博通BCM6368住宅区VDSL2-ADSL2+网关解决方案

博通(Broadcom)公司的BCM6368住宅区VDSL2-ADSL2+网关解决方案,它集成了VDSL2/ADSL2+收发器,AFE和高性能的多核MIPS32 CPU, ATM/PTM硬件SAR,硬件包处理加速器,吉比特以太网交换核以及四个10/100以太网PHY与两个GMII接口,两个USB主/从端口,多通道TDM/PCM总线,支持CardBus的并行扩展总线和mini-PCI. 收发器VDSL2/ADSL2+提供100Mbps的下行速率和50Mbps的上行速率,用于IPTV视频的增强的QoS,双等待成帧,ATM或PTM物理层,DSL通路通信以北及CPE遥控管理的嵌入运营通路.本文介绍了BCM6368的主要特性和优势以及方框图和基于BCM6368的VDSL2/ADSL2+ 多模式住宅区网关方框图.

BCM6368 Residential VDSL2/ADSL2+ Gateway Solution
The BCM6368 combines a VDSL2/ADSL2+ transceiver and AFE with a high-performance multicore MIPS32 CPU, ATM/PTM hardware SAR, hardware packet-processing accelerator, Gigabit Ethernet switch core with four 10/100 Ethernet PHYs and dual GMII interfaces, dual USB Host/Device, multichannel TDM/PCM bus, parallel expansion bus
supporting CardBus, and mini-PCI into a single high-performance monolithic device.

The VDSL2/ADSL2+ transceiver delivers 100 Mbps downstream and 50 Mbps upstream (100 Mbps upstream with external AFE), enhanced QoS for IPTV video, dual-latency framing, ATM or PTM physical layer, DSL channel bonding, and embedded operations channels for remote management of the CPE.

Powered by the advanced dual-core VIPER MIPS32 CPU and hardware packet processing accelerator, the BCM6368 VDSL2/ADSL2+ modem performs wirespeed bridging, routing, encryption, and decryption on all packet sizes between the WAN and the various LAN interfaces. The MIPS32 architecture-compliant VIPER CPU also supports custom application development with industry-standard EJTAG debuggers, toolchains, and development environments.

A full-featured ATM/PTM hardware SAR supports advanced QoS for multiple VCs in ATM mode and multiple flows in PTM mode. The embedded USB host/device and Gigabit Ethernet switch provide a widerange of connectivity options to PCs, printers, storage, video devices, Ethernet switches, and Bluetooth devices.

The expansion bus supports networking devices, such as Broadcom’s IEEE 802.11a/b/g/n Wi-Fi chipsets, via CardBus and mini-PCI and generally available MoCA, HomePNA, and HomePlug devices as well as other video, storage, and security devices.

For voice applications, Broadcom’s DSLxChange VoIP software provides a mature, field-hardened and reliable solution. A multichannel TDM/PCM interface is provided for connectively to external SLAC and SLIC devices.
The BCM6368 enables the development of a completely integrated VDSL2/ADSL2+ IAD with advanced voice and application capabilities and unmatched functional integration.
BCM6368主要特性:

Highly integrated, single-chip VDSL2/ADSL2+ integrated access device (IAD) solution with seamless, multiuser support for 10/100/ 1000 Ethernet, USB 2.0 host and devices, ISDN, DECT, multichannel VoIP, and IEEE 802.11a/b/g/n wireless home networking
VDSL2/ADSL2+ auto-detecting, G.933.2 (G.vdsl2), G.992.1,G.992.2, G.992.3, G.992.5, and T1.413-compliant DSL transceiver
Highly optimized concurrent multicore MIPS32® CPU with MMU, TLB support, and VoIP extensions
Hardware ATM/PTM SAR, advanced ATM VC and PTM flow management, traffic shaping, channel bonding, and Quality of Service (QoS)
Integrated hardware packet processing accelerator with support of wirespeed small packet bridging, routing, packet QoS, and IPSec
Integrated Gigabit Ethernet switch core with four 10/100 Auto-MDIX Etherent PHYs and two GMII/RGMII/MII interfaces
Concurrent dual USB hosts and/or device interfaces with integrated transceiver
Multiformat 16-/32-bit peripheral expansion bus
Serial and parallel Flash interfaces with DDR support
Extensive on-chip power management, EJTAG, GPIO, UART, NAND Flash interface, and OTP memory
35 mm x 35 mm package with 1.0 mm pitch for reduced PCB design complexity
BCM6368优势:
High-performance VIPER CPU and special hardware accelerator support simultaneous small packet routing at wirespeed, multichannel VoIP, multiport Ethernet switching, IEEE 802.11b/g/n wireless networking, packet encryption/
decryption, and advanced applications, such as remote management via TR-069.
Integrated VoIP processing, using the widely deployed and fieldhardened
DSLxChange software, eliminates design complexity and cost.
Embedded Gigabit Ethernet switch core with four 10/100 Auto- MDIX Etherent PHYs and two GMII/RGMII/MII interfaces enhances system performance and reduces system cost.
Concurrent dual USB host or device interfaces enable simple Plug and Play connection of multiple PCs, printers, storage, web cameras, and other peripheral devices.
High-speed external expansion bus with support for CardBus and mini-PCI provides a seamless connection to onboard or module-based peripheral devices, such as IEEE 802.11a/b/g/n, MoCA, HomePlug®, or HomePNA devices.
Industry-standard multichannel TDM/PCM interface for glueless connectivity to SLAC and SLIC components for FXS/ FXO support.
Unified memory architecture supports all embedded applications including DSL, Routing, VoIP, Remote Management, Security, Ethernet, Bluetooth®, DECT, and Wi-Fi®.
Support for industry-standard toolchains and operating systems including Linux®, Windows CE®, VxWorks®, and eCOS®.
Consistent, field-hardened software platform across all Broadcom® CPE gateway devices.



图1.BCM6368系统方框图



图2.基于BCM6368的VDSL2/ADSL2+ 多模式住宅区网关方框图