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<td BACKGROUND="bar-middle.jpg" HEIGHT=60><FONT FACE="Arial,Helvetica"><FONT SIZE="+1"><FONT COLOR="#FFFFFF">HFC-S+</FONT></FONT></FONT></TD>
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<P><br>
<b>The HFC-S+ is not recommended for new projects. Please use <A HREF="frame-xhfc-1su.htm" target="_top">XHFC-1SU</A> instead.</b>
<br>
<H3>Functions</H3>
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.
<p> <a href="http://undefiniert"></a>
<H3>Block Diagram</H3>
<IMG SRC="hfc-spl.gif" ALT="HFC-S+ Block Diagram" HEIGHT=392 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-channel 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 data bus</LI><p>
<LI>
one of 6 interrupt channels on ISA-PC bus selectable by software</LI><p>
<LI>
I/O address selectable by software</LI><p>
<LI>
only 2 I/O addresses used on PC-ISA bus</LI><p>
<LI>
microprocessor interface compatible to Motorola bus and Siemens/Intel bus</LI><p>
<LI>
simple DMA 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>
ISDN PC cards (we recommend to use the <A HREF="frame-hfc-sp.htm" TARGET="_top">HFC-SP</A>
instead because of its integrated ISA PnP)</LI><p>
<LI>
<A HREF="a-ta.htm">ISDN terminal adapters</A></LI><p>
<LI>
<A HREF="a-mini-pabx.htm">ISDN mini PABX</A></LI><p>
<LI>
<A HREF="a-nt.htm">ISDN smart NT</A></LI><p>
<LI>
ISDN modems (like <A HREF="a-usb.htm">USB devices</A>)</LI>
</UL>
<p>
<p>
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<H3>Linux Driver</H3>
A generic <a href="frame-linuxdriver.htm" target="_top">Linux driver</a> is available for HFC-S+.
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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-spl">Get Datasheet</A>
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