Broadband Access - Client Side
DSL Solutions
High Speed ADSL2plus Chipset with
Integrated Wireless LAN and Voice
Conexant’s portfolio includes a comprehensive suite of semiconductor
solutions for broadband communications and the digital home.
The CX94615 is part of a new family of pin compatible CPE products from
Conexant designed to leverage common DSP firmware, software, and hardware
efforts across multiple applications from DSL bridges to wireless enabled DSL
integrated access devices (IADs). Other products in this family include the
CX94410 (ADSLplus Chipset with Enhanced INP) and the CX94610 (ADSLplus
Chipset with Integrated Wireless LAN). The chipset includes a highly integrated
analog front end (AFE) and a single-chip network processor with both integrated
voice and 802.11a/b/g MAC and baseband functionality. The CX94615 includes all
the interfaces required to enable feature-rich DSL CPE platforms.
An integrated 802.11 a/b/g MAC/baseband processor in the CX94615 interfaces to
Conexant’s CX5022x family of Wi-Fi® transceivers and RF front-end modules. The
optimized Wi-Fi architecture reduces the number of components and improves
manufacturing and quality with a repeatable and easily tunable Wi-Fi front end.
The CX94615 has been designed to accommodate advanced wireless features
such as push-button Wi-Fi Protected Setup (WPS) to easily and securely connect
to wireless devices, and full Smart Antenna support for reliable Wi-Fi coverage
with both data and multimedia streams.
The PCM and SPI bus on the CX94615 can be used to connect external codecs
and SLICs to the internal voice DSP allowing a 2FXS/1FXO VoIP solution, running
complex algorithms such as G.729ab, G.726 or G.711 on each channel. The
programmable architecture of the CX94615 allows for voice upgradeability to other
codecs and provides an upgrade path for emerging wide-band codec support.
Additional channels of voice can be added to the CX94615 using the Conexant
CX9041x family of voice co-processors. A cost effective FXO option is available
with integrated support for the field proven Conexant SmartDAA product family.
The CX94615 handles connections to an Ethernet PHY, Ethernet switch, or
HomePlug®/HomePNA™ through a 10/100 Ethernet MAC with MII interface.
Support for USB 2.0 host/device applications is available to attach peripherals such
as print servers, network attached storage, cameras, or other USB input devices.
Both parallel and serial flash (SPI) support is included in the CX94615 for maximum
design flexibility. The device interfaces to high speed SDRAM using a 16/32-bit
wide connection and includes additional GPIOs for further expansion.
The CX94615 incorporates a flexible dedicated DSP, which supports multiple DSL
standards including ADSL, ADSL2, ADSL2plus (Annexes A, B, M, I, J and L), using
proven firmware to reduce time-to-market, and is fully programmable to give
OEMs a secure, stable path for future upgrades and features.
At the center of the CX94615 chipset is a high performance ARM-based RISC
processor core, which supports industry standard operating systems such as
Linux® as well as Conexant’s full-featured, advanced ISOS® software suite.
To assist the processor, additional hardware engines, including a dedicated
Distinguishing Features
• Support for ADSL/ADSL2/ADSL2plus
• Integrated MAC/BB for high speed 802.11a/b/g
interfaces to Wi-Fi transceivers and
RF front end modules
• Integrated VoIP support for up to two channels
of G.711, G.726, G.729ab, and other codecs
• Integrated high performance ARM
network processor
• Integrated power regulators to simplify power
supply design and reduce overall system cost
• Support for USB 1.1 and 2.0 Host/Device
• High speed SDRAM interface
• Hardware VPN engine supporting DES, 3DES,
AES), SHA-1, SHA-256, and MD5 operations
• Open OS support for Linux, ISOS, and third
party stacks
• Support for extended impulse noise protection
(INP) for better IPTV quality
Part Number CX94615
High Speed ADSL2plus Chipset with
Integrated Wireless LAN and Voice
Broadband Access - Client Side
DSL Solutions
features such as IPTV quality of service (QoS), advanced firewall, and
DSLHome™, the DSL Forum’s initiative to standardize and simplify the
provisioning and configuration of the DSL gateway.
Wi-Fi processor, virtual private network (VPN) engine, and hardware
ATM SAR, are integrated to support compute intensive tasks. The
software solutions for the CX94615 include full support for advanced
Network Processor D/A Data
with ARM10,
Line Driver,
Rx Amp,
MAC/BB, Voice,
VPN engine,
Hard SAR
USB 1.1 Host/Device
USB 2.0 Host/Device
Power Regulators
Peripheral Bus
Loop Interface
A/D Data
10/100 Ethernet MII
Flash, Flash, Voice SmartDAA
Parallel SPI
CX94615 Block Diagram
Product Features
• Support for ADSL/ADSL2/ADSL2plus (G.992.1, G.992.2, T1.413, G992.3,
G.992.5) with optimized AFE designed to meet ADSL (TR-067) and ADSL2plus
(WT-100) requirements
• Integrated field-proven xDSL DSP core with Annex A, B, M, I, J, and L support
• Optimized and cost effective voice FXO support using Conexant’s
SmartDAA technology
• Expandable voice architecture to support up to 8 additional FXS voice
channels using the Conexant CX9041x co-processor family
• Integrated 10/100 Ethernet MAC with MII interface
• Easy to use HTML based graphical user interface (GUI) tools for
customization of user configuration web pages
• Modular IP stack with comprehensive networking protocol support
including advanced bridging and routing capabilities, dynamic host
configuration protocol (DHCP), point-to-point protocol over Ethernet
(PPPoE), point-to-point protocol over ATM (PPPoA)
• PPP and tunneling features and routing information protocol (RIP)
• Simple network management protocol (SNMP) agent and tools
• Stateful packet inspection (SPI) firewall and network address
translation (NAT) security solution
• Optimized power management with support for dying gasp
• ATM SAR engine supporting unspecified bit rate (UBR), constant bit
rate (CBR) and other service classes
• QoS features including support for extended INP
for better IPTV quality
• UPnP for seamless network interconnectivity
• Support for parallel and serial (SPI) flash
• Common customer development environment and tools across ADSL to
VDSL2 products
• Support for DSLHome including TR-064, TR-068, TR-069, TR-098,
TR-104, TR-106, TR-110, TR-111, TR-124, TR-133
• Reference designs available for rapid prototyping
• Memory and feature optimized binary and source software releases
for targeted deployments
• Pin compatible option to the CX94610 Family (ADSLplus Chipset with Integrated Wireless LAN, without voice) for platform flexibility
• Advanced Wireless features including WPS and Smart Antenna support
• MGCP and SIP stacks for VoIP
• Wireless/DSL/Voice Integrated Access Device (IAD)
Conexant Product Portfolio
The company’s broad portfolio of semiconductor products also includes client-side DSL and cable modem solutions, home network processors,
broadcast video encoders and decoders, digital set-top box components and systems solutions, and dial-up modems. In addition to its IEEE 802.11a/b/gcompliant WLAN chipsets, software, and reference designs, Conexant offers a suite of networking components that includes solutions for applications
based on HomePlug® and HomePNA™. Additional products include a complete line of asymmetric and symmetric DSL central office solutions, which
are used by service providers worldwide to deliver broadband data, voice, and video over copper telephone lines.
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logo are registered 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.
This material is provided AS IS and without
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Doc# PBR-201236