HP 271308 Technical Reference Manual

HP

271308

EIGHT

-CHANNEL

Technical

MUL TIPLEXER

(MUX)

Reference

Card

Assembly:

Manual

5061-4929

Date

Code:

A-2318

HEWLETT-PACKARD
Roseville

8000

Roseville,

Networks

Foothills

California

Boulevard

COMPANY

Division

95678

Flin-

.:~

HEWLETT

PACKARD

Manual

Part

No.2

Printed

7132-90007

E0385

in

U.S.A

March

1985

PRINTING HISTORY

The

Printing
included. Periodically,
be merged
the

update may contain

Each

reprinting

tion

will
of

the

manual

History below identifies

update

into

the manual, including

write-in

of this

be

added. Thus,

same edition

will

contain

manual

with

new

information,

the

packages

an

instructions. -

will incorporate all past updates; however, no new

the

reprinted

its

user-inserted

as well as updates.

Edition

are

updated copy of this

of

this

Manual

distributed which

contain

Printing

copy will be identical in

update

information.

and

any

Updates

replacement

History page. Also,

content

New

to

prior

editions

that

are

pages

to

informa-

printings

of

this

Edition

First

The

information

contained

HEWLETT-PACKARD

................

in

this

MAKES

March 1985

document

NO

WARRANTY

NOTICE

is

subject to change

OF

without

notice.

ANY KIND WITH

REGARD

TO
THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF

MERCHANTABILITY
Hewlett-Packard
sequential

damages in connection

shall not

AND

be

liable for errors contained

FITNESS

with

the furnishing, performance,

FOR

A PARTICULAR PURPOSE.

herein

or

for

incidental

or

use of this material.

or

con-

This document contains
rights
the

are

prior

reserved.

written

No

consent of

proprietary

part

of this document

Hewlett-Packard

Copyright

(c)

information

Company.

1985

by

HEWLETT

11

which

may

be photocopied

-PACKARD COMPANY

is

protected

by copyright. All

or

reproduced

without

CONTENTS

-------

Section
GENERAL

I

nt

Physical

I
INFORMATION

roduct

ion

Description
Functional
Eguipment
Options
Product

The
Printed
r1anuals

Supplied

Available

and

Product

Circuit

.................................................................

Specifications

SectionII

INSTALLATION

Determining
Firmware
Jumpers

Memory

(EPROM)

...................................................................

Configuration

Signature

lID Channel

Per

ipheral

Extension

Installing

Opt

ional
Start-up
Reshipment

Cable

Brackets 0 ......

..............................................................

Description

....................................................

..........................

Part

Identification

.............................................................

Card

Current

Requirements

..........................................

Installation

Jumper

Analysis

Jumper

...............................................

Interface

Device
the

.............................

Interface

Fabr

MUX

icat

.................

ion

...........

o.

0

...

00

.....

0

.0

.0

00

................

o.

0

...............

'

...............................

0 . 0

..

0 0

..

.. 0 ...

o

••

00'

...

0 0

...............

o

••••

0

0 0

..

0 o

'

................

... 0 ..

••••••••

00

....

o

•••

1

-1
1-1
1-1
1-3
1-3
1-3
1

-3
1-3
1-4
1-4

2-1
2-1

2-3
2-3
2-5
2-5
2-5

02-11

2-11
2-12
2-16
2-16

Section

III

PRINCIPLES

Funct

ional
System
Memory

I/O

Address
Z-80B
Z-80 SIO/2
CTC

(Counter

Interfacing

Memory

Regi

ster

..........

o -

1 ­2 ­3 ­4 - Lower
5 -

6 -

7 -

8 ­9 - Lower

A -

B -

OF

OPERATION

descr

ipt

i on

...........................................

Clocks
Address

Space

...

Space

Microprocessor

(Serial

Timer

to

the

Interface

0

...............................

MIC

Configuration

DMA

B Upper
DMA
Dt1A

Lower

B Conf

Byte

Byte
DMA
DMA
DMA

B I/O

A Upper
A Lower

Port

CPU

lID

Circuit

BIC

Circuit

Byte

of

igura t ion.

of

Trans

Address
Byte
Byte

DMA A Configuration

Byte

DMA

A I/O

Interrupt

of

Trans
Port
Vector

Address

.............

0 .

'0'

.......

Controller)

...........

(MIC)

of

Mem

Addr

Memory

Byt

0 . 0

.... 0 ...

Address

Cnt,

........

of

Memory

of

Mem

Addr

Byt

Cnt,

0

.......

0

...........................

0 . 0 0 0

o

••••••••••••••••••••••••••••

0

... 0 ...............

.... 0 ..

0 . 0 0

Channel B

0

.... 0 .............................

Address

Channel A

0

..........

... 0 ... 0 ..............

......................

..................

0

..... 0 ........

0

0 . 0

............

......

0

.....

0

0

.....

0

...

.....

3-1
3-3
3-3
3-6
3-6

3-6
3-19
3-19
3-24

03-24

3-24
3-24
3-24
3-24

3-2
3-25
3-25
3-25
3-26

3-2
3-26
3-26

111

CONTENTS

(Cont.)

