Motorola MVME197LE user manual Printer Interface, Ethernet Interface

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Functional Description

All four serial ports use EIA-232-D drivers and receivers located on the main board, and all the signal lines are routed to the I/O connector. The configuration headers are located on the MVME712X transition board. An external I/O transition board such as the MVME712X should be used to convert the I/O connector pinout to industry-standard connectors.

The interface provided by the PCCchip2 allows the 16-bit CD2401 to appear at

4contiguous addresses; however, accesses to the CD2401 must be 8 or 16 bits. 32-bit accesses are not permitted. Refer to the CD2401 data sheet and to the PCCchip2 chapter in the MVME197LE, MVME197DP, and MVME197SP Single Board Computers Programmer’s Reference Guide for detailed programming information.

The CD2401 supports DMA operations to local memory. Because the CD2401 does not support a retry operation necessary to break VMEbus lock conditions, the CD2401 DMA controllers should not be programmed to access the VMEbus. The hardware does not restrict the CD2401 to onboard DRAM.

Printer Interface

The MVME197LE has a Centronics-compatible printer interface. The printer interface is provided by the PCCchip2. Refer to the PCCchip2 chapter in the MVME197LE, MVME197DP, and MVME197SP Single Board Computers Programmer’s Reference Guide for detailed programming information and for drawings of the printer port interface connections.

Ethernet Interface

The 82596CA is used to implement the Ethernet transceiver interface. The 82596CA accesses local RAM using DMA operations to perform its normal functions. Because the 82596CA has small internal buffers and the VMEbus has an undefined latency period, buffer overrun may occur if the DMA is programmed to access the VMEbus. Therefore, the 82596CA should not be programmed to access the VMEbus.

Every MVME197LE module is assigned an Ethernet Station Address. This address is $08003E2XXXXX, where XXXXX is the unique 5-nibble number assigned to the board (i.e., every MVME197LE has a different value for XXXXX).

The Ethernet Station Address is displayed on a label attached to the VMEbus P2 connector. In addition, the eight bytes including the Ethernet address are stored in the configuration area of the BBRAM, with the two lower bytes of those set to 0. That is, 08003E2XXXXX0000 is stored in the BBRAM. At an address of $FFFC1F2C, the upper four bytes (08003E2X) can be read. At an address of $FFFC1F30, the lower four bytes (XXXX0000) can be read. Refer to

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User’s Manual

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Contents MVME197LE MVME197LE/D2Restricted Rights Legend Preface Document TerminologyBIT Related Documentation Document Title Motorola Publication NumberPage Page Safety Summary Safety Depends on YOU Contents Appendix a List of Figures Xii List of Tables Xiv Introduction General DescriptionFeatures OteMVME197LE Specifications SpecificationsCharacteristics Specifications Cooling Requirements Equipment Required FCC ComplianceSupport Information Unpacking Instructions Hardware PreparationHardware Preparation and Installation VMEbus Connector P1 Switch S1 Configuration SwitchesConfiguration Switch S1 General Information S1-1 to S1-8 OFF -- All Ones Factory Configuration Switch S6 Installation InstructionsConnectors MVME197LE Module Installation System Considerations MVME197LE/D2 Hardware Preparation and Installation Abort Switch S2 Controls and IndicatorsReset Switch S3 Memory Maps Front Panel Indicators DS1-DS6Processor Bus Memory Map Processor Bus Memory Map Address Range Devices Accessed Port Size Local Devices Memory MapDetailed I/O Memory Maps BusSwitch Register Memory Map 100108 110Memory Maps Ecdm CSR Register Memory Map ECDM0 ECDM1 ECDM2 ECDM3 ADDR/REGISTERDcam I2C Base Address = $C0 default Offset Dcam I2C Register Memory MapOperating Instructions VMEchip2 Memory Map Sheet 1 OffsetOperating Instructions Global Access BUS Watchdog Timeout Prescaler Adjust VMEchip2 Memory Map Sheet 2Operating Instructions VMEchip2 Memory Map Sheet 3 Operating Instructions VMEchip2 Memory Map Sheet 4 VMEchip2 Gcsr Base Address = $FFF40100Operating Instructions PCCchip2 Memory Map Printer Fault Interrupt Control Register $FFF42031 Printer SEL Interrupt Control Register $FFF42032Printer PE Interrupt Control Register $FFF42033 Printer Busy Interrupt Control Register $FFF42034Cirrus Logic CD2401 Serial Port Memory Map Cirrus Logic CD2400 Memory Map Offsets Size AccessBase Address Is $FFF45000 Data Bits Address D31 D16 D15 Accesses may be 8-bit or 32-bit, but not 16-bit 11 C710 Scsi Memory Map12. MK48T08 BBRAM, TOD Clock Memory Map Address Range Description Size Bytes14. TOD Clock Memory Map 13. Bbram Configuration Area Memory MapData Bits Address Function 0460 BBRAM, TOD Clock Memory Map000000470476 VMEbus Accesses to the Local Peripheral Bus VMEbus Memory Map01-W3869B03A 5000Software Initialization Local Reset OperationMulti-MPU Programming Considerations User’s Manual Data Bus Structure MVME197LE Functional DescriptionMC88110 MPU Functional Description Bus Data Bus 256 BusSwitch MC88110 Address Data MUX AddressMezzanine Address Bus Memory ArrayFlash Memory Battery Backup RAM and ClockOnboard Dram Interfaces VMEbus InterfaceSerial Port Interface Printer Interface Ethernet InterfaceProgrammable Tick Timers Peripheral ResourcesScsi Interface Scsi TerminationWatchdog Timer Processor Bus TimeoutLocal Peripheral Bus Timeout Interrupt SourcesMVME197LE/D2 Functional Description EIA-232-D Interconnections Pin Signal Signal Name and Description Number Mnemonic Table A-1. EIA-232-D InterconnectionsRing Indicator RI is sent by the modem to User’s Manual Figure A-1. Middle-of-the-Road EIA-232-D Configuration Figure A-2. Minimum EIA-232-D Connection Index NumericsIN-2 IN-3 Index
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