描述 Description

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.

特性 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