Priority
Wait

Diagnostic

Section

IV

State

Interrupt

Circuits

Hood

PROGRAM1ING

MUX

PROGRAf'tT1ABLE

Transactions

Connect

Capabi

Receive
Receive
Signal
Edi t

Software

Si

Logical

lit

ies

Character
Error

Character

Mode
Bac k space
Line

Deletion

Handshake

Host

ENQ/ACK
Device
Host
ngle

X-ON/X-OFF

X-ON/X-OFF

Text

.............................................................

Termi
End-On-Count Text
Ale r t 1

Mo

de.

Type Ahead and Echoing

Receiving
Read
Host

Transmit

Automatic

Transmitting

Buffer

Prograrrmi

Parity
Break

Detection

Reguest

Flushing
ng

Transparent

Initiated

Character

Output

the

Receiver

in

Transmitted

Length 4-10

Transparent

Handshake Timer
Additional

Error
Quoting
Condi
Speed

Options

Handling

Character

tional

Sense

Output

Mode

Asynchronous Event s

Solicited
Diagnostics
Connect

Read
Write
Read Card

Events

..............................................................

Logical

Device

Device

Data,

Data,

Information,
Subfunctions 0 through
Subfunct

ion
Subfunction
Subfunction

Write

Card

Configuration,

Subfunction

Subfunction

3.

................................................................

1.

Configure

2.

End-On-Cou
Alert

1 Read

Structure

for

for

External

FEATURES

...........................................

Interrupt

Loop

Ack

Back

..................................

.................................................

3-27
3-27
3-28

4-1
4-2

Channel

Reguest

Format

....................................

4-2
4-3

Processing

Conditions

........................................................

............................................

4-3
4-5
4-5
4-5
4-5
4-6

with

Handshake

Handshake

nat

Termination

the

Device

Handshake

ion

.................................................

...........................................

...........................

~

..........

4-6
4-7
4-7
4-8
4-8
4-8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 9

4-9

or

Text

Termination
Processing
Separators

Binary

or

Data

...................................

........................................

Appendage
Binary

..................................

Data

4-10
4-11

4-11
4-12
4-12
4-12

and

or

Received

Transmi

tter

...................................

data

4-12
4-13
4-13

...................................................•......

4-14
4-14

..................•...............................•......

Mode

Option

Separators

Appendage

................................

4-14
4-17
4-17
4-17

......................................................

4-17
4-18
4-18

Channel

Reguest

Definitions

Request Code = 1

Reguest

Code = 2 4-20

Request

Code = 4

.....................................

................................

4-19
4-19

4-20

33 4-20

249 - Read

250. Get Card

254. Get Card
0

........................................................

Data

RAM
Status

Reguest

Status

...................................

....................................

Code = 5 4-22

4-21
4-21
4-21

4-23
4-25

Read
nt

Option

Length

Mode

..........................

,;

...................

4-25
4-26
4-26

IV

5.

Transmi

6.

Backspace

7.

Line

8.

Backspace

9.

Device

10.

Baud

11.

Character

12.

Number

13.

Parity

18.

Character

21.

Host

22.

Host

23.

Device

24.

Host

25.

Host

27.

5i

ngle

28.

Output

31.

Additional

32.

5i

ngle

33.

Card

34.

5et

Control

RTS

and

Card,

WTC

Event Block

Read

Status

Identity

Information
Defaul t MUX
5ubfunction

Read
Write

Device

Device

Read Card I
Write
Cont

rol

Card

Card

ss i on

Mode

................................................

Character

Delete

Character

and

Other

Handshake

............................................

Options

Option

..........................................

Rate

Of

Length

Stop

................................................

Bits

..........................................................

Handshake Timer 4-31

Interrupt

X-ON/X-OFF

X-ON/X-OFF
ENQ/ACK
ENQ/ACK

Text Termi
Separator

tv'Iask

.............................................

Characters

Characters

....................................

Characters
Pacing

Counter

nator

.....................................

to

Echo

CR-LF

................................................

Options

Text Termi

Write

Port

Request

Block

Register

ID

.....................................................

Definitions

nator

Code

..........................................

= 6

.....................................

Description

Request
Configuration

Assignment

Data

Block

Block

Definitions

Definitions

....................................

................................................

Summary

.......................................................

Data

nformat

ion

........................................

Configuration

...........................................................

............................

CONTENTS

0

••••••

0

•••••••••

(Cont.)

4-27
4-27
4-27

4-28
4-28
4-29
4-29
4-30
4-30

_4-31

4-33
4-33
4-33
4-33
4-33
4-33
4-34
4-35
4-35
4-36
4-36
4-37

4~38

4-40
4-42
4-42
4-44
4-44
4-44
4-45
4-45
4-46

Section

V

MAINTENANCE
Section

REPLACEABLE
REPLACEABLE
ORDERING
PARTS

Sect
SCHEMATIC

ion

VI

PARTS
PARTS

INFORMATION

NOT

I N

VI

I

DIAGRAMS

...........................................................

PARTS

LIST

.....................................................

6-1
6-1
6-2

v

INTRODUCTION

This

manual
tenance' replaceable parts,
Eight-Channel
cludes a description

provides general

Multiplexer (MUX). This

with

specifications.

GENERAL INFORMATION

information,

and

schematic diagrams for

installation, principles

chapter

has general

of

operation, programming,

the

Hewlett-'-Packard model

information

about

Ir!~IHI,

main-

27130B

the

MUX,

and

in-

PHYSICAL

The HP
a

printed

manual.

