BCM1100 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – VOICE OVER IP ETHERNET CPE ENGINE

BCM1100 OVERVIEW
Master SPI
Port
Uart 0 Uart 1
18 GPIOs
Ext.
Interrupt
Controller
Peripheral Bus
Keypad
Scan
Controller
IPB Bridge
Watchdog
Timer
Timers
Analog Processor Module (APM)
CODEC Channel 3
CODEC Channel 2
CODEC Channel 1
14 bit D/A
14 bit A/D
MIPS JTAG
ZSP JTAG
48 KB
Program
Memory
32 KB
Data
Memory
MIPS32 CPU
+ 4K I-Cache
+ 4K D-Cache
ZSP DSP
10BT/100BT
Auto-MDIX Phy
10BT/100BT
Auto-MDIX Phy
port 0
port 1
3 Port
Ethernet
Switch
port 2
Ethernet LED 64KB Buffer
Driver
Memory
High Speed
Serial Port 2
High Speed
Serial Port 1
TDM Port
50 MHz
External Bus
Interface
SDRAM
Interface
DMA Arbiter
Flash/
EPROM
SDRAM
BCM1100 VoIP Ethernet CPE Engine
The Broadcom BCM1100 represents a new level of integration
for enterprise Ethernet IP Phone and small gateway applications.
Key modules integrated in the BCM1100 include:
• MIPS32 100 MHz processor with 4K 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 140 MHz DSP with 48K instruction and 32K data
RAM. The DSP supports a wide range of vocoders,
acoustic echo cancellation for full-duplex speakerphone,
fax modems, and a variety of telephony algorithms (e.g.,
DTMF and Call Progress Tones).
• Analog Codecs. Three ADCs and DACs are integrated,
eliminating the need for an analog switch to allow the
sharing of a codec between multiple interfaces.
• 10/100BASE-T Ethernet Switch, Media Access
Controllers, and Transceivers. The three-port Ethernet
switch integrates three full-duplex capable Media Access
Controllers (MACs), a Serial Management Port, an
address resolution engine, a non-blocking switch
controller, 64K of internal switch memory, 802.1p
prioritization for voice packets, and a set of Management
Information Base (MIB) statistics registers. The two
transceivers perform all of the functions for 100Base-T
Ethernet in full- or half-duplex mode over Category
(CAT) 5 twisted pair cable and 10BASE-T Ethernet in
full- or half-duplex mode over CAT 3, 4, or 5 twisted
pair cable. They support Auto MDI/MDIX detection to
allow the use of any cable type in either port.
The BCM1100 represents the first silicon solution that integrates
all the key silicon components of an Ethernet IP Phone into a
single device, thereby reducing the overall system cost and
complexity of Enterprise IP Phone products, while at the same
time increasing their voice quality and the reliability of the
network to which they are attached.
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subsidiaries in the United States and certain other countries.
IOM-2 is a registered trademark of Infineon Technologies AG.
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Email: [e-mail]
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© 2000 BROADCOM CORPORATION
1100.PB03-R-1.25.01
BROADCOM CORPORATION
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Irvine, California 92619-7013