Modem | Motorola MVME712-12, MVME712A/D3, MVME712AM, MVME712B

MODEM

A

General Description

The UDS 2242980 modem installed on the MVME712-13 or MVME712AM module provides full duplex operation over the 2-wire Public Switch Telephone Network (PSTN). The unit operates asynchronously at data rates of 0 to 300, 600, 1200, or 2400 bps, and synchronously at data rates of 1200 and 2400 bps. The modem uses both LSI and surface mount technologies to fit an auto dial 224 modem on just 9.6 square inches of board space.

The modem provides transmit and receive filtering, adaptive equalization, and modulation and demodulation. Dual Tone Multi-Frequency (DTMF) tone encoding is also provided. Circuitry is included to aid you in telephone call progress monitoring for busy tone, reorder, and dial tone detection, and a buffered audio output is also provided.

The modem provides command selection of either pulse or DTMF auto dialing. Also included is automatic answer and automatic speed adjustment to the speed of the originating modem. For applications requiring unattended operation, these features make the 2242980 card an ideal solution. The auto dialing command set is compatible with the popular ÒATÓ command set.

The modem also includes integral diagnostic test features which aid in isolating communication faults to the phone line, the modem, or the data terminal equipment. Tests that may be performed include Analog Loopback, Analog Loopback Self Test, Digital Loopback, Remote Digital Loopback, and Remote Digital Loopback Self Test.

MVME712A/D3A-1

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Motorola MVME712-12, MVME712A/D3, MVME712AM, MVME712B, MVME712-13 user manual Modem

Contents

MVME712A, MVME712AM MVME712A/D3 Restricted Rights Legend Document Title Motorola Publication Number PrefaceRelated Documentation Manual Terminology Page Safety Summary Safety Depends On You This equipment generates, uses, and can radiate radio Page Contents Page List of Figures Collective Reference Features of the MVME712 Family ModulesIntroduction Features of the LCP2 Adapter Board Characteristics SpeciÞcationsSpeciﬁcations MVME712 Family Speciﬁcations Cooling Requirements FCC Compliance General Description Unpacking Instructions MVME712x Module Preparation MVME712-12 Header Locations MVME712x Module Preparation InstallationHardware Preparation LocationsMVME712AFigure 2-3.Header LMVME712AMocationsFigure 2-4.Header DSR Line Pull Up Select Headers J8, J9, J13, J14 DCE DTE Serial Port 2/Modem Port 2 Select J16, J17 OteSerial Port Conﬁguration Modem Port Conﬁguration MVME712B Module Preparation Scsi Termination MVME712B Connector Locations LCP2 Adapter Connector Locations LCP2 Adapter Board Preparation Installation Instructions Installing for Use with Internal Scsi Devices Internal Scsi and Serial Port Connections Installing the MVME712-13 and MVME712AM as a Modem Internal Scsi and Modem Connections MVME712B Installation MVME712B External Scsi Connections Hardware Preparation and Installation Interconnect Signals LCP2 and MVME712 ConnectorsMVME712 Jumpers From Connector P2 Interconnect Signals LCP2 Adapter Connectors J1, J3-J5 Interconnect Signals MVME712xConnectors J1, J3-J5 Interconnect Signals MVME712x Pin Signal Signal Name and Description Number Mnemonic RTS CTS Connector J2 Interconnect Signals LCP2 Adapter Connector J2 Interconnect Signals LCP2 Adapter GND Ground Prfault PrackPrpe Prbsy DTR3 TXD1GND Ground RXD1 GND Ground RTS1 RTS4 GND Ground TRXC4DTR4 CTS4 CTS2 RTS2DCD2 DTR2 Connector J2 Interconnect Signals MVME712-13, MVME712AM Connector J3 Interconnect Signals LCP2 Adapter ConnectorConnector J2 Interconnect Signals MVME712-13/AM Connector J3 Interconnect Signals LCP2 Adapter Termpwr Terminator Power GND Ground DBPGND Ground ATN GND Ground BSY GND Ground REQ Connector Scsi Interface Interconnect Signals MVME712BScsi Interface Interconnect Signals MVME712B GND Ground Termpwr Terminator Power MAU Connector Ethernet Interconnect Signals MVME712BEthernet Interconnect Signals MVME712B Connector J6 Interconnect Signals MVME712-13, MVME712AM Connector J7 Interconnect Signals MVME712-13, MVME712AMConnector J6 Interconnect Signals MVME712-13/AM 10. Connector J7 Interconnect Signals MVME712-13/AM Connector J10 Interconnect Signals MVME712x 11. Connector J10 Interconnect Signals MVME712xMDMRXD2 MDMDCD2 Pin Number Signal Signal Name and Description J11 Mnemonic Connector P2 and J11 Interconnect Signals MVME712x12. Connector P2, J11 Interconnect Signals MVME712x Data bit 6 Printer A16 A23 Connector J12 Interconnect Signals MVME712-13, MVME712AM 13. Connector J12 Interconnect Signals MVME712-13/12AM Connector J15 Interconnect Signals MVME712x 14. Connector J15 Interconnect Signals MVME712x Parts Lists and Locations 15. MVME712 x Module Parts ListModel Parts List Parts Location Drawing Reference Motorola Description Designation Part Number 15. MVME712x Module Parts List Modem kit MVME712-13 and MVME712AM Side MVME7121.-3FigureocationL-12 Parts MVME712-13 Parts Location Drawing Primary Side DrawingFigure 3-3. MVME712A Parts LocationPrimary Side 1532 PartsMVME712AMFigure 3-4.Location Drawing Primary Side CR3 CR4 CR5 CR6 CR7 CR8 CR9 Support Information MVME712A and MVME712AM Reference Motorola Designation MVME712B Parts Location Drawing 17. LCP2 Adapter Module Parts List CR1 MVME712AM LCP2 Schematic DrawingsModule Board Part Number Pages Support Information Modem Features BeneÞts Modem FeaturesTable A-1. Modem Features Characteristic SpeciÞcation Technical SpeciﬁcationsTable A-2. Technical Speciﬁcations TTL/CMOS Table A-3. Autodialer Characteristics Index MVME712AM IN-7