ACS8595: ATCA Line Card Protection Switch for SONET/SDH AdvancedTCA Systems

The ACS8595 ATCA is a highly integrated, single-chip solution for "Hit-less" protection switching of SEC (SDH/SONET Equipment Clock) + Sync clock “Groups", from Master and Slave SETS clock cards and a third (Stand-by) source, for line cards/blades in a SONET or SDH ATCA (Advanced Telecommuncications Computing Architecture) Network Element.

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Features

SONET/SDH applications up to OC-3/STM-1 bit rates
Switches between grouped inputs (SEC/Sync pairs)
Inputs: three SECs at any of 2, 4, 8 kHz (and N x 8 kHz multiples up to 155.52 MHz), plus Frame Sync/Multi-Frame Sync
Outputs: Six SEC clocks at any of several spot frequencies from 2 kHz up to 77.76 MHz via the TTL/CMOS port and up to 311.04 MHz via the PECL/LVDS port
Modes for E3/DS3 and multiple E1/DS1 rate output clocks
Generates 8 kHz Frame Sync and 2 kHz Multi-Frame Sync output clocks with programmable pulse width and polarity
Frequency translation of SEC input clock to different local line card clocks
Robust activity monitoring on all clock inputs
Supports Free-run, Locked and Digital Holdover modes of operation
Automatic "Hit-less" source switchover on loss of input
External force fast switch between SEC1/SEC2 inputs
Phase Build-out for output clock phase continuity during input switchover
PLL “Locked” and “Acquisition” bandwidths individually selectable from 18, 35 or 70 Hz
Serial interface for device set-up
IEEE 1149.1 JTAG Boundary Scan is supported.
Single 3.3 V operation, 5 V I/O compatible
Operating temperature (ambient) of -40 to +85°C
Available in 100-pin LQFP package
Lead (Pb)-free version (ACS8595T), RoHS and WEEE compliant