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<td BACKGROUND="bar-middle.jpg" HEIGHT=60><FONT FACE="Arial,Helvetica"><FONT SIZE="+1"><FONT COLOR="#FFFFFF">HFC-SP</FONT></FONT></FONT></TD>
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<P><br>
<b>The HFC-SP is not recommended for new projects.<br>
This chip is not available in a lead-free version.</b>
<br>
<H3>Functions</H3>
The HFC-SP 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-SP has an integrated ISA Plug and Play
and a PCMCIA interface. Also implemented is a PCM30 highway interface (which is able
to connect to many telecom serial busses) and a microprocessor interface.
<p>
<H3>Block Diagram</H3>
<IMG SRC="hfc-sp.gif" ALT="HFC-SP Block Diagram" HEIGHT=405 WIDTH=600>
<p>
<H3>Features</H3>
<UL TYPE=SQUARE>
<LI>
single chip ISDN-S-controller with B- and D-channel HDLC support</LI><p>
<li>
integrated S/T interface</li><p>
<LI>
independent read and write HDLC-channels for 2 ISDN B-channels and one
ISDN D-channel</LI><p>
<LI>
B1 and B2 transparent mode independently selectable</LI><p>
<LI>
FIFO-Depth:</LI>
B-channel: 4x 7.5 KByte, maximum 31 HDLC frames per FIFO <BR>
D-channel: 2x 512 Byte, maximum 15 HDLC frames per FIFO <p>
<LI>
56 KBit/s restricted mode for U.S. ISDN lines selectable by software</LI><p>
<LI>
full I.430 ITU S/T ISDN support in TE and NT mode for 3.3V and 5V power
supply</LI><p>
<LI>
B1+B2 HDLC mode</LI><p>
<LI>
PCM30 interface configurable to interface MITEL ST<SUP>TM</SUP> bus (MVIP<SUP>TM</SUP>),
Siemens IOM2<SUP>TM</SUP> or GCI<SUP>TM</SUP> for interface to U-chip or
external CODECs</LI><p>
<LI>
direct 8 bit ISA-PC bus interface with buffers for ISA-databus </LI><p>
<LI>
integrated ISA Plug and Play (Windows 95 Spec.)</LI><p>
<LI>
only 2 I/O addresses used on ISA-PC bus</LI><p>
<LI>
one of 7 interrupt channels on ISA-PC bus selectable by software</LI><p>
<LI>
integrated PCMCIA interface</LI><p>
<LI>
microprocessor interface compatible to Motorola bus and Siemens/Intel bus</LI><p>
<LI>
simple access to PCM30 interface for tone synthetisation</LI><p>
<LI>
timer with interrupt and watchdog capability in processor mode</LI><p>
<LI>
CMOS technology 3-5V</LI><p>
<LI>
case QFP 100</LI>
</UL>
<p>
<H3>Applications</H3>
<UL TYPE=SQUARE>
<LI>
<A HREF="a-isa-pc.htm">ISDN ISA PC cards</A></LI><p>
<LI>
<A HREF="a-pcmcia.htm">ISDN PCMCIA cards</A></LI><p>
</UL>
<p>
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<tr>
<td align="left" valign="top">
<H3>Linux Driver</H3>
A generic <a href="frame-linuxdriver.htm" target="_top">Linux driver</a> is available for HFC-SP.
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<img src="penguin.gif" width="60" height="70">
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<p>
<H3>Datasheet</H3>
<A HREF="main-datasheets.htm#hfc-sp">Get Datasheet</A>
<p>
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