VITESSE SSC100 Datasheet

SSC100

FC-AL Embedded
Controller
Product Brief

Overview

The SSC100 is a Fibre Channel NL_Port integrated
circuit tailored for embedded control applications.
When used in conjunction with Vitesse's SSC050 or
VSC055 Backplane Controller, the two devices
create a chip set solution, which scales to meet
system designer's requirements for in-band FC-AL
enclosure management. The SSC100 allows system
designers to take advantage of the connectivity
benefits of Fibre Channel such as cable distance and
addressing when designing systems dependent on
remote embedded control. An embedded 53Mhz, 32­bit RISC processor provides a processing platform for
monitoring and control firmware. The SSC100
includes three, I2C serial interface bus master
controllers, which allow system designers to use cost
effective, off-the-shelf instrumentation and control
devices. Two UARTs assist firmware development
and out-of-band communication.

Device Features

• Integrated 1Gb/s Serial Transceiver

• Three I2C Serial Interface Controllers

• 32-bit, 53Mhz RISC CPU w/debug port

• Private Loop Direct Attach Profile

• IPMI 1.0 Compatible

• RS-232 Monitor Port

• Four External 1MB Address Ranges

• External Flash and/or SRAM (60ns to 250ns)

• Internal 4KB SRAM

• Eight Programmable General Purpose I/Os

• 100 PQFP Package

Software Development Kit Features

• Modular architecture to support migration to other
I/O technologies and protocols.

• Extensive peripheral device library

• Sample Personality Module source code

Cu or

Optics

X24C16

EEPROM

I2C Serial
Interface

Temperature

Sensor (LM75)

Local I/O (x8)

VITESSE

Embedded

Controller

(SSC100)

Flash

(64K x 8)

VITESSE

Backplane

Controller

(VSC055)

PBC_EN

PBC_EN

PBC_EN1
PBC_EN2
PBC_EN3
PBC_EN4

VSC7120

VSC7120

VSC7122

LEDs (x8)

Drive Bay 1
Drive Bay 2
Drive Bay 3
Drive Bay 4

Power Supplies

Fans (x4)

Application for a Single Loop, Single Controller with Four Drives

Applications

The SSC100 is ideal for remote monitoring and
control applications such as FC-AL storage enclosure
management. The SSC100 may be used to
implement a complete SCSI Enclosure Services
(SES) or SAF-TE solution in Fibre Channel JBODs,
RAID subsystems and servers. The embedded
firmware capabilities of the SSC100 allow storage
system architects to differentiate their products via
firmware. Software Development Kit (SDK) is
provided by Vitesse to accelerate the development of
firmware Personality Modules. Multiple SSC100s
may be used in fully redundant, dual loop
applications with the use of a flexible heartbeat
mechanism.

Architecture

System Level Integration (SLI) techniques were used
to create a complete system on a chip. The SSC100
integrates a RISC embedded processor, high
performance Fibre Channel protocol engine, a
gigahertz transceiver and memory to create an
embedded system for enclosure management.

The SSC100 includes three, I2C serial interface bus
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.

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 Fibre Channel.

Software

The software designed to execute on the SSC100
determines the characteristics of the overall
enclosure management solution. Most enclosure
management applications will be unique to a
customer's individual product. The SSC100 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 a FC
transport and 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 SSC100.
The System Services also includes driver libraries for
popular I2C devices such as National's LM75.

System Services

The SSC100 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 SSC100 has four external chip selects each with
a one-megabyte address range.

General

Purpose

I/O

Memory

Interface

RISC

Engine Interface

Interrupt

Control

Fibre

Channel

Core

32 Bit
Timer

Bus

Interface

Unit

1024x32

SRAM

I2C

Interface

I2C

Interface

I2C

General

Purpose

UART

Serial

ICE

Personality Module

Diagnostic Interface

Transport

SDK Firmware Block Diagram

For More Information:

www.vitesse.com

email:[e-mail]
TEL: 1-800-VITESSE FAX: [phone]

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.

SSC100 Block Diagram