HP 30242 Manual

3000

Computer Systems

30242

LAN/3000

Link

Local Area Network Interface Controller

(LANIC)

Installation and Service

Manual

r,;;.

HEWLETT

a:~

PACKARD

HEWLETT-PACKARD COMPANY

Roseville Networks Division

8000

Foothills Boulevard

Roseville, California

95678

Update

(Jul~T

1986)

Manual

Part

No.

30242-90001

E0285

Printed

U.S.A

February

1985

NOTICE

The

information

contained

this

document

subject

change

without

notice.

HEWLETT-PACKARD

MAKES

WARRANTY

ANY

KIND

WITH

REGARD

THIS

MATERIAL,

INCLUDING,

BUT

NOT

LIMITED

TO,

THE

IMPLIED

WARRANTIES

MERCHANTABILITY

AND

FITNESS

FOR

PARTICULAR

PURPOSE.

Hewlett-Packard

shall

not

liable

for

errors

contained

herein

for

incidental

consequential

damages

connection

with

the

furnishing,

performance

use

this

material.

This

document

contains

proprietary

information

which

protected

All

rights

are

reserved.

part

this

document

may

be photocopied,

reproduced

translated

another

language

without

the

prior

written

consent

Hewlett-Packard

Company.

1985,

1986

HEWLETT-PACKARD

COMPANY

PRINTING HISTORY

The

Printing

History below identifies

the

Edition

this

Manual

and

any

Updates

that

are

included.

PeriodicallY,

update

packages

are

distributed which

contain

replacement

pages

be merged

into

the

manual,

including

updated

copy of this

Printing

History page. Also,

the

update

may

contain

write-in

instructions.

Each

reprinting

of this

manual

will incorporate all past updates; however, no new

information

will be

added. Thus,

the

reprinted

copy will be identical

content

prior

printings

the

same edition

with

the

user-inserted

update

info~mation.

New editions

this

manual

will

contain

new

information,

as well

as updates.

30242-90001

First Edition

Update

February

1985

...

July 1986

111

SAFETY CONSIDERATIONS ]

SAFETY

SYMBOLS

Instruction

manual

symbol:

the

product

will be

marked

with

this symbol when

necessary for

the

user

refer

the

instruction

manual

in order

protect

the

product against damage.

GENERAL

-This

product

documentation

must

familiarization

with

safety

instructions before operation.

and related

reviewed

for

markings

and

CAUTION

The

CAUTION sign

denotes ahazard.

calls

attention

operating

procedure, practice,

the

like, which, if not correctly

performed

or adhered to,

could result in damage to or

destruction of

part

or all of

the

product. Do

not

proceed

beyond aCAUTION sign

until

the

indica

ted

condibons

are

fully understood and met.

CAUTION]

TIC

SENSITIVE

DEVICES

WARNING,

Indicates hazardous voltages.

Indicates

earth

(ground)

terminal

(sometimes used

manual

to indicate

circuit

common connected

grounded

chassis).

The

WARNING

sign

denotes a

hazard.

calls

attention

aprocedure,

practice,

the

like, which,

not

correctly

performed

adhered to, could

result

injury.

not

proceed

beyond a

",7

ARNING

sign

until

the

indicated conditions

are

fully understood

and

Inet.

When

any

two

materials

make

contact,

their surfaces are crushed

the

atomic

level

and

electrons pass back

and

forth

between

the

objects.

separation, one

surface comes away

with

excess electrons

(negatively charged) while the

other

electron deficient (positively charged). The

level

charge

that

developed depends on

the type

material. Insulators can easily

build

charges

excess

20,000 volts.

Aperson working

abench

walking

across afloor

can

build

acharge of

many thousands

volts.

The

amount

static voltage developed depends

the

rate

generation

the

charge

and

the

capacitance

the

body holding

the

charge.

the

discharge happens to

through

semiconductor device

and

the

transient

current

pulse is

not

effectively diverted by

protection circuitry,

the

resulting

current

flow

through

the

device

can

raise

the

temperature

internal

junctions to

their

melting points. MOS

structures

are

also

susceptible to dielectric damage due

high

fields.