27

circuit

FUNCTIONAL

The

HP

Hewlett-Packard

devices (not including modems).

Figure
(CHANNEL
an
of

Note

Bus
the
transmitted
compatible
controls the flow

1-1

I/O

system consisting

the

I/O

that

(MPB).

I/O

channel

DESCRIPTION

1 30B Eight

-Channel

card, a cable,

DESCRIPTION

27130B

shows a

I/O

cards.)

the

computer

I/O

to

with

EIght-Channel

computer

Hewlett-Packard

is a

Hewlett-Packard

data

to/from

adapter,

peripheral

the

I/O

of

traffic

system

of

an

system CPU

and

an

devices by the

channel,

between

Multiplexer (MUX) card

an

RS-

2 32

-C

connection panel, a cable

Multiplexer provides multiplexed connections between a

and

up

to

eight EIA

computer

standard

I/O

channel,

peripheral devices reaches

I/O

card

and

the

and

thus

I/O

an

memory

such
I/O

the
channel

system using

defining the physical

I/O

channel

communicate

as

the

MUX card.

card,

which

computer. The

a·nd

is

shown in Figure 2

extender

RS-232-C,

CHANNEL

and

adapter,

the

CPU/memory

converts device-specific

the

memory/processor bus.

and

directly along a Memory/Processor

The

I/O

I/O

channel

-1.

RS-423-A,

electrical characteristics

I/O

through

data

adapter

The MUX consists of

kit

and

an

installation

RS-422-A

I/O

and

the

cards.

are

The

MUX

the

I/O

received

data

to a format

(see

Figure

channel,

from

type

MUX.

for

is

one

and

1-1)

HP

The
computer
formats, th us' allowing connections

27130B uses several

of

much

of

the

overhead. This permits a wide range

of

the

Z-80A

to

various·

family

CR

Tterminals,

1-1

of

microprocessor components

of

configurable transmission modes

printing'termina:ls,printer(-and

to

relieve

the

host

and

piotters;

"HP27130B

I/O

CARD

MEMORY/PROCESSOR

I/o

CHANNEL

ADAPTER

I/O

I/O

CARD

I/O

CARD

CHANNEL

BUS

MUX

CARD

I/o

DEVICE

o

o

o

DEVICES

UP

TO

6

Figure 1-1. MUX

In

a Typical

Hewlett-Packard

1-2

I/O

DE.VICE

Computer

System

EQUIPMENT SUPPLIED

The

standard

HP 27130B

Eight-Channel

Multiplexer consists of

the

following items:

HP

27130B

Printed

Seventy

RS-232-C

Extension Cable Kit,

EPROMs,

Installation Manual,

PANEL

The following

Option 019:

Mounting

19-inch

Option

Circuit

centinleter

Card,

Panel (connection box),

Part

Numbers

BRACKET

optional

Bracket,

rack

cabinets.) NOTE: Bracket has

540:

Part

Number

(27.5 inch)

Part

Number

27130-80005

Part

Number

OPTIONS

RS-232-C

Part

Number

5061-4929

RS-232-C

Part

Number

1252-0508

and

27130-90003

panel

mounting

5001-5278

Panel Cable,

28658-60005

27130-80006

Part

AVAILABLE

brackets

(Used

two-panel

are

with

capacity.

Number

available

for

mounting

28658-63001

with

the

HP

RS-232-C

27130B.

panel in HP

Mounting

and

9040A

Option

Mounting
9050A

PRODUCT

The

Up to five digits
The

Product

five digits

Bracket,

computers.)

550:

Bracket,

racked

identify

in

the

AND

and a letter

Printed Circuit

The
on

printed

the

card.

circuit

In

addition

card

Part

Number

Part

Number

92211R

PART

the

product;

Card

supplied
to

the

5001-5279

5001-5280

cabinet.)

IDENT~FICATION

(27130B

with

part

in

the

letter

the

number,

(Used

(Used

this case)

indicates

HP 27130B

the

card

for

mounting

with

are

used

the

revision level of

product

is

further

RS-232-C

HP

9000

computer, series 500, model

to

identify

is

identified by a

identified

panel on HP

Hewlett-Packard

the

product.

part

number

by a

letter

and a four-digit

9030A

products.

marked

1-3

HP

27130B

date

code

(e.g.,

A-230l).
version of
the

electrical characteristics

on

the

5061-4929

A-2301

If

the

manual,

described

list of

the

etched circuit

MUX

card

is:

date

code stamped on

there

are

differences between your

in

manual

Hewlett-Packard

Manuals

The

Installation
name
Package.)
If
(page ii) records
Manual

the

and

The

manual

are

Manual ,supplied

part

number. (Note

name,

is

revised, the publication

the

printed

This designation

on

the

card. The date code (the

of

the

card

the

card

supplements available

Sales

and

Service Offices

with

that

this

part

reprint

on

the

number,

title

dates

page.

and

and

is

placed below

with

components mounted. Thus,

does

not

agree

card

and

at

the

nearest

is

printed

the HP 27130B product,

manual

publication

date

manual

is

changed.

update

is

date

the

part

four

with

the

the

card

described herein. These differences

Hewlett-Packard

at

the

part

of

the

are

printed

In

this

record.

number. The

digits following

the

complete

date

code on the

Sales

back

of

this manual).

and

this

manual

HP

27

132A Technical Reference

on

the

title

manual,

Reprint

the

"Printing History" page

dates

letter

the

and

page

for

identifies

letter)

part

title

page

Service

are

identified

of

each manual.

the

Installation

the

identifi.es

number

ef

this

are

Office

(a

by

SPECIFICA

Table

1-1

lists

the

TIONS

specifications

of

the

2713

OB

MUX.

