	R-XDMA-P28
Number of functions	1
Number of terminals	28
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	UNSPECIFIED
encapsulated code	DIP
Encapsulate equivalent code	DIP28,.8
Package shape	RECTANGULAR
Package form	MICROELECTRONIC ASSEMBLY
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	6.35 mm
Nominal supply voltage	3.3 V
surface mount	NO
Telecom integrated circuit types	TELECOM CIRCUIT
Temperature level	COMMERCIAL
Terminal form	PIN/PEG
Terminal pitch	2.54 mm
Terminal location	DUAL
width	25.4 mm

SM3G-025.92M Preview

SM3G

ULTRA MINIATURE

STRATUM 3 MODULE

2111 Comprehensive Drive

Aurora, Illinois 60505

Phone: 630- 851- 4722

Fax: 630- 851- 5040

www.conwin.com

Application

The SM3G Timing Module is a

complete system clock module for

Stratum 3 timing applications and

conforms to GR-1244-CORE (Issue

2), GR-253-CORE (Issue 3), ITU-T

G.812 (Type 3) and ITU-T G813 (Option

2). Applications include shared port

adapters, data digital cross connects,

ADM’s, DSLAM’s, multiservice platforms,

switches and routers in TDM, SDH and

SONET environments.

The SM3G Timing Module helps

reduce the cost of your design by

minimizing your development time and

maximizing your control of the system

clock with our simplified design.

This product is compliant with all

required ROHS specifications.

Bulletin

Page

Revision

Date

Issued By

Features

•

Small Package Size, 1.45 x 1.0 x

0.25 inches

•

Four Auto Select Input

References, 8 kHz - 77.76 MHz

•

Frequency Qualification and Loss

of Reference detection for each

input

•

Hitless Reference Switching

•

Master/Slave Operation with

Phase Adjustment

•

Manual/Autonomous Operation

•

Bi-Directional SPI Port Control

•

Three CMOS Frequency Outputs

- Output1 from 12.96 - 77.76

MHz, M/S Output @ 8kHz, BITS

@2.048 MHz or 1.544 MHz

•

3.3V operation

•

ROHS Compliant

TM083

1 of 36

11 Feb 10

ENG

General Description

The SM3G timing module provides a clock output that meets or exceeds Stratum 3 specifications given in GR-1244-CORE (Issue

2), GR-253-CORE (Issue 3), ITU-T G.812 (Type 3) and ITU-T G813 (Option 2). The SM3G features four reference inputs that will

auto-detect the following reference frequencies: 8 kHz, 1.544 MHz, 2.048 MHz, 12.96 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84

MHz and 77.76 MHz.

The SM3G timing module can be configured during production to produce an output up to 77.76 MHz. This output is derived from

an onboard VCXO and must be specified when ordering. The BITS output selectable for either 1.544 or 2.048 MHz. The master/slave

output is 8KHz. The user communicates with the SM3G module through a SPI port. The user controls the SM3G operation by writing

to the appropriate registers. The user can also enable or disable SPI operation through a SPI_Enable pin.

The SM3G offers a wide range of options for the system designer. The bandwidth is SPI Port-selectable from 0.025 Hz to 1.6 Hz.

0.098 Hz is the recommended operational bandwidth for SONET Minimum Clock and most Stratum 3 applications. The 8 kHz output

has an adjustable pulse width. The pull-in range is also adjustable to establish the desired reference frequency rejection limits. A

Free Run frequency calibration value can be written to the module to provide a high degree of accuracy in the free run mode. The

reference frequency for any given reference input is automatically detected. A wealth of status information is available through the SPI

Port registers. The user also has a choice between autonomous or full manual control operation.

In manual mode, the user controls the module operating modes Free Run, Hold Over or locked to a specific reference in normal

mode. If the chosen reference is unavailable or disqualified the module automatically enters Hold Over.

In autonomous control mode, operational mode selection occurs automatically based on reference priority and qualification status.

When the active reference becomes disqualified, the module will switch to another qualified reference. If none is available, it will switch

to Holdover. In the revertive mode the module will seek to acquire the highest priority qualified reference. In the non-revertive mode

the module will not return to the previous reference even after it is re-qualified unless there are no other qualified references.