Feb 85

Feb

The

resulting

damage can

range

from

complete

destruction

latent

degradation.

Small geometry semiconductor devices

are

especially susceptible

damage

static

discharge.

The

LANIC

card

is shipped in a

transparent

static

shielding bag.

The

card

should be

kept

this bag

all times

until

installed in the system. Save this bag

for

storing

transporting

the

card. When

installing

the

card

the

system,

not

touch

any

components. Hold

the

card

its

edges.

WAR,NING

SAFETY

EARTH

GROUND

The

computer

on which this

product

installed

is a

safety

class Iproduct

and

provided

with

protective

earthing

terminal. An

uninterruptible

safety ground

must

provided f

rom

the

main source to

the

product

input

wiring terminals, power cord,

supplied power cord set. Whenever

likely

that

the

protection has been

impaired,

before

the

power cord

removed

from

the

wall receptacle,

the

AUI

cable connector

must

be removed

from

the

junction

panel

and

insulated

from

exposed

conductive

surfaces.

WARNING

infrequent

intervals, exposed

metal

surfaces

the

AUI cable

may

be subject

transient

hazardous

voltages due to·

strong

electrical

disturbances

(such as

lightning

disturbances

the

electrical

utilities power grid)

the

area

surrounding

the

network

to which this

product

connected.

These

surfaces

should be handled

with

caution

when

the

AUI

cable

not

connected to aproperly

grounded DP

3000

Computer

System.

SERVICING

WARNING

Any

servicing,

adjustment,

maintenance,

repair

assenlblies

within

the

3000

binet

must

performed

only by

qualified personnel.

WARNING

This product

not

designed

for

attachment

to a

network

serving

area

which

contains

multiple

unconnected

power system

safety

grounds.

Before

installing this product,

verify

that

all

the

power system

safety

grounds

are

securely

interconnected

the

area

served

the

local network.

WARNING

not

connect

this

product

ungrounded·

network

coaxial

cable.

CONTENTS

Section 1

GENERAL

INFORMATION

General

Description

1-1

Equipment

Supplied

System

Interface

1-4

Link

Address 1- 5

Specifications.........................................................................................

Section 2

INSTALLATION

Current

Requirements

2-1

Channel

Address Switch

2-1

Cables

2-3

Installing

the

LANIC 2- 4

Start

2-6

Reshipmen

, , " : 2- 6

Section 3

PRINCIPLES

OPERATION

LAN

Interface

Controller

(LANIC)

3-1

Host to LANIC

Communication

3-1

LANIC MPU

and

Firmware

3-3

Local Communications Controller

Direct

Memory Access 3- 3

Firmware

Download

and

Configuration

Firmware

Download

3-3

Setting Station Address

Queue

Initialization

3-4

Transmit

Operation

3-4

Types

Packets

Transmitted

3-4

Transmit

Buffer

Management.

3-4

Queuing of

Transmit

Buffers :::'

3-4

Transmit

Operation Example

3-4

Receive Operation

3-4

Types

Packets Received

3-4

Receive

Buffer

Management

Queuing of Received Packets

Receiver Blind Spots

Receive Operation Example

Error

Management

,...............................

3- 5

Self-Test

Operation

3-6

System In

terru

pt. .................................... ..................................... 3- 6

Feb 85

vii

CONTENTS (continued)

SINTR

Self-Test

terru

pt. " 3- 6

SINTRI

LANIC

Interrupt.

3-6

Interactive

Command Completion

3-7

Interactive

Comnland Acknowledgement.

3-7

Batch

Command Completion

3-8

Fatal

Error

Response ,.

3-8

LANIC

Resets ,

3-8

Power-On

Reset

3-9

Hard

Reset.

3-9

Soft

Reset

3-9

Z-80

Reset. ,

3-10

Power-Fail

Warn

3-10

Self-Test

-1

Manually

Initiated

Self-Test

3-10

Remotely Initiated Self-Test. 3

-1

Idle Self

-Test

-1

Visual Indicators · , , 3

-10

Attachment

Unit

Interface

(AU!)

