| HFC-S+ |
The HFC-S+ is not recommended for new projects. Please use XHFC-1SU instead.
Functions
The HFC-S+ is a HDLC B- and D-channel controller with integrated S/T interface. It can be used for ISDN basic rate lines. All channels (2B+D) are served fully duplex by six deep FIFOs. The HFC-S+ has an integrated PC-ISA bus interface, a PCM30 highway interface and a microprocessor interface.Block Diagram
Features
- single chip ISDN-S-controller with B- and D-channel HDLC support
- integrated S/T interface
- independent read and write HDLC-channels for 2 ISDN B-channels and one ISDN D-channel
- B1- and B2-channel transparent mode independently selectable
- FIFO-Depth: B-channel: 4x 7.5 KByte, maximum 31 HDLC frames per FIFO
- 56 KBit/s restricted mode for U.S. ISDN lines selectable by software
- full I.430 ITU S/T ISDN support in TE and NT mode for 3.3V and 5V power supply
- B1+B2 HDLC mode
- PCM30 interface configurable to interface MITEL STTM bus (MVIPTM), Siemens IOM2TM or GCITM for interface to U-chip or external CODECs
- direct 8 bit ISA-PC bus interface with buffers for ISA data bus
- one of 6 interrupt channels on ISA-PC bus selectable by software
- I/O address selectable by software
- only 2 I/O addresses used on PC-ISA bus
- microprocessor interface compatible to Motorola bus and Siemens/Intel bus
- simple DMA access to PCM30 interface for tone synthetisation
- timer with interrupt and watchdog capability in processor mode
- CMOS technology 3-5V
- case QFP 100
D-channel: 2x 512 Byte, maximum 15 HDLC frames per FIFO
Applications
- ISDN PC cards (we recommend to use the HFC-SP instead because of its integrated ISA PnP)
- ISDN terminal adapters
- ISDN mini PABX
- ISDN smart NT
- ISDN modems (like USB devices)
Linux DriverA generic Linux driver is available for HFC-S+. |
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Datasheet
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