ST5481

ST5481 L.O.U.I.S - LOW COST USB ISDN SOLUTION PRODUCT PREVIEW HARDWARE FEATURES S/T ISDN Interface s COMMUNICATION DEVICE CLASS AND VENDOR REQUESTS s SUPPORTS OSI LEVEL 1 IN CONFORMANCE WITH UIT-T I.430 FOR BASIC ACCESS AT S AND T INTERFACES (ETSI 300012/ANSI T1.605) s BUS OR SELF POWERED APPLICATION (PIN PROGRAMMABLE) s ONNOW POWER MANAGEMENT (D0,D2,D3) SUSPEND MODE COMPLIANCE s LINE INTERFACE TRANSFORMER DIRECT DRIVE s PIN PROGRAMMABLE HIGH/LOW POWER USB DEVICE REGISTRATION, WAKE-UP CAPABILITY, USB DEVICE IDENTIFICATION GENERAL – USB hot plug and play interface. – Control access and interrupt handling provided through the USB interface. – All FIFOS and FIFOS management needed included for USB/ISDN data processing. – Internal PLL to generate the USB 48MHz clock from a 15.36MHz crystal. – Internal regulator for 3.3V generation from USB bus 5V. – 48 pin TQFP package. – 0.35 micron HCMOS 6 process. DESCRIPTION ST5481 combines ISDN link access and an USB interface to allow a very simple USB/ISDN modem design with all ISDN protocols and upper applications processed into the HOST PC. s FULL-DUPLEX TRANSMISSION AT 192KBps ON SEPARATE TRANSMIT AND RECEIVE TWISTED PAIRS USING ALTERNATE MARK INVERSION (AMI) LINE CODING s 2 B CHANNELS AT 64KBps EACH PLUS 1 D CHANNEL AT 16KBps s ALL I.430 WIRING CONFIGURATIONS SUPPORTED INCLUDING PASSIVE BUS FOR TE’S DISTRIBUTED POINT TO POINT AND POINT TO MULTIPOINT s MULTIFRAME SUPPORT s ANALOG PART: INCLUDED WITH ADAPTIVE DETECTION THRESH...