3-10

MAU

Power Control Circuit.

3-12

LEDs

3-12

LED Pair '

3-15

LED

Pair

3-16

LED Pair

3-16

through

Nand

*LEDs ,3-

TX, RX, MN, DL, RO,

and

IT LEDs

3-16

Medium

Attachment'Unit

(MAU)

3-18

Receiver ,3-

Transmitter

3-18

Collision Detection

3-18

Jabber

Fault

Detection

3-20

Section 4

MAINTENANCE

Repair Philosophy

4-1

Self-Test

4-1

Appendix A

CONfIGURATION

INFORMATION

Configuration

Dialog

A-I

Feb

viii

_GE_N_E_R_A_L_IN_F_O_R_M_A_T_IO_N

---'I~

This

manual

presents installation

and

service instructions for the HP

30242A

LAN/3000

Link Local Area

Network

Interface

Controller. This section contains general

information

covering

the

30242A

LAN/3000

link

product,

and

includes adescription

and

specifications.

GENERAL

DESCRIPTION

The HP

30242A

LAN/3000

link

implementation of the IEEE

802.2

and

IEEE

802.3

Local Area

Network

(LAN) standards

and

used

HP 3000 computer systems.

The

30242A

allows

the

!:lP

3000

to communicate

with

other

HP 3000s over

IEEE 802.3,

4-inch

baseband Local Area

Network

(LAN).

The IEEE

802.3

Local Area Networks (LANs) consist

three

major elements: acoaxial cable transmission

medium, units

access this medium (Medium

Attachment

Units,

MAUs),

and

controllers.

For

the

HP 30242A,

the

controller

the

Local Area

Network

Interface

Controller

(LANIC).

Afitting, called atap, pierces

the

coaxial cable

and

provides aconnection

from

the

cable

the

Medium

Attachment

Unit

(MAU). An

Attachment

Unit

Interface (AUI) cable connects

the

MAU

to the

LAN

Interface

Controller (LANIC). The LANIC,

addition

controlling

the

other

LAN

elements, functions

the

interface

from

the

Local Area

Network

the

computer system. Atypical Local Area

Network

shown

figure

1-1.

Each host computer system, including LANIC, AUI, tap, and

MAU

called anode

the

Local Area Network. The LANIC, AU

tap,

and

MAU

are

all

part

the

30242A

LAN/3000

link.

The HP

30242A

LAN/3000

link

is available for use

with

the

3000

Series 39, 40,

and

42;

and

the

3000

Series 44, 48 64,

and

68. The LANIC, MAU,

and

AUI cable

are

the

same

for

all

3000

Series;

however, two

different

LANIC cables

are

offered

(see

the

paragraph

"Equipment

Supplied").

The

LAN/3000

link functions

intelligent

Direct

Memory Access (DMA)

channel

which

communicates

with

the

host system via

the

system I/O backplane. Local intelligent control is provided by

amicroprocessor

and

firmware

the

LAN

Interface

Controller

(LANIC).

8-bit

Z-80B

microprocessor (MPU) on

the

LANIC handles all the

LAN/3000-to-host

communication

and

performs

many

link-level

operations independently of

the

host. Atype

82586

Local Communications Controller

(LCC)

the

LANIC performs high-speed serial operations, packet address checking,

network

contention

control, packet formatting,

and

Cyclic Redundancy Check (CRC)

generation

and

checking.

The

LCC

controlled by

the

Z-80B

through

local (card resident) memory.

Feb

1-1

General Information

3000

r--~----i

lANle

AUf

CABLE

AUI

CABLE

JOOO

50-OHM

TERMINATOR

50-OHM

TERMINATOR

AUf

CABLE

""------I

lANle

COAXIAL

CABLE

COAXIAL

CABLE

AUI

CABLE

HP3000

3000

Figure 1-1. Typical Local Area Network (LAN)

Feb

1-2

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