B C M 1 1 1 5 F E A T U R E S
100-MHz MIPS32 CPU and 108-MHz DSP Support
In IP phone applications:
- H.323, H.248/Megaco, SIP and MGCP
- G.711, G.726, G.729A/AB/E, G.723.1/A, G.728, G.722.1 and
BroadVoice
TM
- Half- and full-duplex speakerphone operation
- Two- and three-channel conferencing (G.711 vocoder)
- Paging (via a G.711 channel)
In VoIP Gateway applications:
- H.323, H.248/Megaco, SIP and MGCP
- G.711, G.726, G.729A/AB/E, G.723.1/A and G.728
- Fax relay (T.38, V.17, V.29, V27ter)
- Two voice channels, or one voice channel and one fax
channel, and a third channel limited to G.711 voice
In PacketCable SMTA applications:
- PacketCable NCS
- G.711, G.729E, and G.728
- Two voice channels with complex vocoders
10/100BASE-T Ethernet MAC and PHY
Integrates support for Modified Link Pulse in-line power
specification
Compliant with 802.3af power over Ethernet standard
Provides auto-MDI/MDIX, enabling the use of straight or
crossover cables in either port
Wideband Audio CODECS
Enables support of emerging wideband vocoding standards
Glueless Interface to BCM4210/4100 HPNA MAC and
AFE devices
Enables low-cost, home-networking IP phone
S U M M A R Y O F B E N E F I T S
BCM1115 SINGLE-PORT ENTERPRISE IP PHONE CHIP
PRODUCT
PRODUCT
Brief
Brief
B C M 1 1 1 5
The BCM1115 is the most highly integrated silicon
solution for 1-Port Voice over IP Enterprise Phone and
Ethernet Residential Gateway applications.
The BCM1115 integrates:
100-MHz MIPS32 CPU (110 DMIPS) with 8 KB of I-cache
and 4 KB of D-cache
Superscalar 108 MHz ZSP DSP with dual-MAC (216 MIPS),
48 KB of instruction RAM and 32 KB of data RAM
One 10/100BASE-T Ethernet PHY with in-line power over
Ethernet support
Two wideband audio DACs and ADCs
9x9 keyscan controller
Ethernet status LED driver
TDM IOM-2
port
Two UARTs
Two high-speed serial ports
General purpose I/O
Interrupt control unit
DMA support unit
SDRAM interface
External Bus Interface
IEEE 1149.1 (JTAG)
0.18
process technology, 1.8/3.3 V
0.95W peak, 0.3-0.8W standby modes
256-pin PBGA package enables 4-layer PCB designs
Pin-compatible with BCM1101
BCM91101 Reference Platform
Complete Ethernet IP phone reference design in phone plastics
BCM91101SMTA Reference Platform
Ethernet Residential Gateway reference design
PacketCable SMTA reference design
H A R D W A R E P L A T F O R M S
The Broadcom BCM1115 is designed for use in cost-sensitive,
single Ethernet port, Enterprise IP Phone products. The
BCM1115 is complementary to the BCM1101 VoIP CPE engine,
which is ideally suited for higher-end, two-port Ethernet VoIP
products that require an integrated Ethernet switch and a second
Ethernet port.
Key modules integrated in the BCM1115 include:
MIPS32 100-MHz processor with 8K 2-way set associative I-
cache and a 4K 2-way associative D-cache. This MCU
supports the VoIP protocol stacks, jitter buffer management,
and application program. Programming is done in C, on top of
Broadcom's object-oriented signal processing API.
ZSP 108-MHz DSP with 48 KB of instruction RAM and
32 KB of data RAM. The DSP supports a wide range of
vocoders and a variety of telephony algorithms (e.g., DTMF
and Call Progress Tones.)
Analog codecs. Two DACs and two ADCs are integrated,
eliminating the need for an analog switch to allow the sharing
of a codec between multiple interfaces.
10/100BASE-T Media Access Controller and Transceiver. The
Media Access Controller (MAC) supports 802.1p
prioritization of voice packets and 802.1Q VLAN support for
segmenting physical networks into multiple logical networks.
The transceiver performs all of the functions for 100BASE-T
Ethernet in full- or half-duplex mode over Category (CAT) 5
twisted pair cabling and 10BASE-T Ethernet in full- or half-
duplex mode over CAT 3, 4, or 5 twisted-pair cable. The PHY
also supports auto-MDI/MDIX detection to allow the use of
any cable type. The transceiver integrates support for in-line
powering over Ethernet.
B C M 1 1 1 5 O V E R V I E W
MIPS32 CPU
+ 8K I-Cache
+ 4K D-Cache
ZSP DSP
10/100BT Ethernet MAC
802.1p/Q support
Uart 0
Timers
IPB
Bridge
Peripheral Bus
DMA
Arbiter
100 MHz CPU System Bus
32 KB
Data
Memory
SDRAM
External
Interrupt
Controller
Keypad Scan Controller
[or 18 GPIOs]
10BT/100BT
Auto-MDIX Phy
48 KB
Program
Memory
Watchdog
Timer
Ethernet LED
Driver
Flash/
EPROM
TDM
IOM-2
Port
High
Speed
Serial
Port 1
SDRAM
Interface
50 MHz
External Bus
Interface
ZSP JTAG
MIPS JTAG
Uart 1
Master
SPI Port
High
Speed
Serial
Port 2
18 GPIOs
Analog Processor Module
CODEC Channel 2
CODEC Channel 1
16 bit D/A
16 bit A/D
Phone: 949-450-8700
FAX: 949-450-8710
Email: info@broadcom.com
Web: www.broadcom.com
Broadcom
, the pulse logo 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
2003 by BROADCOM CORPORATION. All rights reserved.
1115-PB03-RI-06.13.03
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