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Functions
The HFC-S2M is a HDLC B- and D-channel controller with integrated S2M interface.
It can be used for ISDN primary rate lines. All channels (30B+D) are served
fully duplex by six deep FIFOs. Also implemented is a PCM64/PCM30 highway
interface, which is able to connect to MITEL STTM bus (MVIPTM),
Siemens IOM2TM or GCITM bus and a universal external
bus interface.
Features
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single chip ISDN-S2M-controller with B- and D-channel HDLC support
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independent read and write HDLC-Channels for 30 ISDN B-channels and one
ISDN D-channel
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transparent mode for each B-channel independently selectable
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FIFO-sizes configurable
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max. 31 HDLC frames (with 128k or 512k RAM) and 15 HDLC frames (with 32k
RAM) per FIFO
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1 - 8 Bit processing for subchannels selectable
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56 KBit/s restricted mode for U.S. ISDN lines selectable by software
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full I.431 ITU T1/E1 ISDN support in TE and NT mode for 3.3V and 5V supply
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B-channels for higher data rate combinable
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PCM128 / PCM64 / PCM30 interface configurable to interface MITEL STTM
bus (MVIPTM), Siemens IOM2TM or GCITM
for inter chip connections or external CODECs
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H.100 data rate support
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universal external bus interfacce configurable into PCI bus, ISA-PnP, PCMCIA
or microprocessor interface
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multiparty audio conferences switchable
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DTMF detection and generation on all B-channels
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Timer with interrupt and watchdog capability in processor mode
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CMOS technology 3V-5V
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PQFP 144 case
Applications
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ISDN PRI terminal adapters
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ISDN PABX for PRI
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ISDN LAN routers for PRI
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ISDN least cost routers for PRI
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ISDN test equipment for PRI
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