BCM3341 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – SINGLE CHIP 2 LINE VOLP BROADBAND IC

BCM3341 OVERVIEW
HVG Control(4)
3.3V
DPI(19)
JTAG (5)
DSP
SRAM
Inteface (3) Interface (46)
JTAG
HVG
Controller
1.8V
Converter
DSP Port
Interface
BCM3341
120-MHz
240-MIPS DSP
DSP/ISN
Interface
Timers
Interrupt
Control
DSP/PB
Interface
PB Bridge
Program
SRAM
Data SRAM
Grant Sync
Clock
Generation
Module
PCM
HWY
ADM
APM
GPIO
2 ch
MPI/
SPI
Grant_Syncn (1)
Reference In (4)
Hook detect (2)
PCM HWY (4)
4-wire
Differential
Audio (8 + 4 = 12)
SLIC Control (10)
GPIO (1)
INT/GPIO (5)
External
SLAC
Control (5)
The BCM3341 offers the industry a highly integrated, cost
effective approach to developing PacketCable^TM 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 PacketSync^TM, 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 DOCSIS^TM 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
Broadcom^®, the pulse logo, PacketSync^TM, CablexChange^TM, 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: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.broadcom.com