|
Functions
The HFC-S USB is an ISDN S/T HDLC basic rate controller for single-chip
USB applications.
The S/T interface, HDLC-controllers, FIFOs and the USB interface are
integrated in the HFC-S USB. It only requires an external EEPROM to store
the USB configuration data. The USB protocol is implemented in hardware.
Code development for a microcontroller is not necessary. A PCM30 interface
is also implemented which is able to connect to many telecom serial busses.
CODECs are usually connected to this interface. All ISDN channels (2B+1D)
and the PCM interface are served fully duplex by the 8 integrated FIFOs.
The integrated 8 bit auxiliary port enables the HFC-S USB to be used
as USB bridge.
Features
-
single chip ISDN-S-controller with B- and D-channel HDLC support
-
independent read and write HDLC-channels for 2 ISDN B-channels and one
ISDN D-channel
-
B1- and B2-channel transparent mode independently selectable
-
integrated FIFOs for B1, B2, D and PCM
-
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
-
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
-
integrated full speed 12 MBps USB interface (USB specification 1.1 compliant)
-
no microcontroller, no firmware required
-
integrated auxiliary port (USB bridge)
Applications
|
Homepage
E-Mail