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Product Brief
February 2002
DRAFT
SV92P PCI Soft Modem Chip Set
Features
I
Two-chip 3.3 V soft modem solution with an
integrated 5 V tolerant PCI interface
I
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.32bis, and fallbacks
— V.42 and
MNP
error correction (LAPM)
—
V.44, 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
—
ITU-T T.31 Class 1 FAX
I
Compatible with transformer-based and silicon
DAA circuits:
—
High-precision sigma-delta codec (CSP1034C)
—
Line-powered silicon DAA (CSP1035A)
I
Bit I/Os to support domestic and international
DAAs
I
Supports standard PCI and mini PCI buses with
PCI version 2.2
I
Ideal for mobile computing and high-performance/
low-power applications
I
Flexible power management modes
I
Common driver across multiple platforms
I
Operating system support:
—
Windows98, Windows2000, WindowsME
,
and Windows XP
—
PC 2001 compliant
Introduction
The SV92P chip set is Agere Systems
’
latest soft
modem solution. The chip set features the new
SV92P PCI interface device, the CSP1034C line
codec or the CSP1035A data access arrangement
(DAA), and a soft modem stack.
The SV92P device provides an interface between the
host system running the soft modem stack and line
codec or DAA. The SV92P defers all modem protocol
processing to the soft modem stack and functions
primarily as a buffering interface.
SV92P is both pin and footprint compatible with the
Mars 3 host-based controller modems. Designs
based on the DSP1648x products are easily
migrated to the SV92P with the addition of the soft
modem stack.
The soft modem stack performs all of the modem
protocol processing including support for ITU-T rec-
ommendation V.92/V.44. V.92 and V.44 have four
innovative features, designed to improve modem
performance in the internet environment. The fea-
tures are as follows:
I
Modem fast connect: faster start-up times on rec-
ognized connections.
I
Modem on hold
: switch between modem and an
incoming phone call without losing the data con-
nections.
I
PCM upstream: send data to central site at rates
approaching 48 kbits/s.
I
Data compression enhancement focused on
todays internet traffic.
* Due to FCC limitations, speeds of 53 kbits/s are the maximum
permissible transmit power levels during download transmis-
sion. Actual data speeds will vary depending on the line
conditions.
Modem on hold functionality is dependent on country specific
call waiting services. Not all countries are supported.