1-4

FEATURES

*

Eight

*

EIA

*

Simplex,

Table

1-1.

27130B

full-duplex

asynchronous

RS-232-C, RS-422A, RS-423-A,

echoplex,

half-d~plex,

MUX

serial

CCITT

or

full-duplex

Specifications

I/O

ports

V.10 &

V.28

mode

compatible

operation

HP

27130B

* Asynchronous baud

* Programmable
* 1

or 2 stop

*

Parity:

* Break
*

Parity,

* Firmware

*

Optional

*

16-bit

PHYSICAL

Size:

programmable

detection

overrun,

based
device

parallel

CHARACTERISTICS

character

bits

and

self-test

handshakes:

interface

rates

even,

framing

from 110 baud

size

of 7 or 8 bits

odd,

forced

error

host

or

host

controlled

to

I/O

channel

193.04
by
(7.6

mm

16.383

by

6.75

to

19.2K baud

1,

detection

device

(backplane)

long

by

mm

thick

by

0.645

forced

controlled

ENQ/ACK

171.45
inches)

0,

mm

or

wide

none

X-ON/X-oFF,

or

W~ight:

I/O

Device

PO"'ER

Vol

Channel

Interconnects:

REQUIREMENTS

tage

Interconnects:

(typical)

+5

V

+12

V

-12

V

1

.672

0.052

0.075

A
A
A

Current

(2-sigma)

1

.890

0.062

0.085

283.5

grams
80-pin
72-pln

(amperes)

A
A

A

1-5

(0.625
connector,
connector,

Power

(typical)

8.36

0.62

0.90

W

W
W

pound)

J1

J2

Dissipation

(2-sigma)

9.45

0.74

1.02

(watts)

W
W
W

INSTALLATION 1-

~

__________________

INTRODUCTION

This section has

information

for installing

and

checking

the

operation

DETERMINING CURRENT REQUIREMENTS

The MUX
1/0
overload
ments
propriate Technica: Reference Manuals.

FIRMW ARE

circuit

channel. Before installing

the

part

power

of

Table

card

obtains its

supply. The

1-1.

Current

(EPROM)

operating

the

MUX, it

current

requirements

INST

voltages

is

necessary to

requirements

ALLA

TION

from

for

the

determine

of

the

all

other

host

computer

MUX

I/O

of

the

whether

are

listed in

cards

~[KJ

MUX.

power supply

the

added

the

power

can

be found in

through

current

require-

the

the

will

ap-

SOME OF
PRODUCT
STATIC DISCHARGE. REFER TO
CONSIDERATIONS INFORMATION
OF THIS
OR REMOVING OR

The EPROMs
installed properly, and
shipping.

Additionally,
components. These pins also
result in
straightened

are

installed in sockets on

when

installing or removing EPROMs, guard against

intermittent

with

careful

that

operation

use of needle-nose pliers.

MANUAL

they

have

can

I

CAUTION

THE

ARE

become folded between a

of

COMPONENTS USED

SUSCEPTIBLE TO

BEFORE

REPLACING

the

MUX

not

been

either

the

MUX. In most cases,

I

HANDLING

COMPONENTS.

card

as shown in Figure

damaged or loosened

IN

DAMAGE

THE

AT

component

SAFETY

THE

THE

either

either

THIS

BY

FRONT

CARD

2-1.

from

bending

and

bent

or

Be

sure

their

or

breaking

its socket,

twisted pins

that

they

are

sockets during

pins on

which

could

can

be

2-1

HP 2713GB

CPU

BIC

MIC

EPROM

EPROM

JUMPER

SID
CTC

SID

CTC
SID

CTC

SID

Figure

2-1.

Component and Jumper Locations

2-2

JUMPERS

There

are

two

jumpers on the MUX card: a Memory

jumper. The locations of these two jumpers

are

Configuration

shown

in

Figure

2-1.

jumper,

HP

and

a Signature Analysis

27130B

Memory

The Memory
shunt

network.
ferent
tions

kinds

are

listed in Table

Configuration

Configuration

jumper,

Jumper

WI,

is

an

internally-connected,

The jumper configures the two memory sockets

of

EPROMs and static RAMs The pin

diagram

2-1.

16

17

16

15 14 13

:2

.3

Figure

2-2.

4.

Memory

6 7 9

Configuration

12

of

11

(U64

WI

is

10

Jumper

18 pin,

and

dual

U74)

in-line

to

accomodate

shown in Figure 2-2;

package (DIP)

dif-

pin

func-

HP

27130B

table

2-1.

functions of the memory configuration

jumper

JUMPER

A

B

C

D

E

Installed

U64.

