HFC Series

HFC Series targets PC-based applications and comes with an integrated local-bus interface, mostly used for the connection to the PCI bus. In PCIe environments, a PCI-to-PCIe bridge chip can be used to adapt HFC Series.

HFC-4S and HFC-8S are a HDLC B- and D-channel controller with 4 resp. 8 integrated S/T interfaces. They can be used for ISDN basic rate lines. All channels are served fully duplex by FIFOs. Also implemented is a PCM128 / PCM64 / PCM30 highway interface and an universal external bus interface.

• ICs of HFC Series have integrated HDLC controllers for all kinds of BRI equipment
• A PCM128 / PCM64 / PCM30 interface for CODEC or inter-chip connection is also integrated
• single chip ISDN-S/T-controller with B- and D-channel HDLC support
• 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
• PCM128 / PCM64 / PCM30 interface configurable to interface for inter-chip connection (e.g. external CODECs)
• universal external bus interface configurable into PCI bus, ISA-PnP, PCMCIA or integrated 8 bit parallel microprocessor interface as well as SPI