BCM3341 PRODUCT Brief ® SINGLE-CHIP B C M 3 3 4 1 2-LINE VoIP BROADBAND S U M M A R Y F E AT U R E S • The BCM3341 broadband VoIP DSP solution provides O F B E N E F I T S level of integration: • •Highest Significantly reduces VoIP cable modem BOM a seamless interface with Broadcom's PacketCableTM cable and DSL modem ICs, providing the industry with the lowest cost, modular VoIP system solution. • Significantly reduces part count, increasing reliability • Significantly reduces power consumption • Enhanced reliability of voice services through BCM3341 integrates: • The • High-performance 240-MIPS DSP and dual world powerful DSP engine and voice algorithms deployed in millions of ports worldwide. linecard programmable codec • Internal memory supports G.711+ 1 complex vocoder (2 lines of either/or simultaneously) • Supports all ITU G.7xx narrow-band vocoders, plus T.38 fax relay • Complex vocoder, fax and modem relay memory Expansion bus (128K×16) memory expansion (32K×16, or 64K×16) • World linecard support • G.168 (2000) compliant echo canceler • Extensive chip power management • Integrated HVG circuit switch mode controller Eliminates dual switching power controller for Low Bat(–24V) and Hi Bat(–48V) power supplies • Supports both narrow-band BroadVoice™16 and wideband BroadVoice™32 • Integrated battery sensing • Single 3.3V power supply • 0 to 70ºC operation • Enhances voice quality through advanced system features • Patented PacketSyncTM minimizes VoIP packet delays • Power management engine reduces overall consumption • DSL NTR clock recovery interface to additional Broadcom silicon • •Seamless BCM3348 low-cost VoIP cable modem • BCM3360 VoIP residential gateway and MDU apps • BCM3370 wireless VoIP residential gateway • BCM6345 low-cost VoIP DSL modem • BCM6350 xDSL communications processor • BCM1101, SMTA and IP phone solution of a comprehensive system solution including: • •Part Low-cost reference design with extensive documentation • Certifiable PacketCable 1.0 CablexChangeTM software • Proven DSLXchangeTM software BCM3341 PacketCableTM SDRAM Silicon Tuner IC USB 1.1 Single-Chip BCM3348 BCM3360 BCM3370 10/100 Ethernet HI Bat Interface Low Bat CLK Flash BCM3341 Dual Line VoIP PS Dual SLICS B C M 3 3 4 1 JTAG (5) DSP Inteface (3) O V E R V I E W SRAM Interface (46) JTAG HVG Control(4) HVG Controller 3.3V 1.8V Converter DPI(19) DSP Port Interface BCM3341 120-MHz 240-MIPS DSP Program SRAM Grant Sync Grant_Syncn (1) Data SRAM Clock Generation Module Reference In (4) Hook detect (2) PCM HWY ADM PCM HWY (4) Timers APM 4-wire Differential Audio (8 + 4 = 12) Interrupt Control GPIO 2 ch SLIC Control (10) GPIO (1) INT/GPIO (5) PB Bridge MPI/ SPI DSP/ISN Interface DSP/PB Interface The BCM3341 offers the industry a highly integrated, cost effective approach to developing PacketCableTM or DSL VoIP solutions for the delivery of primary or secondary line telephony. The BCM3341 provides a seamless interface with multiple Broadcom cable, DSL and IP phone products. This includes the BCM3348, BCM3360 and BCM3370 cable modem IC solutions, the BCM6350, BCM6352, BCM6345 DSL IC solutions, and the BCM1101 SMTA and IP phone solutions. Key modules integrated into the BCM3341 include: • 240-MIPS VoIP DSP with patented PacketSyncTM, supports 2 primary lines of compressed voice packets plus T.38 fax relay. It can simultaneously support two secondary lines of G.711 for various class of service such as three way calling and caller ID. External SLAC Control (5) • Integrated DOCSISTM system clock synchronization provides clock synchronization in the entire voice path for a slip free voice. (CODEC<>DSP<>DOCSISMAC<>DOCSIS CMTS) Solutions without such synchronization incur voice packet slips that lower the quality of voice calls. • Complex vocoder, fax and modem relay memory expansion bus (128K×16 memory expansion (32K×16, or 64K×16)). • PCM IOM2 interface for connecting external devices supporting applications such as DECT wireless handsets. Ordering Information BCM3341 Single-Chip 2-line VoIP Broadband IC • Integrated 2-line FlexiVoice™ voice codec with individual line programmable filter coefficients, providing optimum performance for both V.92 modem and voice applications. • Grant synchronization engine: A voice packetization scheduler that synchonizes the voice packets with the DOCSIS grant slots, potentially saving 10–20 ms of VoIP packet delay, providing higher voice quality. Broadcom®, the pulse logo, PacketSyncTM, CablexChangeTM, BroadVoice™, FlexiVoice™, and Connecting everything® are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners. ® BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2002 by BROADCOM CORPORATION. All rights reserved. 3341-PB01-403-R 11.20.02 Phone: 949-450-8700 FAX: 949-450-8710 Email: [email protected] Web: www.broadcom.com