SSC050-01 Datasheet, PDF (5/79 Pages) Maxim Integrated Products – Two-Wire Serial Backplane Controller

Introduction
Chapter 1 Introduction
SSC050-01
Data Sheet
The SSC050-01 is a I/O-intensive peripheral device which is intended to be a portion of a cost effective
FC-AL, SCSI, SAS or SATA enclosure management solution. The device contains an address
programmable two wire serial interface, a block of control and status registers, I/O port control logic,
specialized port bypass control logic and a clock generation block. Along with an external crystal, the
device can be configured to support up to 40 bits of general purpose I/O or 16 bits of general purpose I/
O, 16 bits of port bypass control (8 pairs supporting 8 drives), 4 fan speed monitoring inputs and 4 pulse
width modulated outputs.
The SSC050-01 is capable of supporting various combinations of individual PBC/CRU/SDU functions
as well as integrated solutions. The control register portion of the device allows the user to individually
program each I/O pin as an input, output or open source/drain output. Additional control features
include selectable flash rates for direct LED drive, input edge detection for interrupt generation, fan
speed monitoring and pulse width modulated outputs. The addressing capability of the SSC050-01
includes three pins, which are used for device addressing, as well as one pin, which can be used to select
two device type identifiers. Sixteen devices can be used in a single two-wire serial interface system.
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Revision 4.0
November 10, 2004