Tristate Machinery Dismantlers Forum > STATE OF IOWA
> Electrical Components
> Used
> 6 pc. serano# SSC050 (L2A0828), i 2 c backplane control
6 pc. serano# SSC050 (L2A0828), i 2 c backplane control
2C 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
multiple SSC050 devices on a single two-wire bus.
I2C Serial Interface (DC to 400Khz)
40 Programmable, Bi-directional I/O Pins
Flexible FC-AL Port Bypass Control Logic
Bit Programmable Interrupt Control
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 I
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
functionality beyond simple input or output to
support the integrated fan speed sensors and
The built-in flexibility of the SSC050 allows all forty
of the I/O pins to drive LEDs through a pull-up
resistor. Each pin is independently programmed to
flash an LED at one of seven predefined flash rates.
Up to sixteen of the forty I/Os may be configured to
monitor and manage FC-AL port bypass control
devices. Eight pairs of I/Os include special logic to
monitor Enable Bypass signals, which may be
generated by FC-AL disk drives, and control Port
Bypass Control Enable (PBC_Enx) signals on port
bypass devices such as Vitesse s VSC7122.
The unique functionality of the SSC050 provides
the system designer with additional flexibility and
control over the port bypass function in a FC-AL
enclosure. This allows system designers to
differentiate and add value by controlling when and
how a drive is removed or inserted into a FC-AL
This feature may also be used for non-FC-AL
applications. It is useful wherever system
designers require flexible monitoring and control of
There are up to forty interrupt sources within the
SSC050. I/O pin signal transitions, fan speed
sensor threshold levels and transitions on port
bypass inputs may be configured to generate
interrupts. Advanced interrupt priority and
management logic provides the system designer
with maximum flexibility and a simple and
