ST5481 Datasheet, PDF (1/18 Pages) STMicroelectronics – L.O.U.I.S - LOW COST USB ISDN SOLUTION

ST5481
L.O.U.I.S - LOW COST USB ISDN SOLUTION
PRODUCT PREVIEW
HARDWARE FEATURES
S/T ISDN Interface
s SUPPORTS OSI LEVEL 1 IN CONFOR-
MANCE WITH UIT-T I.430 FOR BASIC
ACCESS AT S AND T INTERFACES (ETSI
300012/ANSI T1.605)
s LINE INTERFACE TRANSFORMER DIRECT
DRIVE
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 THRESHOLD AND
EQUALIZER
USB Interface
s USB 1.0 SPECIFICATION FULL COMPLI-
ANCE, 1.1 SPECIFICATION COMPATI-
BILITY (1.1 POWER MANAGEMENT COM-
PLIANCE), 12 MBps FULL SPEED
s ON-CHIP USB TRANSCEIVER WITH
DIGITAL PLL
s 6 ISOCHRONOUS ENDPOINTS FOR B1,
B2, D CHANNELS DATA.INTERRUPT
ENDPOINT FOR I430
s ISDN PROTOCOL AND DATA.CONTROL
ENDPOINT FOR USB STANDARD PLUS
VENDOR SPECIFIC REQUEST
s COMMUNICATION DEVICE CLASS AND
VENDOR REQUESTS
s BUS OR SELF POWERED APPLICATION
(PIN PROGRAMMABLE)
s ONNOW POWER MANAGEMENT (D0,D2,D3)
SUSPEND MODE COMPLIANCE
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 in-
cluded 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.
TQFP48
ORDERING NUMBER:
ST5481 TQF7
October 2000
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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