Position
Circuit
U64.

the

This

lower

Installed
socket
pin

the
in

U64.
1B
BK-byte

socket

whenever

Installed
U64.
the

Position

4K-byte

Installed
socket
bus

to

U64.
pin

Installed
socket

(VPP-)

U74.
of

only

(MIC)

enables

16K
only

(CE-)

U64.

the

only

only

24 (A13)
only
the

FUNCTION

when a 16K
A

connects

to

pin

the

bytes

of

when a 4K-

byte
OCE2-

20 (CE-)

EPROM
memory

or
Position B connects
of

the

EPROM,

This

lower

when
C

connects

4K-byte

depending

enables

BK

bytes

a 4K-byte

EPROM

of

+5V

EPROM.

when

a 16K-byte

Position D connects

of

the

16K-byte

when

an

BK-byte

Position E connects

BK-EPROM.

EPROM

of

the

of

the

in

socket

are

addressed.

BK-byte

OCEO-

or

on. which

the

EPROM

memory

EPROM
power

EPROM

A13

EPROM.

EPROM

+5V

is

used

Memory

EPROM

U64

EPROM

of

pin

EPROM

in

are

is

used

to

pin

is

used

of

the

is

used

power

in

socket

Interface

in

socket

whenever

is

used

the

MIC

20

(CE-)

is

installed

socket

addressed.

in

socket

24

(VDD)

in

address

in

to

pin

in

to

of
U64

of

27

F

G

H

J

Installed
POSition
static

Installed
Position
static

Installed
RAM

is

CPU

address

byte

RAM,

Installed
(access

only
F

RAM,

only

G

RAM,

only

used

depending

to

time

when
connects
thus

enabling

when a
connects
thus

enabling

when a 4K­in

socket

bus

to

enable
greater

an

BK-byte

WR-

2K-byte

WR-

U74.

pin

23 (A11)

on which

the

MIC

than

2-4

of

the

of

the
or

static

the

Z-BOB

CPU
static

the

Z-B08

CPU

8K-byte

to

to

RAM
CPU

write
RAM

CPU

write
EPROM

Position H connects

of

the

4K-

device

wait-state

250

nsec)

is

signal

are

is

used

to

pin

to

the

is

used

to

pin

to

the

or

an

or

BK-byte

installed

when

used

in

in

socket

27

(WE-)

RAM.

in

socket

21

(WE-)

RAM.

BK-byte

A11

of

in

socket

slow

U64

or

of

of

static

the

Z-BOB

EPROM

EPROMs

U74.

U74.

the

U74.

the

or
U74.

BK

HP

27130B

Signature

The

Signature

nections

1/0

of

this

CHANNEL

Analysis

Analysis

jumper

jumper,

are

Figure

INTERFACE

Jumper

U 34,

set

at

the

2-

3.

Signature

is a 14-pin,

factory

14

and

13

12

Analysis

pre-programmed

are

shown in

11

10

4 5 7

1umper

Figure 2-3

9 8

Internal

shunt

network.

for

Connections

The

internal

informatIOn only.

con-

All
tor

in

Table

interface

(J

1)

between

located

2-2.

on

the

the

MUX

MUX

mates

PERIPHERAL DEVICE

Interface
an

RS-232-C

peripheral

Connector
are
Ground
of

Send

to

the

shown

(SG) lines,

Data

eight

between

Connection

devices. A

J2

pin

assignments

in

Table

lines

peripheral

the

MUX

connection

2-4.

and

eight

and

one

devices.

card

Unit,

are

Note

pairs of Receive

pair

and

the

host

with a receptacle

INTERF

and

up to

and

from

there,

diagram

shown

that,

of

Receive

in

Table

for

in

Table 2-3.

Data

computer

ACE

eight

peripheral

via

the

RS-

2-4,

there

Data

(RD)

lines

occurs

on

the

eight

2 3

2C

Pin

and

for

on

the

1/0

channel.

devices

separate

panel

is

assignments

are

eight

Signal

each

of

the

I/O

channel.

Connections

is

via a

connectors

shown

pairs

Ground

in

for

12

of Send

(SG)

eight

An

72-

pin

and

eight

Figure

and

2 -

the

Data

lines;

connectors

80-pin

to

11

are

connector

cables,

4.

RS-

232C

(SO)

and

that

is,

(JO

through

connec-

listed

(J2)

to

the

panel

Signal

one

pair

J7)

to

2-5

HP

27130B

f>,fJX

RECEIVER

R$-232-C

PANEL

ONE

OF

CHANNELS

AX

EIGHT

St-kYWN

RDXlA.)

RDX(S)

oeD)'

DTRX

50-PiN

FEMALE

CONNECTOR

CABLE

J2

___

sox

SGX

CRX3

SHIELD

CRX2

25-PlN

FEMAlE

SO

(103~

DSR(1071

OCD

(109)

DTR

(108.2)

RD

(104)

SG

(102)

AT5

(105)

CTS

(105)

FG

(101)

CONNECTOR

Figure

2-4.

Connections From

2-6

MUX-to-Panel-to-Device

HP

27130B

PIN

NO.

A1
A2
A3
A4
AS
A6
A7
AS
A9
A10
A11
A12
A13
A14

A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
A37
A38
A39
A40

SIGNAL

MNEMONIC

RES
DB14­DB12­GND
DB10­DB8­GND
DB6­DB4­GND
DB2­DBO­GND
AD2­ADO­GND
DDUT­BPO­CEND­SYNC­GND
CCLK
GND

BR-

DBYT­MYAD­GND

RES
PFW­PPON
GND
AC­AC+

-12
+12
+5S
+5P

Table 2-2.

