physical interfaces. Multiple SCSI controllers can be

supported by a single SSC200 with the addition of

external DMA control signal routing logic.

For lower cost applications, a simple SCSI bus

transceiver device utilizing the 28 available general-

purpose I/O signals may replace the external SCSI

controller.

Architecture

System Level Integration (SLI) techniques were

used to create a complete system on a chip. The

SSC200 integrates a RISC embedded processor

and

additional

DMA,

memory

and

controller

functionality.

The SSC200 includes three, I

master controllers. These controllers may be used

to interface to off-the-shelf instrumentation and

control devices commonly used in environmental

monitoring and management applications such as

Vitesse's SSC050/055 Backplane Controller.

The SSC200 requires off chip memory for firmware

code storage.

Most applications will use flash

memory devices for non-volatile storage.

Static

RAM

may

be

added

for

higher

performance

applications.

The SSC200 has four external chip

selects each with a one-megabyte address range.

Two RS-232 serial ports provide assist firmware

debug. One port is dedicated to in circuit emulation

for the embedded processor.

The second port

implements a XMODEM connection for additional

debug

and

firmware

download.

Firmware

downloads are also supported via ESI and SCSI

buses.

Software

The software designed to execute on the SSC200

determines

the

characteristics

of

the

overall

enclosure management solution.

Most enclosure

management applications will be unique to a

customer's

individual

product.

The

SSC200

firmware architecture uses a Personality Module with

captures the unique functionality required by a

particular application. Vitesse provides a Software

Development Kit (SDK) to customers to assist their

development of their Personality Module.

The SDK includes software to implement an ESI and

a parallel SCSI transport for a SAF-TE or SES

diagnostic environment. In addition, the SDK also

includes a System Services module with provides

APIs to the peripheral functionality (interrupts, timers

etc.) in the SSC200.

The

SSC200

shares

a

similar

hardware

and

firmware architecture as Vitesse’s SSC100 for

dedicated port FC-AL SES.

This allows system

designers

to

leverage

enclosure

management

strategies

and

implementations

across

parallel

SCSI, ESI and dedicated port FC-AL storage

solutions.

For More Information:

www.vitesse.com

email: prodinfo@vitesse.com

TEL: 1-800-VITESSE

FAX: 805/987-5896

Vitesse Semiconductor Corporation reserves the right to make

changes in its products, specifications or other information at any

time without prior notice. Therefore the reader is cautioned to

confirm that this datasheet is current prior to placing any orders.

The

company

assumes

no

responsibility

for

any

circuitry

described other than circuitry entirely embodied in a Vitesse

product.

(Version 1.0)

© 2000 Vitesse Semiconductor Corporation, All Rights Reserved.

Transport

Diagnostic Interface

Personality Module

System Services

SDK Firmware Block Diagram

32 Bit

Timer

Enclosure

Services

Interface

General

Purpose

I/O

DMA

Interface

Serial

ICE

1024x32

SRAM

Memory

Interface

General

Purpose

UART

Enclosure

Services

Interface

Interface

RISC

Engine

Interface

SSC200 Block Diagram