Product Overview

Performance Technologies VME161
WAN Communications Processor is a
highly integrated 68060/68EC060 MPU
based VMEbus platform. The VME161
is ideal for serial I/O controller
applications where both high throughput
and protocol processing power is
critical, as in telecommunications
and other data communications
environments.

The base module supports all standard
VMEbus data and operating modes
including the VME64 mode pioneered by
Performance Technologies. Operating in
VME64 mode, the VME161 can burst
data over the VMEbus at rates up to 60
MBytes/sec. This high speed transfer
capability makes the VME161 ideal for
applications that require maximum
VMEbus utilization. The base module
provides many I/O features tightly
coupled to the MPU. These features
include DRAM capacities from eight to
64 Mbytes, a Fast SCSI-2 interface with

DMA support for direct flexible/hard
disk interconnect and dual serial I/O
ports for asynchronous communication
connectivity.

In addition to the standard base module
features, the VME161 provides an
option for further extending the single
VMEbus slot functionality through its
"EPAK" extension interface. This
interface provides for optional plug-in
daughterboards (EPAKs) with selectable
I/O options to meet current or future
needs. Performance Technologies offers
"off-the-shelf" EPAKs which support
Ethernet, high speed synchronous
communications, additional
asynchronous serial I/O, etc. The user
can also engineer a custom design based
upon an available, easy-to-use
prototyping EPAK and supplied interface
documentation.

Microprocessor

The VME161 module is based upon the
Motorola 680xx Microprocessor Family.

PT-VME161
Extensible 68060
WAN Communications Processor

Features

Motorola 68060 50 Mhz
Microprocessor

8, 16, 32 or 64 MBytes
of Shared DRAM

SCSI-2 Single-Ended Interface

Ethernet Interface

Various High-Speed Synchronous
and Asynchronous I/O Options

VME/VME64 Interface

Two 32 Pin JEDEC Sockets
(Byte-Wide Port)

68681 DUART Based Functions

Time of Day Clock

Six Software Timers

Broad Software Support

The VME161 incorporates a thirty-two
bit 68060 MPU with integral memory
management for sophisticated operating
system support, a cache memory
architecture for maximizing processor
execution speed and a FPP for optimum
numerical computation capability.
A variant of the 68060 without memory
management or FPP, the 68EC060 MPU,
is utilized in the VME161E.

Memory

Application requirements for local
memory are supported by a combination
of a DRAM array, two 32 pin JEDEC
standard sockets compatible with byte
wide memory devices and a nonvolatile
1Kbit EEPROM.

The DRAM array utilizes 4 Mbit or
16 Mbit DRAM technology configured as
one or two 32 bit wide banks. Its shared
memory architecture also supports
VMEbus slave access, SCSI interface
direct memory access DMA and optional
EPAK based DMA. Array control logic is
optimized to support 68060/68EC060
4 MPU cache burst fill requests with
3-2-2-2 clock timing. Random MPU
read/write cycles are executed in 120
nsecs without contention. Capacity
options of 4, 8, 16, 32, or 64 MBytes are
available as factory options. Parity
protection is provided on the 16, 32 and
64 MByte models.

The module's JEDEC compatible sockets
support a variety of user supplied byte
wide memory types with capacities up to
512 KBytes per socket. Specific configur-
ations and choice of 28 or 32 pin devices
are implemented via jumper options.
One socket is dedicated to ROM/PROM/
EPROM/Flash EPROM devices, while
the other socket supports SRAM devices
and nonvolatile SRAM, in addition to
ROM/PROM/EPROM/Flash EPROM
devices.

A 1 Kbit EEPROM is provided for
non-volatile storage of specific module
configuration or application parameters.
This memory is accessed in a serial bit
stream fashion via programmable I/O
lines of the 68681 DUART.

Base I/O

The VME161 provides base I/O functions
independent of any I/O capabilities that
may be provided via the addition of an
EPAK module. These functions include

a dual Serial I/O ports and several
timer functions.

A single-ended Narrow/FAST SCSI-2
compatible interface is implemented using
an Emulex FAS216 Fast SCSI processor.
The FAS216 maximizes transfer rates by
sustaining asynchronous data rates of up to
7.0 MBytes/sec, and fast synchronous
transfer rates of up to 10.0 MBytes/sec.
Integral DMA capabilities of the FAS216
provide very efficient SCSI to local DRAM
array data transfers. This architecture yields
a performance oriented SCSI interface in
contrast to alternate implementations that
require direct MPU data handling.
Straightforward, mass terminated
interconnection is supported via the "P2"
VMEbus connector. An onboard regulator
provides active SCSIbus termination to
compensate for voltage drops and always
maintains stable voltage to the terminating
resistors. Jumper configurable termination
power options and a replaceable termpower
fuse are also provided.