I/O

Channel

SIGNAL

Not

used
Data Bus,
Data Bus,

Connector

DEFINITION

Bit

Bit
Ground
Data Bus,
Data

Bus,

Bit

Bi
Ground
Data Bus,
Data Bus,

Bit

Bit
Ground
Data Bus,
Data Bus,

Bi

Bit
Ground
Address

Bus,

Address Bus,

Ground

Data

Out

Bus

Primitive

Channel

End

Synchronize

Ground

Common

Clock
Ground
Burst

Request

Device Byte

My

Address

Ground

Not

used

Not

used

Not

used
used

Not
Power-Fail
Primary

Power
Ground
Not

used

Not

used

-12V
+12V

Not

used

+5P

14
12

10

8

t

6

4

t 2

0

Bi

t

Bi

t

Bit

Warning

On

J 1

2
0

0

2-7

HP

27130B

Table

2-2.

I/O

Channel

Connector

11

(Continued)

I

I

I

I
I

I

I

I

I

I

I

i

i

I

I

PIN

NO.

B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
B37
B38
B39
B40

SIGNAL

MNEMONIC

---

DB15­DB13­GND
DB11­DB9­GND
DB7­DB5­GND
DB3­DB1­GND
AD3­AD1­GND
UAD­BP1­CBYT­POLL­GND

IOSB­GND
ARQ­DEND-

IFC­GND

---

---

RES

ISPU
NMI­SPON
GND
AC­AC+

-12
+12
+5S
+5P

I

I

I

I

SIGNAL

Not
Data Bus,
Data Bus,

DEFINITION

used

Bi

Bi t 13

15

t

Ground
Data Bus,
Data Bus,

Bi t 11

9

Bi

t

Ground

Bi

t

Bi

7
5

t

Data Bus,
Data Bus,
Ground
Data Bus,
Data Bus,

Bi t 3
Bi

t 1
Ground
Address

Address Bus,

Bus,

Bi

Bi

t 3

t 1
Ground
Unary Address
Bus

Primitive

Channel Byte

Bi t 1

I

Poll
Ground

I/O

Strobe

I

I

Ground
Attention
Device

Interface

i

Ground

used

Not

used

Not

used

Not
Not

used

Non-Maskable

Secondary

End

Reguest
Clear

Interrupt

Power

On

(NOT

USED

BY

MUX

I

CARD)

Ground

Not
Not

used
used

I

-12V
+12V

used

Not
+5P

2-8

Table

2-3.

Connector

12

Pin Assignments

HP

27130B

I

J2

PIN

B25
B26
B27
A25
A26
A27
B28
B29
B30
A28
A29
A30
B31
B32
B33
A31
A32
A33
B34
B35
B36
A34
A35
A36
A17
B17
A18
B18
A19
B19
A20
B20
A3
B3
A2
B2

NO.

J2

MNEMONIC

(A)

SDO
SGO

(B)

SDO

(A)

SD1
SG1

(B)

SD1

(A)

SD2
SG2
SD2

(B)

SD3

(A)
SG3
SD3

(B)
SD4

(A)
SG4

(B)

SD4

(A)

SD5
SG5
SD5

(B)
SD6

(A)
SG6
SD6

(B)
SD7

(A)
SG7

(B)

SD7

SDO

SCO
SD1
SC1
SD2

I

SC2
SD3
SC3
HoOD_oN­HLED

-12V
+12V

SID. J2

MNEMONIC

TxDO

TxD1

TxD2

TxD3

I

I

TxD4

TxD5

TxD6

TxD7

TxDO
TxD1
TxD2

TxD3
CTSAO-

----

----

----

I

I

PIN.

B4

B6

A4
B7

A6

B8

A8

B9

A10

B10

A12

B11

A14

B12
B15

B13

A21

B21

A22

B22

A23

B23

A24
B24
B14

A16

B1

A1

NO.

J2

MNEMONIC

(A)

RDO

(B)

RDO

(A)

RD1

(B)

RD1
RD2

(A)

RD2

(B)

RD3

(A)

RD3

(B)

RD4

(A)

RD4

(B)

RDS
RDS

RDS
RD6

RD7
RD7

SD4
SC4
SDS
SCS

I

(A)

(E)

(A) Rx[6

I

(B)

!

(A)

I

I

I

(B)

I

I

I

I

SDS
SC6
SD7
SC7
SG

GND

+5V

GND(PWR)

SID

MNEMONIC

RxDO

RxD1

RxD2

RxD3

RxD4

RxD5

RxD7

TxD4
TxD5

I

TxD6
TxD7

----

----

----

I

I

i

I

I

I

I

I

I

2-9

HP

27130B

TO

CONNECTION

BOX

BLU

J8

50-pin

connector

17

PAIR

DOUBLE-SHIELDED

CABLE

(exposed

connection

72-pin

shield

50mm

connector)

from

TO

MUX

J2

(2)

ORN

(4)

BRN

(6) BLU

(8)

GRN

(10)

GRY

(1

2)0

:iliNica-==-~~=

(14)

:iiBR~N=--=-~~=

(16)

BLU

Figure

2-5.

MUX to

2-10

Pair

connected

RS-232C

#17

not

th

is

end.

