PEF20550-H Product Details
The PEB 2055 (Extended PCM Interface 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 subscribersThe EPIC-1 is dedicated to switch PCM data between two serial interfaces, the system interface (PCM interface) and the configurable interface (CFI). The EPIC-1 performs non-blocking time and space switching for up to 128 channelsSince the system cost of the EPIC-1 is divided by the number of lines it controls, ar highly economical implementation of digital or analog subscriber lines can be performed The EPIC-S (PEB 2054) is a pin compatible device offering half the switching capacity of the EPIC-1. Therefore the EPIC-S is capable of handling up to 16 ISDN or 32 analog subscribers. It is programmable according to the EPIC-1 with respect of the pins not available.The EPIC is implemented in a Siemens advanced CMOS-technology and manufactured in a P-LCC-44-1 package.The EPIC is member of a chip family supporting a highly economical implementation of line cards and subscriber terminals.
Feature
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
(Picture: Pinout)
(Picture: Diagram)
