Product Brief
April 2002
CSP1037—AC-Link Soft Modem Chip Set
Features
■Two-chip AC-link modem solution
— CSP1037
— CSP1037B
■Data mode capabilities:
— ITU-T V.92*: 56000 bits/s—28000 bits/s
— ITU-T V.90*: 56000 bits/s—28000 bits/s
— ITU-T V.34: 33600 bits/s—2400 bits/s
— V.44, V.42, V.42bis, and
MNP
®Class 5 data
compression
— V.32terbo, V.32bis, and fallbacks
— High compression throughput due to parallel
access directly to the host PC
■FAX mode capabilities:
— ITI-T T.31 class 1 FAX
— ITU-T V.34: 33600 bits/s—2400 bits/s (TCM)
— ITU-T V.17: 14400 bits/s, 12000 bits/s,
7200 bits/s (TCM)
— ITU-T V.29: 9600 bits/s, 7200 bits/s (QAM)
— ITU-T V.27ter: 4800 bits/s, 2400 bits/s (DPSK)
— ITU-T V.21 Channel 2: 300 bits/s (FSK)
■Complete DAA includes the following:
— AC‘97/MC‘97 2.2 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
■Operating system support:
—
Windows
®98, 98SE, 2000,
NT
®4.0, ME,
XP
ÿ
— PC 2001compliant
— ACPI compliant
■Applications:
— Modem riser cards (MR)
— Modem daughter cards (MDC)
■Packaging options:
— SOIC: for standard MR and MDC applications
— TSSOP: for small foot print applications
Introduction
The CSP1037 chip set is an integrated direct access
arrangement (DAA) that provides a programmable
line interface to meet international telephone line
requirements. The CSP1037 chip set is available in
two 16-pin small outline packages (AC‘97 interface
on SCP and telephone line interface on
CSP1037B). The chip set eliminates the need for an
AFE, an isolation transformer, relays, optoisolators,
and a 2-wire to 4-wire hybrid. The CSP1037 chip set
dramatically reduces the number of discrete compo-
nents and cost required to achieve compliance with
international regulatory requirements. SCP complies
with AC‘97/MC‘97 Interface Specification Rev. 2.2.
The CSP1037 set is an ITU-T recommendation
V.92/V.44 solution. V.92 and V.44 have four innova-
tive features designed to improve modem perfor-
mance in the internet environment. The features are
as follows:
■Modem fast connect: faster start-up times.
■Modem on hold†: switch between modem and an
incoming phone call without losing the data con-
nections.
■PCM upstream: send data to central site at rates
approaching 48 kbits/s.
■Data compression enhancement focused on
today’s internet traffic.
* Actual speeds over U.S. telephone lines vary and are less than
56K, due to current FCC regulations and line conditions.
† Modem on hold functionality requires call waiting services.