bcm1101 Broadcom Corp., bcm1101 Datasheet - Page 2

• Manufacturer Part Number: bcm1101
• Description: Bcm1101 - Enterprise Ip Phone Chip
• Manufacturer: Broadcom Corp.

The Broadcom BCM1101 represents a new level of integration for
feature-enhanced Ethernet IP phone products.
Key modules integrated in the BCM1101 include:
• MIPS32 150-MHz processor with 8K two-way set associative I-
• ZSP 108-MHz DSP with 48-KB instruction and 32-KB data RAM.
• Analog codecs. Three ADCs and DACs are integrated, eliminating
Broadcom
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respective owners.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
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© 2006 by BROADCOM CORPORATION. All rights reserved.
1101-PB10-R
cache and a 4K two-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.
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).
the need for an analog switch to allow the sharing of a codec between
multiple interfaces.
®
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03/08/06
Master SPI
Port
Watchdog
Auto-MDIX PHY
Auto-MDIX PHY
10/100BASE-T
10/100BASE-T
Timer
Analog Processor Module
®
CODEC Channel 1
CODEC Channel 2
16-bit D/A
16-bit A/D
UART 0
CODEC Channel 3
®
, the Connecting everything logo, and BroadVoice
Timers
BCM1101 VoIP Ethernet CPE Engine
UART 1
Peripheral Bus
18 GPIOs
MIPS JTAG
ZSP JTAG
48 KB of
Program
32 KB of
Memory
Memory
port 0
port 1
Data
Ethernet LED
O V E R V I E W
Driver
Interrupt Controller
External
Three-Port
Ethernet
Switch
Buffer Memory
MIPS32 CPU
+ 8K I-Cache
+ 4K D-Cache
64 KB of
ZSP DSP
• 10/100BASE-T Ethernet switch, media access controllers, and
The BCM1101 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.
®
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, 802.1Q VLAN support for
segmenting physical networks into multiple logical networks, 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
transceivers also integrate support for in-line powering over Ethernet.
port 2
Keypad Scan Controller
DMA Arbiter
[or 18 GPIOs]
Bridge
IPB
External Bus
(IOM-2)
Speed
Speed
Serial
Port 2
Serial
Port 1
High
High
TDM
Port
Interface
Interface
SDRAM
50-MHz
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
EPROM
SDRAM
Flash/