Panel Cable

o 0

0 0
0 0

HP

27130B

Extension

The

27130B

cable between

This extension cable should NOT be longer

The

recommended bulk cable to use for

Center

Colored
nected to specific

a list

Use

sion cable.

Be
connector.
connector.

in

and

of

which colored pairs

the

instruction

careful

Cable

l\1UX

is

the

MUX

Mountain

twisted pairs of wires must be

terminal

to

match

Repeat

Fabrication

shipped

View, California

sheets supplied

the

the

with

card

and

pins

of

wires

correct

steps on

the

on

color wire pairs to

the

an extension cable connector

the

with

eight-port,

under

connectors for correct cable fabrication. Refer to

are

connected

the

sheets to connect

RS-232-C

Note

than

300

an

extension

the

HP

Note

carefully

connector

connection box.

feet maximum.

is

available

part

number:

identified

to

which

the

kit

and

correct

the

connector

the

second

kit

to

help fabrication of

from

8120-4510.

in

the

cable. These pairs must be

pins.

T-tool

connector

end

the

Hewlett-Packard

kit

to fabricate your

terminal

of

the

pins on

cable to

an

extension

Figure

the

the

Parts

con-

2 for

exten-

second
second

INST

Install

1.

Determine

Table

ALLA

the

TION

MUX as follows:

if

1-1

in Section

I

CAUTION

AL WAYS ENSURE THA T POWER TO
COMPUTER
REMOVING
FAILURE
THE

MUX.

IS

THE

TO DO

OFF BEFORE INSER

MUX CIRCUIT

SO

MAY RESULT IN

I

CARD

TING

AND

DAMAGE

CAUTION

SOME
PRINTED CIRCUIT CARD ARE SUSCEPTIBLE TO
DAMAGE
SAFETY CONSIDER A TIONS INFORMATION AT
FRONT
THE

your

computer

OF

THE

BY

STATIC DISCHARGE.

OF

THIS

CARD.

system

hfor

power requirements.

COMPONENTS USED

REFER

MANUAL

can

supply

BEFORE

the

power needed for

ON

HANDLING

THE

OR

CABLE.

TO

THE

TO

THE
THE

the

MUX card.

Refer

to

2.

Verify

installed

that

on

the

the

Memory

card. To

Configuration

verify

that

jumpers

jumper

are

2-11

is

configured

configured correctly,

correctly

for

the

EPROMs/RAMs

determine

what

types of

HP 27130B

EPROMS!RA1\1S
correct jumpers are closed.

3.

Install
manual
ponents and traces on the

4.

Connect
hood,
The test hood

Optional

The
computer.

the

which

optional

card

in

to

determine

the

cable supplied

exercises more of the card's circuitry, connect it to J2 instead of connecting

(HP

Brackets

brackets

are

installed in sockets

the

appropriate
the

correct slot. \Vhen installing

card

and on

with

the

Part

Number

BE SURE TO INSTALL THE DIAGNOSTIC TEST
HOOD
THE

LED) MATCHES THE COMPONENT SIDE

THE

1\1UX

CAN

RESULT IF

TWO DEVICES DO NOT MATCH.

for

for

the

0950-1659)

SO

ITS COMPONENT SIDE (THE SIDE WITH

CARD.

RS-232C

RS-232

U64

and

U74,

slot in

the

computer.

adjacent

card

I

CAUTION

DAMAGE

THE

cards. Press the1\1UX

from

J2

to

can

be ordered from CPC.

TO

COMPONENT SIDES

the

I

Panel

panel allow the box to

then

refer

Refer

the

card, use

RS-232-C

THE

MUX

to the

OF

be

mounted

to Table

computer

care

card

panel. If you have

ON

CARD

THE

2-1

to

verify

system installation

not

to damage

firmly

In

the

into

place.

cabinet

that

the

the

the

com-

test

cable.

of

the

The
and

optional

2-8.

mounting

brackets

for

the

RS-232

Panel (connection box)

are

shown

in

figures

2-6,2-7,

2-12

HP 27130B

connection

Box

Mounting

Bracket

Nuts

Mounting

Screw

Holes

Figure

2-6.

Option 019 Mounting Bracket for

2-13

RS-232

Panel

HP 27130B

To

install

9040A

side

edge

screws.

bracket

Computer,

of

computer

in

put

HP

model

hook-tab

and

9030A

in

fasten

slot

or

on

with

Connection

Mounting

Box

Nuts

Align
on

~

bracket

back

of

computer.

holes

with

threaded

Hook-Tab:

holes

Figure

2-7.

Option 540

Mounting

2-14

Bracket

for

RS-232C

Panel

HP 27130B

To
Computer,
slot
lower

This
in

install

of

computer

tab

bracket

cabinet.

put

in

bracket

top tab

lower

needs

cabinet,

slot.

NOTE

eight

in

in

an

lift

clear

HP

upper

up

side

90S0A

side

and

slots

put

Top

Tab

figure

2-8

lower

option 550

Tab

mounting

2-15

bracket

for

rs-232

connection box

HP

27130B

START-UP

To

start

up

and

1.

Turn

on

computer

2.

