FEATURES
• Implements a Time-Space-Time fabric with STS-1/AU-3 granularity.
• Provides 64 ingress STS-12 equivalent ports for a total of 64*12 = 768 STS-1 flows.
• Supports non-blocking permutation switching of 768 STS-1 flows at STS-1 granularity.
• Provides 64 egress STS-12 equivalent ports consisting of 768 STS-1 flows.
• Interfaces to STS-48 and STS-192 devices by aggregating 4 and 16 STS- 12 equivalent flows respectively.
• Supports multicast and broadcast of STS-1 streams.
• Supports STS-12 equivalent flows with an extended 8B/10B protocol over 777.6 MHz LVDS links.
• Supports multi-plane (inverse multiplexed) switch architectures in conjunction with the PM5310 TBS device and PM7390 S/UNI®-MACH48.
• Recovers clock and data at each ingress port, synchronizes with an internal 77.76 MHz clock, and produces egress streams with a common 777.6 MHz clock.
• Detects and reports inactive or erred LVDS links via the microprocessor interface.
• Supports two sets of switch settings and a controlled method of changing settings on STS-1 frame boundaries.
• Supports multiple fabric architectures that range from 40 Gbit/s (1 TSE) to 160 Gbit/s (4 TSE devices) in a single stage, and up to 2.5 Tbit/s using multistage fabrics.
• Ingress to egress STS-1 switching latency of approximately 900 ns.
• Supported by an efficient algorithm to compute control settings for all permutation loads for all supported fabric architectures. Algorithms are also available for multicast/broadcast allocation.
• 1.8 V CMOS core and 3.3 V CMOS/LVDS input/output.
• Requires no external RAMs or logic parts.
• Provides a standard IEEE 1149.1 JTAG port.
• Power Consumption of 13 W (maximum).
• Packaged in a 520 pin 40mm by 40mm UltraBGA.
• Supports a 16-bit microprocessor interface which is used to initialize the device, to write switch settings into onchip control tables, and to monitor device performance.

APPLICATIONS
In combination with the PM5310 TBS (TelecomBus Serializer and Time-Space switching stage), the PM5315 SPECTRA-2488, the PM5316 SPECTRA-4X155, and the PM7390 S/UNI-MACH48, the PM5372 TSE supports a variety of flexible Layer 1 / Layer 2 architectures. These architectures can implement features commonly found in DCS, ADM, and multi-service switch/router equipment.
The PM5372 TSE provides the functionality that enables networking equipment to:
• Connect to (multiple) SONET rings.
• Participate in mesh-connected architectures.
• Serve as SONET-connected terminal multiplexers.
• Groom traffic at STS-1/AU-3 granularity.
• Support channelization of OC- 3/12/48/192 line rates.
• Support concatenated lines rates including STS-1 (DS-3), STS-3c, STS- 12c, STS-48c and STS-192c.
• Support add, drop, and drop-andcontinue.
• Support UPSR, 2-BLSR, 4-BLSR, and 1+1 or 1:N APS.
• Support mesh-based APS systems.