BCM8020 Datasheet, PDF (1/1 Pages) Broadcom Corporation. – 8-CHANNEL MULTIRATE 1.0-3.2-GBPS TRANSCEIVER

BCM8020
®
8-CHANNEL MULTIRATE 1.0–3.2-GBPS TRANSCEIVER
FEATURES
• 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
SUMMARY OF BENEFITS
• _{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-µ 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.
Tx
BCM8702
Rx
BCM8020
ASIC/MAC
BCM8020
2× XENPAK
Tx
BCM8702
2× XAUI
2× XGMII/TBI
2× XGMII/TBI
2× XAUI
Rx
2 Independent Quad SerDes Application Diagram