Motorola MVME162 Embedded Controller

MVME162  Embedded Controller

Features of the MVME162 include:

25MHz 32-bit Microprocessor: either an MC68LC040 Enhanced 32-bit

Microprocessor with 8KB of cache and MMU, or an optional 25MHz

MC68040 32-bit Microprocessor with 8KB of cache, MMU, and FPU

1MB, 4MB, or 8MB of shared Dynamic Random Access Memory (DRAM)

with programmable parity

512KB of Static Random Access Memory (SRAM) with battery backup

One JEDEC standard 32-pin PLCC EPROM socket (EPROMs may be

shipped separately from the MVME162)

1MB Flash memory: either one Intel 28F008SA (for older boards) or four

Intel 28F020s (for newer boards)

Four 32-bit programmable timers and programmable Watchdog Timer

(MCchip)

Two 32-bit programmable timers and programmable Watchdog Timer

(optional VMEchip2)

8K by 8 Non-Volatile Random Access Memory (NVRAM) and Time of

Day (TOD) clock with battery backup (Thompson MK48T08)

Input/Output– Two serial ports (one EIA-232-D DCE; one EIA-232-D or EIA-530

DCE/DTE) – Serial port controller (Zilog Z85230)– Optional Small Computer Systems Interface (SCSI) bus interface with

32-bit local bus burst Direct Memory Access (DMA) (NCR 53C710

controller)– Optional LAN Ethernet transceiver interface with 32-bit local bus

DMA (Intel 82596CA controller)– Four MVIP IndustryPack interfaces

VMEbus interface (VMEchip2)—non-VMEbus version optional– VMEbus system controller functions– VMEbus interface to local bus (A24/A32. D8/D16/D32

(D8/D16/D32/D64BLT) (BLT = Block Transfer)– Local bus to VMEbus interface (A16/A24/A32. D8/D16/D32)– VMEbus interrupte

VMEbus interrupt handler– Global CSR for interprocessor communications– DMA for fast local memory-VMEbus transfers (A16/A24/A32.

D16/D32[D16/D32/D64BLT])

Switches and Light-Emitting Diodes (LEDs)– Two pushbutton switches (ABORT and RESET)– Eight LEDs (FAIL, STAT, RUN, SCON, LAN, FUSE, SCSI, and VME)

Specifications

Table 1-2. MVME162 Specifications, lists the specifications for an MVME162

without IndustryPacks. The subsequent sections detail cooling requirements

and FCC compliance.

Cooling Requirements

The Motorola MVME162 Embedded Controller is specified, designed, and

tested to operate reliably with an incoming air temperature range from 0° to

55° C (32° to 131° F) with forced air cooling at a velocity typically achievable

by using a 100 CFM axial fan.  Temperature qualification is performed in a

standard Motorola VMEsystem 3000 chassis.  Twenty-five watt load boards

are inserted in two card slots, one on each side, adjacent to the board under

test, to simulate a high power density system configuration.  An assembly of

three axial fans, rated at 100 CFM per fan, is placed directly under the VME

card cage.  The incoming air temperature is measured between the fan

assembly and the card cage, where the incoming airstream first encounters the

controller under test.  Test software is executed as the controller is subjected to

ambient temperature variations.  Case temperatures of critical, high power

density integrated circuits are monitored to ensure component vendors

specifications are not exceeded.

While the exact amount of airflow required for cooling depends on the

ambient air temperature and the type, number, and location of boards and

other heat sources, adequate cooling can usually  be achieved with 10 CFM

and 490 LFM flowing over the controller.  Less airflow is required to cool the

controller in environments having lower maximum ambients.  Under more

favorable thermal conditions, it may be possible to operate the controller

reliably at higher than 55° C with increased airflow.  It is important to note that

there are several factors, in addition to the rated CFM of the air mover, which

determine the actual volume and speed of air flowing over the controller.

Special Considerations for Elevated Temperature Operation

The following information is for users whose applications for the MVME162

may subject it to high temperatures.

The MVME162 uses commercial grade devices.  Therefore, it can operate in an

environment with ambient air temperatures from 0° C to 70° C.  Several factors

influence the ambient temperature seen by components on the MVME162.

Among them are inlet air temperature; air flow characteristics; number, types,

and locations of IndustryPack (IP) modules; power dissipation of adjacent

boards in the system, etc.

A temperature profile of the MVME162-023 was developed in an MVME945

12-slot VME chassis.  This board was loaded with one GreenSpring IP-Dual

P/T module (position a) and three GreenSpring IP-488 modules (positions b,

c, and d).  One twenty-five-watt load board was installed adjacent to each side

of the board under test.  The exit air velocity was approximately 200 LFM

between the MVME162 and the IP-Dual P/T module.  Under these conditions,

a 10° C rise between the inlet and exit air was observed.  At 70° C exit air

temperature (60° C inlet air), the junction temperatures of devices on the

MVME162 were calculated (from the measured case temperatures) and did

not exceed 100° C.

The following are some steps that the user can take to help make elevated

temperature operation possible:

1. Position the MVME162 board in the chassis for maximum airflow over the

component side of the board.

