BCM8021 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – 4 CHANNEL MULTIRATE 1.0-3.2 GBPS TRANSCEIVER WITH HIGH SPEED REDUNDANCY

BCM8021
®
4-CHANNEL MULTIRATE 1.0–3.2-GBPS TRANSCEIVER WITH
HIGH-SPEED REDUNDANCY
FEATURES
• 4 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, 2.667 Gbps, 3.125 Gbps, and 3.1875 Gbps
• Multiconfigurable to support various operating modes
• 4 Independent 1.0 to 3.2-Gbps SerDes transceivers
• IEEE 802.3ae compliant XAUI to XGMII transceiver
• XAUI-to-XAUI retiming
• Low power dissipation
• Less than 300 mW per transceiver channel including I/O
• SONET/SDH-quality jitter performance
• Less than 3 picoseconds rms jitter generation
• Exceeds SONET jitter tolerance mask
• 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
• Full loopback and on-chip PRBS generator/checker
• IEEE (1149.1) JTAG
• Compact 21-mm × 21-mm BGA package
• 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.
• Advanced 0.13-µ CMOS process technology provides
unparalleled performance while achieving the lowest possible
power consumption.
• IEEE 802.3ae 10-Gigabit Ethernet physical coding sublayer
(PCS) has a selectable 8B/10B encoding/decoding block on-
chip that can be configured to support the 10-Gbps
Attachment Unit Interface (XAUI).
• Superior jitter characteristics enable the serializing/
deserializing (SerDes) of data signals transmitted through
front panel or backplane networking equipment supporting
both primary and protection circuits.
• _{Drive PMD devices or backplane directly with no external}
clean-up circuit required.
• _{Simplifies manufacturability with itegrated Built-in self-test}
(BIST), high-speed and low-speed loopbacks, and
programmable PRBS generator/checker.
• _{Decreases complexity and reduces board space on}
multichannel linecard designs.
Tx
BCM8702
Rx
BCM8021
ASIC/MAC
BCM8021
2× XENPAK
Tx
BCM8702
2× XAUI
1× XGMII/TBI
1× XGMII/TBI
2× XAUI
Rx
Independent Quad SerDes Application Diagram