Switching between references is hitless. Likewise, the output frequency slew rate is minimized during any change of operating

mode, including entry into and return from Free Run or Hold Over to protect traffic from transient-induced bit errors.

Reference Status information and the operating mode information is accessed through status registers. The module will set the

Interrupt pin (SPI_INT) low to indicate a status change. An Alarm pin is used to indicate failure of the active reference status.

Free Run operation guarantees an output within 4.6ppm of nominal frequency and Holdover operation guarantees the output

frequency will not change by more than 0.37ppm during the first 24 hours. Frequency accuracy is based on a TCXO for its small size,

low power consumption and outstanding performance over all environmental conditions.

The module operates on 3.3V ± 5% with a typical power draw of less than 500 milliwatts. The module operates over the 0° to 70° C

commercial temperature range.

Functional Block Diagram

Figure 1

TRST

TCK

TDO

TDI

TMS

M/S REF

REF 1 - 4

RESET

MASTER SELECT

T1/E1

SPI_ENBL

SPI_CLK

SPI_IN

SPI_OUT

SPI_INT

Bus Interface

Reference Priority,

Revertivity and Mask

Table

Control

Mode

Reference

Selection

DPLL

APLL

LOS

LOL

HOLD_GOOD

Reference Input Monitor

OCXO

EEPROM

DAC

VCXO

OUTPUT1

M/S_OUT

BITS_CLK

Data Sheet #:

TM083

Page 2

Rev:

Date:

02/11/10

Specifications subject to change without notice

Specifications for Ultra Miniature Stratum 3

Table 1

Parameter

Voltage

Power

Operating Temp Range

Reference Frequency 1, 2, 3, 4

CMOS Output Frequency #1

M/S Output

BITS_Clk

Master/Slave Input Reference

Input Reference Pulse Width

Reference Qualification Time

Input Capacitance (LVCMOS)

Output Drive Levels (LVCMOS)

Free Run Accuracy

Hold Over Accuracy

Dimensions

Specification

3.3V ± 5%

< 500 mW

0° - 70°C

8 kHz - 77.76 MHz (Auto Detected)

12.96 MHz - 77.76 MHz

8 kHz

1.544/2.048 MHz (Selectable)

8 kHz - 77.76 MHz

10 ns Min @ 8 kHz, 5 ns Min @ >8 kHz

10 sec.

10 pF

Source Current: 7 mA, Sink Current: 10 mA

4.6 ppm

0.37 ppm

1.45 x 1.0 x 0.25 inches (36.83 x 25.4 x 6.35 mm)

Pin Description

Table 2

Pin #

I/O

Pin Name

LOS

LOL

M/S Ref

REF1

REF2

REF3

REF4

TDI

TMS

TRST

BITS_CLK

M/S_OUT

OUTPUT1

VPP

VPN

T1/E1

HOLD_GOOD

TDO

TCK

GND

SPI_CLK

SPI_IN

VCC

SPI_ENBL

RESET

SPI_OUT

SPI_INT

MASTER SELECT

Pin Description

Alarm Output - Loss of Active Reference Signal

Alarm Output - Loss of Lock

Master/Slave reference input – 8 kHz to 77.76 MHz auto detected

Reference Input 1 – 8 kHz to 77.76 MHz auto detected

Reference Input 2 – 8 kHz to 77.76 MHz auto detected

Reference Input 3 – 8 kHz to 77.76 MHz auto detected

Reference Input 4 – 8 kHz to 77.76 MHz auto detected

JTAG TDI pin

JTAG TMS pin

JTAG TRST pin

1.544 or 2.048 MHz output selected by pin 16

Master/Slave 8 kHz output

Synchronous Primary Output

Positive Programing Supply Pin. During normal operation, it is

recommended to float this pin.

Negative Programming Supply Pin. During normal operation it is

recommended to float this pin.

