LU97—AC-Link Soft Modem Chip Set
1.
2.
Windows
is a registered trademark of Microsoft Corporation.
Actual speeds over U.S. telephone lines vary and are less than 56K, due to
current FCC regulations and line conditions.
MNP
is a registered trademark of Microcom, Inc.
EIA
is a registered trademark of Electronic Industries Association.
3.
4.
FEATURES
I
Operating system support:
—
Windows
1
95, 98, 2000
— PC ‘99 compliant
— ACPI compliant
I
High-speed data mode capabilities:
— ITU-T V.90 data rates 28000 bits/s—
56000 bits/s
2
— Ultrahigh compression throughput due to
parallel access directly to the host PC
— ITU-T V.34 extended rates: 33600 bits/s—
2400 bits/s V.32terbo, V.32bis, and fallbacks
— TIA/
EIA
602 standard for AT command set
— V.42 error correction (LAPM and
MNP
3
)
— V.42bis and
MNP
Class 5 data compression
I
FAX mode capabilities:
— ITU-T V.17, V.29, V.27ter, and V.21 Ch 2
— TIA/
EIA
4
578 Class 1 FAX
I
Video-ready modem interface (VRM) V.80
I
Complete DAA includes the following:
— AC‘97/MC‘97 2.1 compliant
— International line interface
— Compliant with FCC, CTR21, JATE, and other
PTTs
— 3.3 V to 5 V power supply
— 2400 V isolation
— Integrated ring detector
— Integrated analog front end (AFE)
— 2-wire to 4-wire hybrid
— Low-power standby mode
— Low-profile SOIC packages
I
Applications:
— Modem riser cards
— Mobile daughter cards
INTRODUCTION
The LU97 chip set is an integrated direct
access arrangement (DAA) that provides a
programmable line interface to meet
international telephone line requirements.
The LU97 chip set is available in two 16-pin
small outline packages (AC‘97 interface on
CSP1037 and telephone line interface on
CSP1037A/B). The chip set eliminates the need
for an AFE, an isolation transformer, relays,
opto-isolators, and a 2-wire to 4-wire hybrid.
The LU97 chip set dramatically reduces the
number of discrete components and cost
required to achieve compliance with
international regulatory requirements.
The CSP1037 complies with AC‘97/MC‘97
Interface Specification Rev. 2.1.