ABB MVME162 Embedded Controller

ABB MVME162 Embedded Controller

Hardware architecture and features

1. Core processor and architecture

Processor: Adopting a 25MHz 32-bit MC68040 or MC68LC040 microprocessor, the former integrates on-chip instruction and data cache, floating-point processor, while the latter has no floating-point unit.

Bus structure: The local bus is a 32-bit synchronous bus that supports burst transmission and snooping mechanisms. The arbitration priority from high to low is: LAN (82596CA)>SCSI (53C710)>VMEbus>MPU.

2. Memory configuration

DRAM: Supports 1MB, 4MB, or 8MB optional, non interleaved (1MB/8MB) or interleaved (4MB) architecture, with parity check, can trigger interrupt or bus exception in case of error.

SRAM: 512KB with battery backup (powered by Dallas DS1210S), battery life can be maintained for 200 days in the event of a power outage at 40 ° C. The backup power source (VMEbus+5V or onboard battery) needs to be selected through J20 jump pin.

Non volatile storage:

8KB NVRAM (MK48T08) integrates real-time clock, supports BCD format display of hours, minutes, seconds, year, month, and day, and automatically processes leap years.

1MB Flash memory (1 Intel 28F008SA or 4 28F020), can be selected to boot from Flash or EPROM through J22 jump pin.

1 JEDEC standard 32 pin PLCC EPROM socket (supporting 4Mbit density).

3. Interface and Expansion Capability

VMEbus interface: implemented by VMEchip2 ASIC, supporting A24/A32 addresses, D8/D16/D32 data transfer, including DMA controller, interrupt processor, system controller and other functions.

Serial port:

The two ports are driven by the Zilog Z85230 controller and support EIA-232-D (DCE/LTE) or EIA-530 interfaces, configured through the SIM module (SIM05-SIM08).

The baud rate range is 110b/s to 38.4Kb/s, supporting synchronous (SDLC/HDLC) and asynchronous protocols.

Network and Storage:

Ethernet interface: Intel 82596CA controller, supports 32-bit DMA, and each card is assigned a unique MAC address ($08003E2XXXXX).

SCSI interface: NCR 53C710 controller, supporting 32-bit local bus burst DMA, ensuring correct termination at both ends of the bus.

Industry Pack (IP) interface: 4 single size or 2 dual size IP interfaces, controlled by IPIC ASIC, supporting external cable connections.

4. Physical and electrical specifications

Size:

Double height VME board, with a height of 9.187 inches without connectors and a height of 10.309 inches with connectors and front panel, and a thickness of 0.8 inches.

Power Supply:

+5V (± 5%), typical 3.5A, maximum 4.5A;+12Vdc (± 5%) and -12Vdc (± 5%), maximum 100mA.

environment

Working temperature: 0 ° C to 70 ° C (forced air cooling), storage temperature: -40 ° C to+85 ° C, relative humidity: 5% -90% (non condensing).

Installation and configuration process

1. Hardware preparation

Jumping needle configuration:

J1: System controller selection (default enabled, system controller when installing jump pin).

J10: SIM module selection for serial port B (EIA-232-D or EIA-530, DCE/LTE mode).

J20: SRAM backup power selection (VMEbus+5V or onboard battery).

J22: Universal readable jump pin, where GPO3 (pins 9-10) is used to select Flash/EPROM boot mapping.

Safety precautions:

Anti static operation, avoid touching integrated circuits; Disconnect all power sources before installation.

Lithium battery handling: Short circuit, disassembly, and heating are prohibited, and polarity should be noted when replacing.

2. Installation steps

Installation of IP module:

Four IP modules are installed on connectors such as J2/J3, J7/J8, and dual size IP requires adjacent interfaces.

External cables are led out through connectors such as J6 and J5, and users need to provide 50 pin cables themselves.

Installation of VME chassis:

The system controller needs to be installed in slot 1 of the chassis, and non controllers can be installed in any double height slot.

Connect the P1 and P2 connectors to ensure they are securely fastened; Remove the IACK and BG jump pins from the corresponding slots on the chassis backplane.

Transition module connection:

Install MVME712 series transition modules (such as MVME712M, MVME712A) and connect serial ports, SCSI, and Ethernet interfaces through a P2 adapter board.

3. Cable and interface connection

Serial port:

Port 1 (CONSOLE) is connected through a DB-25 connector and defaults to asynchronous mode; Port 2 is configured through the SIM module and transition module.

SCSI and Ethernet:

The SCSI interface is connected through a P2 connector and requires the installation of a terminal resistor; The Ethernet interface is led out through the DB15 connector of the MVME712X transition module.

Debugging Tools and Firmware (162Bug)

1. Firmware Overview

Function: Integrated into Flash/PROM, providing functions such as memory debugging, program loading, hardware diagnostics, etc., supporting system self startup and network startup.

Startup mode:

Board Mode: default startup, displays the "162 Bug>" prompt, supports manual command operation.

System Mode: configured through ENV commands, supports automatic testing and system booting.

2. Core functions and commands

Memory operation:

MD: Displays memory content, supports byte/word/long word formats, and can be disassembled (DI option).