SSC050 查看數據表（PDF） - Vitesse Semiconductor
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SSC050 Datasheet PDF : 2 Pages
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SSC050
I2C Backplane Controller
Product Brief
Overview
The SSC050 I2C Backplane Controller is a CMOS
integrated circuit, which enables a system designer
to reduce system cost by integrating all of the digital
logic typically required in a storage enclosure. The
SSC050 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 SSC050 is easy
through a convenient programming model, which
reduces the overall duration of the design-in cycle.
Data is read and written to the device over an
addressable (3-bit) I2C serial interface, allowing
multiple SSC050 devices on a single two-wire bus.
Device Features
• I2C Serial Interface (DC to 400Khz)
• 4 Fan Speed Monitor Inputs
• 40 Programmable, Bi-directional I/O Pins
• Flexible FC-AL Port Bypass Control Logic
• Bit Programmable Interrupt Control
• Seven LED Flash Rates
• 64 PQFP Package
I2C Serial Interface
The SSC050 uses an I2C serial interface to
communicate with embedded controllers such as
Vitesse’s SSC100/200 and VSC205/210. The slave
interface on the SSC050 uses a three-bit (A2:0)
addressing scheme for identification on the serial
interface. The ASEL pin determines the four-bit
device type identifier. Up to sixteen, SSC050 or
VCS055 devices may reside on a single I2C serial
interface.
I/O Pins
The SSC050 has forty bi-directional I/O pins. The
functionality of these pins is configurable via
programming of the SSC050. All I/O pins have a
12mA drive strength and support 3.3V TTL. To
enable the designer to configure and program the
SSC050, the forty I/Os are arranged in registers of
eight pins. Certain groups of pins have additional
functionality beyond simple input or output to
support the integrated fan speed sensors and
FC-AL port bypass control.
X24C16
EEPROM
I2C Serial
Interface
Temperature
Sensor (LM75)
Local I/O (x8)
VITESSE
Embedded
Controller
(SSC100)
Cu or
Optics
PBC_EN VSC7120
PBC_EN
Flash
(64K x 8)
VITESSE
Backplane
Controller
(VSC050)
PBC_EN1
PBC_EN2
PBC_EN3
PBC_EN4
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
.
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