BITS_CLK select input – 1.544 MHz, 0=2.048 MHz

Holdover Good Output Flag – 1=Holdover Available

JTAG TDO pin

JTAG TCK pin

Module Ground

SPI Port Clock input

SPI Port Data input

3.3 Vdc VCC Supply Input

SPI Port Enable input – Active Low

Module Reset – Active Low, 10 ms Hold time

SPI Port Data Output

SPI Port Interrupt Output – Active low

Master/Slave select input – 1=Master, 0=Slave

Data Sheet #:

TM083

Page 3

Rev:

Date:

02/11/10

Specifications subject to change without notice

Pin Diagram

Figure 2

LOS

LOL

M/S REF

REF1

REF2

REF3

REF4

TDI

TMS

TRST

BITS_CLK

M/S_OUT

OUTPUT1

VPP

SM3G

MASTER SELECT

SPI_INT

SPI_OUT

RESET

SPI_ENBL

Vcc

SPI_IN

SPI_CLK

GND

TCK

TDO

HOLD_GOOD

T1/E1

VPN

(TOP VIEW)

Table 3

Address

0x00

0x01

0x02

0x03

0x04

0x05

0x06

0x07

0x08

0x09

0x0a

0x0b

0x0c

0x0d

0x0e

Reg Name

Chip_ID_Low

Chip_ID_High

Chip_Revision

Bandwidth

Ctl_Mode

Op_Mode

Max_Pullin_Range

M/S REF_Activity

Ref_Activity

Ref_Pullin_Sts

Ref_Qualified

Ref_Mask

Ref_Available

Ref_Rev_Delay

Phase_Offset

Description

Low byte of chip ID

High byte of chip ID

Chip revision number

Bandwidth Select

Manual or automatic selection of Op_Mode,BITS clock output frequency

indication, and frame/multi-frame sync pulse width mode control

Master Free Run, Locked, or Hold Over mode, or Slave mode

Maximum pull-in range in 0.1 ppm units

Cross Reference activity

Activities of 4 reference inputs

In or out of pull-in range of 4 reference inputs

Qualification status of 4 reference inputs

Availability mask for 4 reference inputs

Availability of 4 reference inputs

Reference reversion delay time, 0 - 255 minutes

Phase offset between M/S REF & M/S Output (for the Slave in M/S operation)

in 250ps resolution

Type

R/W

Data Sheet #:

TM083

Page 4

Rev:

Date:

02/11/10

Specifications subject to change without notice

0x0f

0x10

0x11

0x12

0x13

0x14

0x15

0x16

0x17

0x18

0x19

0x1a

0x1b

0x1c

0x1d

0x1e

0x1f

0x20

0x21

0x22

0x23

0x24

0x25

0x26

0x27

0x30

0x31

0x32

0x33

0x36

0x37

0x38

0x39

Calibration

Fr_Pulse_Width

DPLL_Status

Intr_Event

Intr_Enable

Ref1_Frq_Offset1

Ref2_Frq_Offset2

Ref3_Frq_Offset3

Ref4_Frq_Offset4

Reserved

Ref1_Frq_Priority1

Ref2_Frq_Priority2

Ref3_Frq_Priority3

Ref4_Frq_Priority4

Reserved

FreeRun Priority

History_Policy

History_CMD

HoldOver_Time

Cfgdata

Cfgctr_Lo

Cfgctr_Hi

Chksum

EE_Wrt_Mode

EE_Cmd

EE_Page_Num

EE_FIFO_Port

Local oscillator digital calibration in 0.05 ppm resolution

Frame sync pulse width

Digital Phase Locked Loop status

Interrupt events

Enable individual interrupt events

Ref1 frequency offset in 0.2 ppm resolution

Ref2 frequency offset in 0.2 ppm resolution

Ref3 frequency offset in 0.2 ppm resolution

Ref4 frequency offset in 0.2 ppm resolution

R/W

Ref1 frequency and priority

Ref2 frequency and priority

Ref3 frequency and priority

Ref4 frequency and priority

R/W

Control and Priority for designation of Free Run as a reference

Sets policy for Hold Over history accumulation

Save, restore and flush comands for Hold Over history

Indicates the time since entering Hold Over state

Configuration data write register

Configuration data write counter, low byte

Configuration data write counter, high byte

Configuration data checksum pass/fail indicator

Disables/Enables writing to the external EEPROM

Read/Write command & ready indication register for ext. EEPROM access

Page number for external EEPROM access

Read/Write data for external EEPROM access

R/W

Data Sheet #:

