IMSC011 データシートの表示（PDF） - STMicroelectronics

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IMSC011

Link adaptor

STMicroelectronics 

1 Introduction

The INMOS communication link is a high speed system interconnect which provides full duplex communi-

cation between members of the transputer family, according to the INMOS serial link protocol. The

IMS C011, a member of this family, provides for full duplex transputer link communication with standard

microprocessor and sub-system architectures, by converting bi-directional serial link data into parallel

data streams.

All transputer products which use communication links, regardless of device type, support a standard com-

munications frequency of 10 Mbits/sec; most products also support 20 Mbits/sec. Products of different

type or performance can, therefore, be interconnected directly and future systems will be able to communi-

cate directly with those of today. The IMS C011 link will run at either the standard speed of 10 Mbits/sec

or at the higher speed of 20 Mbits/sec. Data reception is asynchronous, allowing communication to be in-

dependent of clock phase.

The link adaptor can be operated in one of two modes. In Mode 1 the IMS C011 converts between a link

and two independent fully handshaken byte-wide interfaces, one input and one output. It can be used by

a peripheral device to communicate with a transputer, a peripheral processor or another link adaptor, or

it can provide programmable input and output pins for a transputer. Two IMS C011 devices in this mode

can be connected back to back via the parallel ports and used as a frequency changer between different

speed links.

In Mode 2 the IMS C011 provides an interface between an INMOS serial link and a microprocessor system

bus. Status and data registers for both input and output ports can be accessed across the byte-wide

bi-directional interface. Two interrupt outputs are provided, one to indicate input data available and one

for output buffer empty.

VDD

GND

CapMinus

ClockIn

Reset

SeparateIQ

LinkOut

LinkIn

System

Services

Input

Interface

8 I0–7

IAck

IValid

Output

8

Link

Interface

Figure 1.1 IMS C011 Mode 1 block diagram

Q0–7

Qack

QValid

VDD

GND

CapMinus

ClockIn

Reset

SeparateIQ

LinkSpeed

LinkOut

LinkIn

System

Services

Link

Interrupt

Control

Register

Select

Data and

Status

Registers

InputInt

OutputInt

RS0

RS1

RnotW

notCS

8 D0–7

Figure 1.2 IMS C011 Mode 2 block diagram

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