Multi-Tech Systems MT3334SMI MT3334SMI Design Considerations

ModemModule Developer’s Guide

MT3334SMI14

MT3334SMI Design Considerations

This section discusses hardware considerations, PC board layout considerations, and Telecom

labeling requirements.

Hardware Considerations

Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations

listed below. Other vendor products may or may not operate satifactorily. Multi-Tech System’ s

recommended vendor products only indicate that the product has been tested in controlled conditions

and were found to perform satisfactorily.

6

5

4

3

2

1

J1

Loaded 4 Pin Modjack

x

x

x

x

C2 220PF/2KV

FB2

FERRITE-600

FERRITE-600

220PF/2KV

C1

FB1

TR600-150

R1

TIP

RING

Figure 1-7. Tip and Ring Ferrite Connections

EMC: Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-

11 cable. 220pF capacitors are also used on T&R to reduce the common mode emissions that may

be present in certain systems. The ferrite and capacitors also aid in reducing the effects of transients

that may be present on the line.

Recommended Ferrite

Manufacturer – Associated Component Technology (ACT)

Part # - YCB-1206

Manufacturer – Murata Erie

Part # - BLM31A601SPT

Recommended Capacitor

Manufacturer – Murata Erie Manufacturer - Ever Grace Electronic Industrials

Part # - GHM3045X7R221K-GC(Surface mnt) Part # - YP221K2EA7PS

Part # - DE0807B221K-KH (Thru-hole device)

Note: The capacitors used on T&R must have a Y2 safety rating.

Telecom: The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section

68.500 subpart F for connector specifications. A self-healing fuse is used in series with line to help

prevent damage to the DAA circuit. This fuse is needed for FCC Part 68 compliance.

Recommended Connector

Manufacturer – Stewart

Part # - 6446S/RP-30

Recommended Fuse

Manufacturer – RayChem

Part # - TR600-150

Note: The fuse is also needed to meet UL1950 3rd edition protection against overvoltage from power

line crosses.

Contents

Main Developers Guide Record of Revisions Trademarks Contents Chapter 1 - Introduction and Description Chapter 2 - AT Commands, S-Registers, and Result Codes Chapter 3 - Class 1 Fax Commands Chapter 4 - Class 2 Fax Commands Page Page Product Description Features MT3334SMI 7 Technical Specifications The ModemModule meets the following specifications: Page MT3334SMI 9 Physical Dimensions Figure 1-2 illustrates the the physical dimensions of the MT3334SMI. .020 .0002 SQUARE [0,51] MAXIMUM COMPONENT HEIGHT SOLDER SIDE Test/Demo Board Specifications MT3334SMI 11 Test/Demo Board Block Diagram Figure 1-4. MT3334SMI Test/Demo Board Block Diagram MT3334SMI Pin-out Figure 1-5. MT3334SMI Pinout Typical Application MT3334SMI Design Considerations Hardware Considerations PC Board Layout Considerations p Z Z Calculating Z for Tip and Ring Traces S w + t MT3334SMI Placement Key: Telecom Labeling Requirements FCC Part 68 Reregistration Industry Canada CS-03 Multiple Listing Page AT Command Summary Page Page Page Page Page Page Page S-Registers Page Result Codes Page Class 1 Fax Command Summary Page Page Page Page Page Table 3-2. Single-Page Class 1 Transmit Example Action by Action by Command Respone Local Modem Remote PC Chapter 3 - Class 1 Fax Commands MT3334SMI 39 Table 3-3. Single-Page Class 1 Answer & Receive Example Action by Action by Command Respone Local Modem Remote PC OK Accepts FCS AT+FRH=3 NO CARRIER Detect loss of Drops carrier carrier ATH0 OK Hangs up Page Page Class 2 Fax Command Implementation Class 2 Fax Commands (EIA SP-2388 August 1990) +FAA FAX Auto Answer Enable +FAXERR T.30 Session Error Report +FBOR Data Bit Order Selection +FCQ Copy Quality Checking +FCR Capability to Receive +FCTCRTY ECM Retry Count +FDCC Fax Capability Parameters +FDCS Current Session Results +FDFFC Data Compression Format Conversion +FDIS Current Session Parameters +FDR Begin or Continue Phase C Receive Data +FDT Begin Phase C Data Transmission +FECM Error Correction Mode Control +FET Transmit Page Punctuation Page Page +FDIS Reports DIS Frame Information +FET Post Page Message Response +FHNG Call Termination with Status +FPTS Receive/Transmit Page Transfer Status For More Information Page Page Basic Procedure Setup Changing the Setup Password Changing the Remote Escape Character Page Page Local Analog Loopback Test (V.54 Loop 3) Computer or Terminal AT&T1 CONNECT UUUUUUUUU UUU Digital Analog Local MultiModem Test procedure Remote Digital Loopback Test (V.54 Loop 2) Test procedure Local Digital Loopback Test (V.54 Loop 2) Test Procedure Page Upgrade Overview Step 1: Identify the Modem Firmware Step 2: Identify the Current Firmware Version Multi-Tech Web Site Multi-Tech BBS Step 3: Download the Upgrade File Multi-Tech Web Site Multi-Tech BBS Step 4: Extract the Upgrade Files Step 5: Clear Your Stored Paramenters Step 6: Use FlashPro to Upgrade Modem Firmware Step 7: Restore Your Parameters Page Appendix A - Regulatory Agency Compliance FCC Regulations for Telephone Line Interconnection Canadian Limitations Notice: FCC FAX Update International Modem Restrictions EMC, Safety and Terminal Directive Compliance European Directives User Guide Statement New Zealand Telecom Warning Notice Appendix B - Multi-Tech Flash Programming Protocol Introduction 1. Programming the Modem 2. Other supported boot code commands 3. Other programming concerns Intel Hex Format Data Record Extended Address Record End of File Record Index A B C D E F G H N O P R S