VSC205
LVD SCSI Enclosure
Management Controller
Product Brief
Overview
The VSC205 is an enclosure management controller
for peripheral storage applications. This device
supports in-band and out of band management
strategies. The VSC205 implements in-band SES
and SAF-TE enclosure management via the
integrated SCSI interface. Out of band solutions
are possible using IPMI (Intelligent Platform
Management Interface) or through a customer
unique approach.
JBOD and RAID subsystem developers are provided
a common hardware and software platform, which
supports all common subsystem diagnostic and
enclosure management strategies. The VSC205
may be used as the master controller of a I
2
C serial
interface communicating with scalable slave
backplane controllers such as Vitesse VSC055/050
and other industry standard devices.
Device Features
•
Integrated SCSI Controller with LVD or Single
Ended operation over a wide SCSI bus
•
Target and Initiator mode with wide SCSI
arbitration and selection support
•
Disconnect and reselect support minimizing
SCSI bus connect time
•
Three master/slave mode I
2
C serial interfaces
•
32-bit, 40Mhz RISC CPU w/debug port
•
RS-232 Monitor Port
•
IPMI 1.0 Compatible
•
External Flash and/or SRAM (60ns to 350ns)
•
Two integrated 8K byte user data SRAMs
•
3 bits of user definable general purpose I/O with
up to 3 external interrupts
•
General purpose UART
•
160 PQFP Package
Software Development Kit Features
Local I/O (x3)
Power Supplies
& Fans
LVD/SE
SCSI Bus
•
Modular architecture to support migration to
other I/O technologies and protocols
•
Extensive peripheral device library
•
Sample Personality Module source code
VITESSE
VSC205
LVD SCSI
Enclosure
Controller
Wide or Narrow SCSI Bus
SCSI Applications
The VSC205 offers dedicated port enclosure
management across a parallel SCSI bus.
The
VSC205’ integrated LVD SCSI controller is used to
s
provide a high performance, SES or SAF-TE
solution. No external components are required with
this approach; the VSC205 integrates both the data
and command buffers and control logic.
This
architecture provides system designers with a
common platform for various SCSI bus speeds and
physical interfaces.
I
2
C
Serial
I/F
Flash
(1M x 8)
Drive 0
Drive 1
Drive 2
VITESSE
Backplane
Controller
Drive 3
Drive 4
Drive 5
X24C16
EEPROM
LM75
(Temp)
Drive 6
Drive 7
Architecture
System Level Integration (SLI) techniques were
used to create a complete system on a chip. The
VSC205 integrates a RISC embedded processor
and additional DMA, memory and controller
functionality.
The VSC205 includes three, I
2
C serial interface bus
master controllers. These controllers may be used
to interface to off-the-shelf instrumentation and
control devices commonly used in environmental
Typical Application Block Diagram
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