A self

-test

run

automatically

manual

a.

b.

for

If

the

diagnostic test hood

card

should

not

does
test. For
Hewlett-Packard;
repair
able

should occur, plus the LED located on the test hood should light
LEDs (the one
or

If

the

parts

the

diagnostic test hood

if

they

verify correct operation

system power.

is

included on the card.

at

power-on

your

system for a description

light

briefly

light

at

all, the

either

card, however,

lists,

light

of these

refer

and

schematic logic diagrams, respectively.

mounted

and

stay on,

or

is

not

and

go out. This indicates

card

may

latter

to

the

refer

to

is

installed when

on

the

the

of

the

l'vfUX,

perform

The

host

computer

if

it

must

be

of

self-test

installed when

be defective. If

two cases, we recommend

next

paragraph

Sections

card

causes

and

are

V,

the

the

VI,

the

one

same

system determines

invoked by

initiation.

the

self

that

the

for

reshipment

and

VII

self

-test

on

the

as

in step

the

following:

either

the

user.

Refer

-test

executes,

the

card

LED stays on,

that

for

maintenance

executes,

diagnostic test hood) do not

2.a.

the

passed self

the

you

information.

the

briefly

if

to

the

LED located on

-test.

card did not pass

return

information,

conditions

and

the

self

appropriate

If

the

the

card

If

you wish to

replace-

in

step l.a.

go out.

light

-test

LED

self-

If

at

is

the

to

the

all,

3.

Refer

to

your

system

documentation

RESHIPMENT

If

the

MUX

and

indicating

the

Pack

available, good commercial packing

ping companies have

ANTI-STATIC

is

to

be shipped

the

reason for shipment. Include

card

in

the

PRECAUTIONS.

original

the

facilities

to

Hewlett-Packard

factory

for

information

the

packing material,

material

and

should be used. Reliable commercial packing

materials

for

part

any

to

on using

reason,

number

if

available.

repack

the

MUX

in

your system.

attach a tag

of

the

MUX.

If

the

item. BE SURE TO OBSERVE

the

identifying

original

material

the

and

owner

is

not

ship-

2-16

PRINCIPLES OF OPERATION _

~----------------------------------------------------------------~

lllllll!.!iji

••

11_

I

D!O

INTRODUCTION

This section explains how

FUNCTIONAL

A

functional

3-1.

Reference

that

figure

D37,

7-1,

letters A

dividual sheets;

block diagram

7-1

etc., where

through E and

DESCRIPTION

will also

consists

the

and 7 -1

quadrant quadrant

I

_1-

A11

I I

I

sheet

- -

Circuitry
circuits, a
Serial
Circuit
transmitters
(backplane)

on

the

MUX

Z-

80B microprocessor (CPU),

I/O

circuits (510/2s),

(MIC)

gate

and

and

peripheral

card

array,

receivers (compatible

the

MUX works or operates.

of

the

HP 27130B

be

made

to

the

schematic logic diagram in Section VII, figure

of

five sheets. References to this figure will

first digit

numbers

refers to the figure number. For example,

includes a Backplane

up
64K bytes

device panel (frontplane) connectors.

0,

2,3,4,

11

through

I

I

-

D37

sheet

I

to

16K bytes of EPROM

58

3

three Z-80

of

dynamic

with

Eight-Channel

or 5) refers to

(Ail,

037,

Interface

RS-232-C

Circuit

Counter

in

RAM

two 28

(48K available)

the

etc.)

and

Multiplexer

be

as follows:

sheet number; the

refer

to

the

(BIC)

gate

Timer

Circuits (CTCs),

-pin

sockets, a Memory

R5-422-A/R5-423-A

CCITT V.28),

is

shown

All,

7-1;

combination

quadrants

array

and its support

and

in

figure

7-1.

C23,

on

the

four Z-80

Interface

I/O

channel

Note

7-1;

of

in-

The

heart

of

the

l\'1UX

card

EPROM controls

in

The Backplane
circuit
The BIC

Memory Access (OMA) for

The

provide baud

CPU as

The Memory
which handles dynamic
MIC also contains
decodes addresses
rest of

which

is

Counter

I/O

the

MUX card.

accessed

devices.

the

Interface
controls

by

Timer

rate

Interface

Circuits (CTC, U51, U61,

clocks

and

functions of

Circuit

the

the

Z-80B

and

Circuit

refresh

the

DMA controller, provides

provides

is

the

Z-80B

(BIC,

communication

CPU as

data

transfer

other

necessary clocks for

(MIC, U54, see A32,

and

wait

CPU (U33, see D24,

the

card.

U41, see A14,

and

an

I/O

to

memory.

address multiplexing for

states for

handshaking

device for

and

U71,

7-1)

the

slow EPROMs,

3-1

7-1)

is a custom gate

control

see

the

MUX.

is a custom

the

interrupt

7-1),

which

with

information,

£43,7-1)

They

64K

vectors

and

through a program

array

the

I/O

channel

and

divide

are

gate

bytes

for

provides reset for

the

accessed by

array

integrated

of

dynamic RAM.

backplane

stored

integrated

(backplane).

through

system clock to

Direct

the

Z-80B

circuit

The

interrupts,

the

for

the

HP

27130B

The Serial

I/O

circuits (510s, U43, U53,
multiplexers, receivers, and drivers
the

frontplane

connector

12.

(see

U63

figure 7

-1,

and

U73, see A42,

sheet

5),

provide serial

7-1)

data

and

their

associated

communication

to

3-2