BCM8020
8-CHANNEL MULTIRATE 1.03.2-GBPS TRANSCEIVER
2 Independent Quad SerDes Application Diagram
8 independent transceivers supporting multiple data rates
from 1.0 Gbps to 3.2 Gbps including 1.06 Gbps, 1.25 Gbps, 2.12
Gbps, 2.488 Gbps, 2.5 Gbps, 2.667 Gbps, 3.125 Gbps, and
3.1875 Gbps
Multiconfigurable to support various operating modes
Eight Independent 1.0 to 3.2-Gbps SerDes Channels
Dual quad 1.0 to 3.2-Gbps SerDes with channel alignment
SerDes-to-SerDes retimer mode: CML and XAUI interfaces
Full mesh switching maps any XAUI port to any XGMII port
for full redundancy on both transmitter and receiver
Selectable TBI DDR/RTBI or XGMII parallel interface
HSTL (1.8V or 1.5V) and SSTL_2 parallel interface
Low power dissipation
Less than 300 mW per transceiver channel including I/O
High performance programmable Rx equalization and Tx pre-
emphasis
Tx pre-emphasis for interoperability with CML SerDes
Rx equalization for copper interconnects
Enhanced test capability
Serial and parallel loopback, BIST, 10G BERT, and random
Ethernet packet generation
IEEE (1149.1) JTAG
Compact 23-mm 23-mm package with no external
components required
No requirement for heat sink or airflow
BACKPLANE
2
XAUI
2
XAUI
2
XGMII/TBI
2
XGMII/TBI
2
XENPAK
Tx
Rx
Tx
Rx
BCM8702
BCM8702
ASIC/MAC
BCM8020
BCM8020
One device supports a variety of applications including
Gigabit Ethernet, 1 and 2 Fibre Channel, OC-48 SONET
(with/without FEC), Infiniband, 10-Gigabit Ethernet, 10-
Gigabit Fibre Channel, or others.
Flexible architecture supports programmable configurations
enabling an aggregate data transfer rate of over 20 Mbps.
Built-in redundancy mode provides high availability to
support critical line side or backplane applications. The high-
speed to high-speed retimer mode extends the use of longer
traces on line card designs.
Advanced 0.13- CMOS process technology provides
unparalleled performance while achieving the lowest possible
power consumption.
Eases linecard designs to allow for multiple connectors or low-
cost PCB materials such as FR4.
Drive PMD devices or back-plane directly with no external
clean-up circuit required.
Simplifies manufacturability with integrated Built-in self-test
(BIST), high-speed and low-speed loopbacks, and
programmable PRBS generator/checker.
Decreases complexity and reduces board space on multi-
channel line-card designs.
F E A T U R E S
S U M M A R Y O F B E N E F I T S
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