TM083

Page 5

Rev:

Date:

02/11/10

Specifications subject to change without notice

More (Only the first 5 pages are displayed. Please Download Datasheet to view the full content.) >

SM3G-025.92M Related Products

	SM3G-025.92M	SM3G-012.96M	SM3G-019.44M	SM3G-038.88M	SM3G-051.84M	SM3G-077.76M
Description	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28	Telecom Circuit, 1-Func, ROHS COMPLIANT, MODULE-28
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to
Maker	Connor-Winfield	Connor-Winfield	Connor-Winfield	Connor-Winfield	Connor-Winfield	Connor-Winfield
Parts packaging code	MODULE	MODULE	MODULE	MODULE	MODULE	MODULE
package instruction	DIP, DIP28,.8	DIP, DIP28,.8	DIP, DIP28,.8	DIP, DIP28,.8	DIP, DIP28,.8	DIP, DIP28,.8
Contacts	28	28	28	28	28	28
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown
JESD-30 code	R-XDMA-P28	R-XDMA-P28	R-XDMA-P28	R-XDMA-P28	R-XDMA-P28	R-XDMA-P28
Number of functions	1	1	1	1	1	1
Number of terminals	28	28	28	28	28	28
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C
Package body material	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
encapsulated code	DIP	DIP	DIP	DIP	DIP	DIP
Encapsulate equivalent code	DIP28,.8	DIP28,.8	DIP28,.8	DIP28,.8	DIP28,.8	DIP28,.8
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	MICROELECTRONIC ASSEMBLY	MICROELECTRONIC ASSEMBLY	MICROELECTRONIC ASSEMBLY	MICROELECTRONIC ASSEMBLY	MICROELECTRONIC ASSEMBLY	MICROELECTRONIC ASSEMBLY
power supply	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	6.35 mm	6.35 mm	6.35 mm	6.35 mm	6.35 mm	6.35 mm
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	NO	NO	NO	NO	NO	NO
Telecom integrated circuit types	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT	TELECOM CIRCUIT
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	PIN/PEG	PIN/PEG	PIN/PEG	PIN/PEG	PIN/PEG	PIN/PEG
Terminal pitch	2.54 mm	2.54 mm	2.54 mm	2.54 mm	2.54 mm	2.54 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	25.4 mm	25.4 mm	25.4 mm	25.4 mm	25.4 mm	25.4 mm

Recommended Resources

Temperature regulator drying room temperature control circuit three

Triac two-tone dimmer (2)

Human body proximity alarm circuit

STK077G power amplifier circuit diagram

MAX873, 875, 876 typical application circuit diagram a

The most practical basic diagram circuit 44 - negative sequence voltage phase failure protection circuit

CVOImage applies PNG with opaque background: Question to 91program: After I downloaded the CVOImage class you uploaded from eeworld, I found that the PNG image was displayed, but the background of the PNG was white, not transparent. Is this due ...; watersondf Embedded System

Using C6748 and C5509A to drive nRF24L01 for data transmission: [backcolor=white][color=#000000]1. Preface[/color][/backcolor] [backcolor=white][color=#000000] I have made a data transmission between two DSPs, C5509A and C6748, which are transmitted via RF24L01 de...; 灞波儿奔 Microcontroller MCU

I want to know how to handle STM32 reading and writing Flash and interrupts at the same time: I have written programs for two STM32 chips, STM32F107 and STM32F207, but I always feel uncomfortable with the Flash. I just want to say this, and if you happen to see it, and if you happen to have ti...; 混世小天魔 stm32/stm8

Hey guys, what are the main functions of these MOS tubes?: I am learning about power tool circuit design. I saw a circuit board in the battery pack of an electric drill, which contained 12 MOS tubes of the same model . I don’t understand why so many MOS tubes...; lord Power technology

How to design a simple digital voltmeter using PCB: Help!...; biubiupiu PCB Design

ADS simulation of ARM: I bought an LPC2131 ARM board and the following situation always occurs. I use JLink, so I can't burn the code afterwards. I can only re-encode after burning with J-Tag? The burning method I use is de...; fangxiong789 ARM Technology

Shortcut: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Popular Components