BCM1115 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – SINGLE PORT ENTERPRISE IP PHONE CHIP

BCM1115 OVERVIEW
Master
SPI Port
Uart 0
Uart 1
18 GPIOs
External
Interrupt
Controller
Keypad Scan Controller
[or 18 GPIOs]
Peripheral Bus
Watchdog
Timer
Timers
MIPS JTAG
MIPS32 CPU
+ 8K I-Cache
+ 4K D-Cache
Analog Processor Module
CODEC Channel 2
CODEC Channel 1
16 bit D/A
16 bit A/D
48 KB
Program
Memory
32 KB
Data
Memory
ZSP JTAG
ZSP DSP
10BT/100BT
Auto-MDIX Phy
10/100BT Ethernet MAC
802.1p/Q support
IPB
Bridge
High
Speed
Serial
Port 2
High
Speed
Serial
Port 1
TDM
IOM-2
Port
50 MHz
External Bus
Interface
SDRAM
Interface
Ethernet LED
Driver
DMA
Arbiter
Flash/
EPROM
SDRAM
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.
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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
Phone: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.broadcom.com