FOUR-PORT 10GBASE-T TRANSCEIVER
The Broadcom® BCM84848 is a complete quad
100BASE-TX, 1000BASE-T and 10GBASE-T solution
operating at 100m over CAT6a UTP cable. Its
23 x 23 mm BGA package permits 48-port 1RU
switches to be implemented with the PHYs in a single row, with room remaining for 6 QSFP uplinks.
The BCM84848 offers lower power than our firstgeneration 40 nm 10GBASE-T PHYs while adding
Energy Efficient Ethernet (EEE) for 1000BASE-T and
100BASE-TX, in addition to 10GBASE-T. Optional
Adaptive Voltage Scaling (AVS) delivers a low
power solution while enabling a low cost implementation. The BCM84848 is based on a highly
advanced digital signal processor architecture to
enable robust operations over worst case UTP
cables.
Small 23 x 23 mm package enables single-row
PHY design for 48-port switches while offering
forward compatible footprint
• Robust operation over 100m Cat6a cables
with industry-standard 4-pair magnetics.
• Auto-negotiation lowers system
administration cost.
• EEE on GbE delivers lower power for legacy
interconnections.
• IEEE standard device interoperability:
100 Mbps, 1000 Mbps, and 10 Gbps.
• Cuts design constraints to meet EMI standards.• Cable diagnostics identifies cable plant
condition to immediately trace cabling issues.
• 1588v2 with one-step timestamp insertion
provides high accuracy timing.
• 802.1ae MACsec provides link layer security
• Highly integrated four-port 10GBASE-T
Ethernet transceiver.
• Supports multiple speeds: 10GBASE-T as well
as 100BASE-TX and 1000BASE-T.
• XFI and SGMII MAC interface options.
• Compliant with IEEE 802.3, IEEE 802.3an,
IEEE 802.3ab, IEEE 802.3u, and IEEE 802.3az
standards.
• AutogrEEEn technology permits legacy MACs
to receive the power savings of EEE in periods
of reduced link utilization.
• Reduced number of power supplies with standard voltages: 1.0V and 2.5V.
• AVS for the creation of a local DVdd supply
from a 3.3V global supply.
• Synchronous Ethernet (SyncE) support.
• Cable plant diagnostics.
• IEEE standard 1588-2008 (version 2) support.
• Detection and correction of pair swaps (MDI
crossover), pair skew, and pair polarity.
• Support for jumbo packets up to 18 KB.
• Super-Isolate mode to completely disable a
selected port.
• IEEE 1149.1 (JTAG) boundary scan.
• Extensive selection of both line and network
side loopbacks.
BCM84848+10GYT002/10GYT007+RJ45
关联IC:BCM84848；BCM84883；BCM84888
