DESCRIPTION The ML53612 is a complete CT Bus system interface and time-slot interchange device that provides a cost-effective connection between a computer board’s telephony interfaces or signal processing resources and the CT Bus. The ML53612 is an evolution of existing time-slot interchange ICs which offers seamless interoperability with SCbus devices. FEATURES • High functionality, low cost implementation of the ECTF H.100/H.110 interoperability specifications. • Simple to connect PCI and cPCI™ board-level circuitry to the universally accepted CT Bus™. • Ultra slim profiling (176-pin LQFP package). • Up to 128 programmable connections (64 transmit and 64 receive) to any of the 4096 timeslots on the H.100/H.110 CT Bus. • 8-channel stream-to-stream switching for data stream connections at variable rates. • Implementation of all compatibility signals for complete interoperability with existing 4 MHz SCbus™, 8 MHz SCbus, 2 MHz MVIP-90™ devices, and H-MVIP™. • Master PLL meets AT&T 62411 MTIE and jitter attenuation requirements to provides reliable clock synchronization for network-grade connection to digital network interfaces. • Supports all H.100/H.110 CT Bus clock fallback features. • Choice of constant or minimum switching delay on a per time-slot basis. • 3.3 V I/O with 5 V tolerant input. • Supports multiplexed and nonmultiplexed address/data bus modes for both Intel and Motorola microprocessors. • Supports CT Bus optional message channel interface, for both H.100 (PCI) and H.110 (cPCI) applications. • Supports a variety of framing formats via a configurable local bus. • Efficient microprocessor interface access to Local and CT Bus data streams through direct parallel access to/from transmit and receive switch. • Direct Parallel Access to/from Transmit and Receive switch allows efficient microprocessor interface access to local and CT Bus data streams. Applications • Low- to medium-density computer telephony hardware (PCI and cPCI platforms) • Enhanced service platforms • Private branch exchanges (PBXs) • Wireless base stations • Internet telephony systems • Digital trunking equipment
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