The module's two Serial I/O ports are based
on the 68681 DUART supporting full-
duplex asynchronous serial communication
at rates up to 38.4 Kbaud. One port
provides four modem control lines for
general purpose asynchronous connectivity.
The second port is considered a utility port
for software development/debug and
implements a basic transmit and receive
data interface. Both ports utilize RS-232C
compatible line drivers and receivers and
are interconnected via a 14 pin connector
on the module front panel (breakout
cable provided).

Two system integrity timers and five
general purpose timers are available on the
VME161. A local bus timeout monitor
checks for long duration local bus cycles
that could occur by erroneously accessing
nonexistent memory or I/O devices. A
"watchdog" timer function can be utilized
to support operating system software
integrity. The 68681 DUART provides a 16
bit general purpose timer with a 3.6864
MHz time-base which can generate a
periodic vectored interrupt to the MPU. A
second general purpose timer, which is a
function of the ACC ASIC chip, supports
time interval measurements from 200
microseconds to 100 milliseconds. This
results in autovectored MPU interrupts.
Three additional software timers are
provided via an 82C54 timer I.C. Each
timer is 16 bits wide and may be cascaded
to produce a 32 or 48 bit timer.

VMEbus Interface

The VME161 offers a robust, high
performance 32/64 bit VMEbus interface
compatible with the IEEE 1014 VMEbus
Specification. The interface is implemented
via a Single Chip VMEbus logic element,
the SCV64, a 304 pin device.

The SCV64 supports all VMEbus control
and utility functions. A complete System
Controller implementation handles
VMEbus arbitration, IACK daisy chain and
SYSCLK drivers and SYSRESET
generation. System Controller operation is
automatically selected when the module is
installed in VMEbus slot 1. The SVC64
also provides VMEbus Requester,
Interrupter and Interrupt Handler logic and
a unique "Auto-Identification" mode which
dynamically informs operating software of
the specific VMEbus slot in which the
module is installed.

The SCV64 also provides support for BLT
(standard block transfer), MBLT (VME64,
multiplexed block transfer), and all
standard VMEbus data and address
transfers and their related timing. As a
VMEbus master, using the DMA features
of the SCV64, the VME161 can provide
high performance bus bandwidth
capabilities to 60 MBytes/sec in
D64MBLT and A32/A24:D64MBLT/
D32BLT/D16BLT/ D32/D16/D08(E0),
UAT and RMW interfacing. A Location
Monitor and associated message queue
offers excellent support for VMEbus inter-
element (mailbox) communications. An
integral 32 bit DMA controller coordinates
local MPU bus to VMEbus data transfers.
Programmable slave address mapping and
access protection is also provided.

Time Of Day Clock

The time of day clock function is supplied
by a Dallas Semiconductor DS1643
Nonvolatile Timekeeping RAM. This
device features 8184 Bytes of Nonvolatile
SRAM and a Real Time Clock (RTC) with
integrated crystal, power fail control circuit
and a lithium energy source.

Indicators

The VME161 incorporates seven front
panel based indicators (LEDs). A green
"RUN" LED indicates MPU instruction
execution. A red "FAULT" LED is software
programmable for User-defined indication.

Module initiated "VMEbus Access" is
dynamically indicated by a green LED.
Four software programmable green LEDs
are also provided for general purpose use.

Controls

Three front panel based control functions
for user interaction are provided by the
VME161. A "RESET" push-button switch
generates a module master reset upon
activation. An "ABORT" pushbutton
switch generates a non-maskable level
seven interrupt to the MPU. A
Hexadecimal (16 position) rotary switch
can be read by module operating software
for User defined purposes.

"EPAK" Extension

The EPAK electrical interface is an
enhanced extension of the module's MPU

bus. Architected for high performance
applications, it supports either master or
slave EPAK implementations with full
32 bit nonmultiplexed address and data
transfers. Vectored or nonvectored MPU
interrupts and several methods of data
transfer acknowledge (DTACK) gener-
ation are also included.

Physically, an EPAK is a daughterboard
mounted on top of the base VME161
module that maintains single slot VME
compatibility. Approximately 3"x 9"
inches in size, it is positioned to allow
for front panel connections.

The EPAK approach to functional
flexibility is a powerful tool for the
system designer. The ability to customize
the module's I/O capabilities allows for
tailored, cost effective I/O solutions.
System implementations with common

base module architectures and varying
EPAK selections provide for utilization of a
straightforward, consistent operating system
interface model. Similarly, because EPAKs
are compatible with a range of VMEbus
platforms from Performance Technologies,
the system architect can choose which base
module best fits processor and VMEbus
cost performance requirements/goals.

