VSC055 データシートの表示（PDF） - Vitesse Semiconductor
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VSC055 Datasheet PDF : 2 Pages
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VSC055
Enhanced I2C Backplane Controller
GENERAL DESCRIPTION:
The VSC055 Enhanced I2C Backplane
Controller is an integrated CMOS circuit
that significantly reduces system cost by
integrating all of the digital logic typically
required to monitor a storage enclosure.
The VSC055 may be used in any embedded control application
including parallel SCSI, Fibre Channel or any other application
where the monitoring and control of a large number of digital I/O
signals is required. Programming the VSC055 is easy through a
convenient programming model, which reduces the overall
duration of the design-in cycle. Data is read from and written to
the device over an addressable I2C serial interface, allowing
multiple VSC055 devices on a single two-wire bus.
Furthermore, a key strength of the VSC055 is the ease in which it
interoperates with Vitesse Fibre Channel port bypass circuits
(PBC) and Enclosure Management Controllers, to provide a
complete storage control chipset.
VSC055 APPLICATION DIAGRAM:
Arbitrated Loop A
Arbitrated Loop B
UpStream
DownStream DownStream
UpStream
Local I/O (x26)
RS-485
ICMB (opt.) xcvr
Vitesse
Enclosure
Controller
VSC120
Flash
(1M x 8 or
512K x16)
I2C I/F
GPIOs
Vitesse
Backplane
Controller
VSC055
DRIVE PRESENT and
FAULT LEDS
POWER SUPPLY CONTROL,
FAN TACHS and PWM
LM75
(Temp)
Heartbeat
I2C I/F
Local I/O (x26)
Drive 1
Drive 2
Drive 3
Drive 4
Drive 5
Drive 6
Drive 7
Drive 8
Drive 9
Drive 10
Drive 11
Drive 12
Drive 13
Drive 14
Vitesse
Enclosure
Controller
VSC120
RS-485
xcvr
ICMB (opt.)
Flash
(1M x 8 or
512K x 16)
I2C I/F
GPIOs
DRIVE PRESENT and
FAULT LEDS
Vitesse
Backplane
Controller
VSC055
Power Supplies
& Fans
POWER SUPPLY CONTROL,
FAN TACHS and PWM
LM75
(Temp)
X24C16
EEPROM
X24C16
EEPROM
For more information on Vitesse Products visit the Vitesse web site
at www.vitesse.com or contact Vitesse Sales at (800) VITESSE
or sales@vitesse.com
©2003 Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
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