Functions

Block Diagram

Features

• single chip ISDN-S/T-controller with B- and D-channel HDLC support
  
  
• 4 integrated S/T interfaces
  
  
• full I.430 ITU S/T ISDN support in TE and NT mode
  
  
• 32 independent read and write HDLC-channels
  for e.g. 8 ISDN B-channels, 4 ISDN D-channels and 20 timeslots on the PCM interface
  
  
• B-channel transparent mode independently selectable
  
  
• up to 64 FIFOs; FIFO-size configurable
  
  
• each FIFO can be assigned to an arbitrary channel of any S/T or PCM interface
  
  
• max. 31 HDLC frames (with external 128k or 512k SRAM) or 15 HDLC frames (with 32k built-in RAM) per FIFO
  
  
• 1 - 8 bit processing for subchannels selectable
  
  
• 56 KBit/s restricted mode for U.S. ISDN lines selectable
  
  
• B-channels for higher data rate combinable
  
  
• PCM128 / PCM64 / PCM30 interface configurable to interface MITEL ST^TM bus (MVIP^TM) or Siemens IOM2^TM and Motorola GCI^TM (bearer slots supported only) for inter-chip connection (e.g. external CODECs)
  
  
• H.100 data rate supported
  
  
• universal external bus interface configurable into PCI bus, ISA-PnP, PCMCIA or microprocessor interface as well as SPI (serial processor interface)
  
  
• multiparty audio conferences switchable
  
  
• DTMF detection on all B-channels
  
  
• Timer with interrupt capability
  
  
• CMOS technology 3.3V (5V tolerant inputs)
  
  
• MQFP 208 package, RoHS compliant
  
  

Applications

• ISDN multi-BRI terminal adapters
  
  
• ISDN PABX
  
  
• ISDN LAN routers
  
  
• ISDN least cost routers
  
  
• ISDN test equipment
  
  

Linux Driver Generic Linux drivers for HFC-4S are available.

Evaluation Board Contact us for an evaluation board of HFC-4S.

Datasheet

Copyright © 2007 Cologne Chip The ISDN Chip Company!

Last Modified: 23/05/2007