Data Modems
Soft Modems
CXHSF-USB Modem Device
V.90/V.92 Chipset for USB
Conexant’s broadband communications portfolio includes a comprehensive
suite of semiconductor solutions that enable the digital home and information
network. Conexant’s CX06836 Host-Software Processed Modem Device is a
versatile product designed to operate using the USB Interface Device (UID)
and offers an inexpensive easy to use an external modem. Compact enough
to fit inside a dongle connector, the CX06836 modem device operates with
PSTN telephone lines worldwide, and supports V.90/V.92 analog receive
data up to 56 kbps with V.44 compression, V.17 analog fax to 14.4 kbps and
remote Telephone Answering Machine (TAM) operation.
The V.92 dial-up modem specifications include features that provide a better
user experience when connecting to the Internet: quick connect, modem-onhold™, and PCM Upstream. Quick connect shortens the modem handshake
sequence to make a connection 30% to 40% faster then before. Modem-onhold allows a user to receive an incoming call while staying connected to the
Internet. PCM Upstream boosts the data rates to reduce upload time for large
files and email attachments.
Consisting of a Conexant CX06836-11 UID packaged in a 100-pin Thin Quad
Flat Pack (TQFP), the CX06836 modem device operates with a +5V power
from the USB bus — eliminating the need for an external power supply. A
downloadable architecture allows updating of executable code. Modem data
pump and controller functions are handled by the Pentium MMX-compatible
CPU rather than dedicated hardware, using supplied host-signal processing
modem software.
The supported V.44 mode is an efficient data compression that significantly
increases throughput, reducing the download time for the types of files
associated with Internet use. Thus, Web pages, graphics, images, audio and
document files can achieve a 6-to-1 compression ratio for an overall effective
data throughput rate of up to 300 kbps on a 56K connection. Non-errorcorrecting mode is also supported. Conexant supplies USB modem drivers for
Windows 98 SE/ME/2000/XP, which includes support for power management
features that allow the PC to go into suspend mode, and then resume when
there is a wake-up event.
CX06836 Features
• Supports all V.92 features
(Quick connect, Modem-on-hold™,
PCM Upstream)
• V.44 compression protocol to
increase data throughput
• Ease-of-use via USB Plug and Play
• Compact enough for a dongle-type
• Supports Windows 98 SE/ME/2000/XP
In Telephone Answering Machine (TAM) mode, 4-bit, 8-bit or 16-bit per
sample coding schemes at 8 KHz sample rates provide flexible format
compatibility and allow for efficient storage of voice/audio. Voice annotation,
recording from and playback to the telephone line are supported applications.
Fax Group 3 send and receive are supported up to 14.4 kbps with T.30
protocol. The complete reference design kit is available in electronic form to
minimize application design time and costs.
Part Number CX06836
CXHSF-USB Modem Device
Data Modems
Soft Modems
CX06836 Modem Simplified Interface Diagram
CX06836 Features
• Receive rates up to 56 kbps, send rates up to 48 kbps
in V.92 mode
- ITU-T V.92, V.90, K56flex, V.34, V.32bis, V.32, V.22bis,
V.22, V.23 and V.21 Bell 212A and Bell 103
- Quick connect
- Modem-on-hold
- PCM Upstream
- V.250 and V.251 commands
• Data Compression (DC) and Error Correction (EC)
- V.44 DC for optimal downloading from Internet
- V.42bis and MNP 5 DC
- V.42 LAPM and MNP 2 – 4 EC
• Fax modem with send and receive rates up to 14.4 kbps
- V.17, V.29, V.27 ter and V.21 Ch. 2
- EIA/TIA Class 1 and T.31 Class 1.0 commands
- Telephony/TAM
- V.253 commands
- 8-bit µ-Law/A-Law coding (G.711) and 8-bit/16-bit linear coding
- 8 KHz sample rate
© 2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the
Conexant logo are trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
• Single configuration profile stored in host
• Data/Fax call discrimination
• Host software signal processing
• System compatibility
- Windows 98 SE/ME/2000/XP
General Information:
U.S. and Canada: (800) 854-8099
International: (949) 483-6996
Headquarters – Newport Beach
4311 Jamboree Rd, P.O. Box C
Newport Beach, CA 92660-3095
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
• CX06836 hardware
- Full-speed (12 MHz) USB interface
• Suspend/resume
• Vendor-specific descriptions
• Bus-powered USB device
• LED driver outputs
- Internal modem codec
- Analog receive/transmit data and discrete
control/status signal interface to DAA
- +5V to +3.3V regulators on-chip
- Packaged in 100-pin TQFP
Order# 101834B