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The Broadcom BCM3216 is a DOCSIS
for Cable Modem Termination System (CMTS) equipment used in
broadband cable networks.
Supports up to 512 L2TPV3 sessions to handle 128 physical
upstream channels.
Dual-packet port provides a high-throughput data interface to
network equipment via standard IEEE 802.3z™ GMII Ethernet
interface.
Full DOCSIS 1.0/2.0/3.0 upstream support including: Segment
sequence reordering and DOCSIS frame extraction, Baseline
P r iv a c y w it h D E S / A E S , P a y lo ad H e a d e r S u p p r e ss io n ,
Concatenation, and Fragmentation.
Supports seamless interface to BCM3142 12-Channel DOCSIS 3.0
Burst Receiver either through direct connection or with a switch
fabric.
Supports Broadcom’s packet accelerator technology Propane
increased efficiency in upstream operation.
Supports up to 350,000 packets-per-second or operation up to
600 Mbps.
Supports up to 64K flows with a flexible association between
L2TPV3 Session and SID to FLOW ID.
Support for junction temperature of 0°C to 85°C
DOCSIS 3.0 Cable Modem Termination System (CMTS) Block Diagram
F E A T U R E S
BCM3216 DOCSIS
®
®
3.0 Upstream MAC chip
60 Channels (each up to 5.12 Mbaud, Q256)
60 Channels (each up to 5.12 Mbaud, Q256)
DOCSIS 3.0 Upstream PHY Slice
DOCSIS 3.0 Upstream PHY Slice
12-Channel DOCSIS 3.0
12-Channel DOCSIS 3.0
BCM3142
BCM3142
Burst Receiver
Burst Receiver
®
®
for
3.0 UPSTREAM MAC CHIP
BCM3216
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A high-performan ce, integrated solution for upstream
transmission for data, video and telephony applications over
cable HFC networks.
Hardware support for MAC-layer per-packet functions
including bonding reassembly, fragmentation, concatenation,
and payload header suppression, offloads system CPU, giving
higher overall system performance.
Flexible association between MAC and PHY capacity enables
high-density equipment designs with efficient scalability,
reducing equipment floor space requirements.
Provides full DOCSIS/EuroDOCSIS™ 3.0 compliance for use in
CMTS equipment.
Faster line rates enable advanced data services over cable without
stranding deployed equipment.
Dual-packet ports architecture relieves congestion on ingress and
egress thus reducing switch fabric buffer requirements.
All provisioning is in-band over the packet port and carried over
UDP/IP.
Egress packets are encapsulated in UDP/IP with per flow
destination selection of up to eight PDU or MAC management
destinations.
The BCM3216 is field upgradable both for firmware and
hardware.
DOCSIS 3.0 Upstream MAC
DOCSIS 3.0 Upstream MAC
Slice: 350,000 pkts/sec
Slice: 350,000 pkts/sec
DOCSIS 3.0 Upstream
Resequencing + MAC
DOCSIS 3.0 Upstream
Resequencing + MAC
BCM3216
BCM3216
128M x 16
128M x 16
INTF x 4
INTF x 4
SDRAM
SDRAM
S U M M A R Y O F B E N E F I T S
DDR2
DDR2