PT-VME161
Software Support

The VME161 is supported in depth by
a wide range of operating system software
options, including VxWorks and O/S-9.
Please contact your sales representative
for details.

EPAK

Interface

2x32

JEDEC

Sockets

Timers

68681

DUART

Emulex

FAS216

SCSI-2

Front

Panel

Facilities

68060/
EC060

50 MHz

MPU

VMEbus "P2"

Connector

(Active Termination)

2 - RS232C

SIO Ports

(Front Panel)

User LEDs

Status LEDs

Hex Switch

Reset P/B

Abort P/B

4/8/16/32

MByte

Shared

DRAM

Single

Chip

VMEbus

Interface

(SCV64)

w/VME64

b
u

12/97
P/N 079A007110

Trademarks: PTbug--Performance Technologies;
OS-9--Microware; VxWorks--Wind River Systems

Specifications subject to change without notice.

Contact PTI's main office for regional sales office information.

Ordering Information

The VME161 is offered with a choice of
MPU type and DRAM array size. Specific
model designations are as follows:

Model Number

MPU Type

DRAM Array

68060-50 MHz

PT-VME161-10492

8 MBytes w/o parity

PT-VME161-10493

16 MBytes w/parity

PT-VME161-10494

32 MBytes w/parity

PT-VME161-10495

64 MBytes w/parity

68EC060-50 MHz

PT-VME161E-10497

8 MBytes w/o parity

PT-VME161E-10498

16 MBytes w/parity

PT-VME161E-10499

32 MBytes w/parity

PT-VME161E-10500

64 MBytes w/parity

Accessories

PT-EPAK/A-10251

EPAK Prototyping Kit

PT-EPAK/D-10252

Quad High Speed Synchro-
nous Serial I/O (RS-232C/
RS-422 with 256KB Local
SRAM)

PT-EPAK/E-10253

High Performance Ethernet
Node (10 Base-T/10 Base 5
with 128KB Local SRAM)

PT-EPAK/F-10254

Quad High Speed Synchro-
nous Serial I/O and High
Performance Ethernet Node
(Features of both EPAK/D
and EPAK/E)

PT-EPAK/G-10255

High Density 16 Port Asyn-
chronous Serial I/O

Specifications

Processor

68060 MPU @50 MHz (PT-VME161) 68EC060 MPU @ 50 MHz (PT-VME161E)

VMEbus Interface
DTB Master:

(DMA) A64:D64MBLT and A32/ A24/ A16:D64MBLT/ D32BLT/D16BLT
A32/A24/ A16:D32/ D16/D8(E0),UAT, RMW

DTB Slave:

A32/A24:D64MBLT/ D32BLT/16BLT/D32/ D16/D8(E0), UAT, RMW

DTB Requester:

R(0)-R(3)(ROR/RWD/ ROBC/ Fair/Demand)

INT Handler:

IH(1)-IH(7)

INT Requester:

IR(1)-IR(7)Full System Controller w/Auto-Program Option

Async Ports

Configured as Data Terminal Equipment (DTE)

Port A:

TXD (BA), RXD(BB), RTS(CA), CTS(CB),
DSR(CC), DTR(CD), SHIELD(AA), GND(AB)

Port B:

TXD(SBA), RXD(SBB)

SCSI

10MBytes/sec "Narrow/ FAST" Single-Ended, TTL, Active Termination Option,
P2 Interconnect

Real Time Clock

Dallas Semiconductor DS1643 w/Battery Backup and 8184 Bytes Nonvolatile SRAM

Power Requirements +5V DC + 5% @ 4.1 A, Typical (w/o EPAK) +12V DC + 5% @ 25 mA, Typical

-12V DC + 5% @ 25 mA Typical

Temperature

0 to 55 Degrees C, Operating Ambient

Humidity

0% to 90%, Non-Condensing

Vibration

Designed To Meet 5-100Hz w/2g Acceleration

Mechanical Shock Designed To Meet 20g for 6ms (half sine)

Physical (Base)
Width:

234mm (9.2 inches) 6U

Depth:

160mm (6.3 inches)

Front Panel:

20.3 mm (.8 inches) 4HP

Comp. Height:

14mm (.55 inches) maximum

Physical (EPAK)
Width:

230mm (9.0 inches)

Depth:

76mm (3.0 inches)

315 Science Parkway � Rochester, NY 14620
Tel: 716 256 0200 �
Fax: 716 256 0792
e-mail: info@pt.com
www.pt.com

Электронный компонент: PT-VME161