PEB2055

集成电路通信 ICs for Communications

Overview

The PEB 2055 Extended PCMInterface Controller is a highly integrated controller circuit optimized for analog and ISDN line card and central switches applications. The EPIC-1 provides the circuitry necessary to manage up to 32 digital ISDN or proprietary or 64 analog subscribers.

Features

Switching

• Board Controller for up to

– 32 ISDN or 64 analog subscribers PEB 2055

– 16 ISDN or 32 analog subscribers PEB 2054

• Non-blocking switch for

– 128 channels PEB 2055

– 64 channels PEB 2054

• Switching of 16-, 32-, or 64-kbit/s channels

• Two consecutive 64-kbit/s channels can be switched as a single 128-kbit/s channel

• Freely programmable time slot assignment for all subscribers

• Two serial interfaces PCM and CFI programmable over a wide data range 128 - 8192 kbit/s

• Data rates of PCM and configurable interface independent from each other data rate

adaptation

•PCM-interface

– Tristate control signals for external drivers

– Programmable clock shift

– Single or double data clock

• Configurable interface

– Configurable for IOM-, SLD- and PCM-applications

– High degree of flexibility for datastream adaptation

– Programmable clockshift

– Single or double data clock

• Synchronous µP-access to two selected channels