CX11252 Conexant Systems, Inc., CX11252 Datasheet - Page 3

• Manufacturer Part Number: CX11252
• Description: Hsfi Pci Software Modem Device
• Manufacturer: Conexant Systems, Inc.

Bus
Bus
ModemXpert — Solving Problems
from the Start
Running in the background as a real-time system
tray application, ModemXpert automatically detects
communication problems and alerts the user. This
Windows-based diagnostic program comes as an option
with Conexant products and easily guides the user to a
quick resolution. Technical support calls are reduced and
in many cases avoided altogether. Customer returns are
also significantly reduced. ModemXpert enhances the
value of the modem by increasing customer satisfaction.
Fewer technical support calls and customer returns add
dollars to OEM profits.
PCI
PCI
Interface
System
System Side
System Side
DIB
Interface
Digital Isolation Barrier
Digital Isolation Barrier
1010101010101
1010101010101
PRI SEC
PRI SEC
SmartDAA
Line Side
Line Side
CX20434
Discretes
BOM
The SmartDAA Advantage
As a worldwide modem leader, Conexant has been
in a position to investigate many of the most common
user problems. The SmartDAA was designed to help
solve these problems.
Long Telephone Loops Suffering from Low-Voltage Signals
Modems which draw power from the telephone
line often suffer from reduced performance on long
telephone loops.
Power Line and Common Mode Noise
Unwanted Hum Noise on the Telephone Line
Incessant humming plagues the telephone
line when the modem is plugged in but not being used.
Lightning Surges
The modem system is disrupted or damaged due to
lightning surges.
International Regulations
PTT, Safety and EMC regulations vary widely and can
change often.
The SmartDAA Solution
SmartDAA uses system-wide power, guaranteeing
operation on any loop. Thus, low-voltage signals are not
negatively impacted by the power needs of the modem.
The SmartDAA Solution
The use of differential digital interface acts to cancel
such noises.
The SmartDAA Solution
SmartDAA minimizes the capacitance across the isolation
barrier to eliminate hum noise.
The SmartDAA Solution
SmartDAA designs have been shown to pass with
5KV surge pulses ranging from 2x10 uS to 10x1000 uS,
along with added protection from longitudinal surges.
Such problems have rarely been an issue for our
SmartDAA customers.
The SmartDAA Solution
Conexant has designed SmartDAA to be flexible and
easy to modify. It is fully configurable and allows many
changes and optimizations. Additionally, Conexant has a
solid network of relationships with PTT labs around the
world and a test laboratory accredited to TBR21 and
Advisory Notes.