BCM3341

BCM3341 PRODUCT ® Brief BROADBAND OF SINGLE-CHIP BCM3341 2-LINE VoIP IC FEATURES SUMMARY BENEFITS • The BCM3341 broadband VoIP DSP solution provides • The BCM3341 integrates: DSP and dual world • High-performance 240-MIPS a seamless interface with Broadcom's PacketCableTM cable and DSL modem ICs, providing the industry with the lowest cost, modular VoIP system solution. of integration: • •Highest levelreduces VoIP cable modem BOM Significantly • Significantly reduces part count, increasing reliability • Significantly reduces power consumption • Enhanced reliability of voice services through features 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 • Patented PacketSyncTM minimizes VoIP packet delays • Power management engine reduces overall consumption • DSL NTR clock recovery powerful DSP engine and voice algorithms deployed in millions of ports worldwide. to additional Broadcom silicon • •Seamless interfaceVoIP cable modem BCM3348 low-cost • 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 system solution including: • •Part of a comprehensivewith extensive documentation Low-cost reference design • Certifiable PacketCable 1.0 CablexChangeTM software • Proven DSLXchangeTM software BCM3341 PacketCableTM SDRAM Silicon Tuner Single-Chip BCM3348 BCM3360 BCM3370 Interface USB 1.1 10/100 Ethernet HI Bat Low Bat CLK Flash PS Dual SLICS BCM3341 Dual Line VoIP BCM3341 OVERVIEW JTAG (5) DSP Inteface (3) SRAM Interface (46) JTAG HVG Controller 1.8V Converter DSP Port Interface DSP/PB Interface 120-MHz 240-MIPS DSP Program SRAM Data SRAM Grant Sync Clock Generation Module Grant_Syncn (1) Reference In (4) HVG Control(4) 3.3V Hook detect (2) PCM HWY DSP/ISN Interface Timers ADM PCM HWY (4) DPI(19) APM 4-wire Differential Audio (8 + 4 = 12) SLIC Control (10) GPIO (1) INT/GPIO (5) External SLAC Control (5) Interrupt Control GPIO 2 ch BCM3341 PB Bridge MPI/ SPI 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. • 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. • Integrated DOCSISTM system clock synchronization provides clock synchronization in the entire voice path for a slip free voice. (CODECDSPDOCSISMACDOCSIS 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 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: info@broadcom.com Web: www.broadcom.com