bcm3255 Broadcom Corp., bcm3255 Datasheet
bcm3255
Manufacturer Part Number
bcm3255
Description
Bcm3255 - Single-chip Front-end Docsis 2.0 Ic For Hd Dvr Set-tops And Media Centers
Manufacturer
Broadcom Corp.
Datasheet
1.BCM3255.pdf
(2 pages)
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Three QAM in-band demodulators
OOB demodulator for support of DVS 178 and DVS 167
800-DMIPS dual-treaded R4K MIPS processor
DOCSIS
bonding
DOCSIS and channel bonding code supplied by Broadcom
DAVIC MAC
USB 2.0 MAC and PHY (full data rate USB supported)
PCI
Boot from unified back-end Flash (that is, Flash is connected to
a BCM7038, BCM7400, or BCM7401)
Ethernet MAC and PHY
BOM savings include integrated regulators, VCX0, and
upstream amplifier
IPv6-supported
INTEGRATED FRONT-END DOCSIS
®
/EuroDOCSIS
F E A T U R E S
MAC/PHY
1394
Firewire
™
HomePlug AV
802.11g,n
MOCA
2.0+ including DSG and channel
Stereo Audio Out
HD AVC/VC-1 Dual DVR DOCSIS 2.0+ Set-Top Box
Audio Out
®
200 MHz
SDRAM
512 MB
DDR
64Mx8
Flash
HDMI Out
HDMI/DVI Out
Sec. up/CA
CHANNEL BONDING
HDD
S/PDIF Out
DVD-R/W
S/PDIF Out
Drive
Video Out
IR & UHF I/O
®
NTSC/PAL
Video
1000+ DMIPS
AVC, VC-1
BCM7400
Dual HD
YPbPr Out
BCM3255
Comp. Video
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Brief
RF Out
The BCM3255 provides a complete front-end solution for next-
generation high-end set-top box products and media centers.
North America and international markets enable a single
design to be deployed on a worldwide basis.
Able to support IP video data rates at up to 120 Mbps, allowing
for future transition to an all-IP network.
Software-switchab le from broadcast (video channel
configuration) to channel bonding, enabling in-field network
configuration transitions.
High-performance processor capable of supporting DOCSIS/
EuroDOCSIS 2.0+, channel bonding, and other network-
centric applications.
OOB provides support for existing OOB channels that are
used today. Facilitates move to DSG and DOCSIS.
USB 2.0, PCI, and Ethernet make for flexibility in connection
to back-end devices, BCM7400, BCM7401, and BCM7038.
BOM savings resulting from integration enable lower overall
set-top box cost.
Broadcom-supplied code for channel bonding and DOCSIS
enables quick time-to-market.
TS In
TS In
TS In
PCI
RF Mod
OpenCable
CableCARD
Front Panel I/F
Dual USB 2.0
S U M M A R Y O F B E N E F I T S
DOCSIS 2.0+
800 DMIPS
™
BCM3255
USB 2.0
®
2.0+ STB IC WITH
10/100 Ethernet
10/100 Enet
BCM3420
BCM3420
BCM3420
Power
SDRAM
16MB
DDR
Cable In
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bcm3255 Summary of contents
Page 1
... BCM3255 Brief CHANNEL BONDING • The BCM3255 provides a complete front-end solution for next- generation high-end set-top box products and media centers. North America and international markets enable a single design to be deployed on a worldwide basis. • Able to support IP video data rates 120 Mbps, allowing for future transition to an all-IP network. ® ...
Page 2
... The BCM3255 supports both the individual program channel mode (up to three video channels) and the channel bonded mode (up to three DOCSIS channels). These modes can be switched from one to the other via software, making the BCM3255 ideal for networks that will move to channel bonding and IP video in the future. ® ...