2. Avoid placing boards with high power dissipation adjacent to the

MVME162.

3. Use low-power IP modules only.  The preferred locations for IP modules

are position a (J2 and J3) and position d (J18 and J19).

FCC Compliance

The MVME162 was tested without IndustryPacks in an FCC-compliant chassis

and meets the requirements for Class A equipment.  FCC compliance was

achieved under the following conditions:

1. Shielded cables on all external I/O ports.

2. Cable shields connected to earth ground via metal shell connectors

bonded to a conductive module front panel.

3. Conductive chassis rails connected to earth ground.  This provides the

path for connecting shields to earth ground.

4. Front panel screws properly tightened.

For minimum RF emissions, it is essential that the conditions above be

implemented. Failure to do so could compromise the FCC compliance of the

equipment containing the module

General Description

The MVME162 is a double-high VMEmodule equipped with an MC68LC040

or optional MC68040 microprocessor.  (The MC68040 microprocessor has a

floating-point coprocessor; the MC68LC040 does not.)

The MVME162 has 1MB, 4MB, or 8MB of parity-protected DRAM; 512KB

SRAM (with battery backup); a TOD clock (with battery backup); an optional

LAN Ethernet transceiver interface with DMA, two serial ports (EIA-232-D

and EIA-232-D/EIA-530); six tick timers with watchdog timer(s); optional

SCSI bus interface with DMA; VMEbus interface (local bus to

VMEbus/VMEbus to local bus, with A16/A24/A32. D8/D16/D32 bus widths

and a VMEbus system controller).

Input/Output

Input/Output (I/O) signals are routed through backplane connector P2.  A P2

adapter board or LCP2 adapter board routes the signals and grounds from

connector P2 to an MVME712 series transition module (MVME712-12.

MVME712-13. MVME712A, MVME712AM, or MVME712M).  The transition

module routes the signals to the appropriate configuration headers and

industry-standard connectors.  Refer to the MVME712-12. MVME712-13.

MVME712A, MVME712AM, and MVME712B Transition Modules and LCP2

Adapter Board User’s Manual or the MVME712M Transition Module and P2

Adapter Board User’s Manual for more information

VMEbus Interface

The optional VMEchip2 ASIC is the VMEbus interface for the MVME162.

(This option is a factory build and cannot be added in the field.)  VMEchip2

features include:

Two programmable 32-bit tick timers

A programmable watchdog timer

Programmable map decoders for the master and slave interfaces

A VMEbus to/from local bus DMA controller

A VMEbus to/from local bus non-DMA programmed access interface

A VMEbus interrupter

A VMEbus system controller

A VMEbus interrupt handler

A VMEbus requester

Processor-to-VMEbus transfers can be D8. D16. or D32.  VMEchip2 DMA

transfers to the VMEbus, however, can be D16. D32. D16/BLT, D32/BLT, or

D64/MBLT.

No-VMEbus-Interface Option

If desired, the MVME162 can function as an embedded controller without a

VMEbus interface (i.e., without the optional VMEchip2). Contact your local

Motorola sales office for ordering information.

MCchip

The Memory Controller (MCchip) ASIC provides four 32-bit programmable

tick timers and an interface to the LAN chip, SCSI chip, serial port chip,

BBRAM, PROM/Flash, SRAM, DRAM, reset control, watchdog timers, access

timers, and interrupter logic.

Flash Memory and EPROM

The MVME162 is equipped with 1MB of Flash memory and an EPROM socket

ready for the installation of the EPROM, which may be ordered separately.

Flash memory is either a single device organized in a 1Mbit x 8 configuration

or four devices organized in a 256Kbit x 8 configuration.  The EPROM location

is a standard JEDEC 32-pin PLCC capable of four Mbit densities (128 Kbit x 8;

256 Kbit x 8; 512 Kbit x 8; 1 Mbit x 8) organized as a 512Kbit x 8 device.  A

jumper allows reset code to be fetched either from Flash memory or from the

EPROM.

IndustryPack Modules

Up to four IndustryPack (IP) modules may be installed on the MVME162.  The

interface between the IPs and MVME162 is the IndustryPack Interface

Controller (IPIC) ASIC.  Access to the IPs is provided by four 3M connectors

located behind the MVME162 front panel.

Optional SCSI Interface

An NCR 53C710 coprocessor provides the SCSI interface for the MVME162.

Optional LAN Ethernet Transceiver Interface

An Intel 82596CA controller provides the LAN Ethernet transceiver interface

for the MVME162.

Required Equipment

The following equipment is required to complete an MVME162 system:

System console terminal

Disk drives and controllers

Operating system

MVME712 series transition module (MVME712-12. MVME712-13.

MVME712A, MVME712AM, MVME712B, or MVME712M); P2 Adapter

Board or LCP2 Adapter Board; and cable

MVME162Bug Firmware

The 162Bug package, MVME162BUG, is a powerful evaluation and debugging

tool for systems built around the MVME162 CISC-based microcomputers.

Facilities are available for loading and executing user programs under

complete operator control for system evaluation.  162Bug includes commands

for display and modification of memory, breakpoint and tracing capabilities,

a powerful assembler/disassembler useful for patching programs, and a self