BCM8320 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – DUAL 10G FABRIC INTERFACE

BCM8320
®
DUAL 10G FABRIC INTERFACE
FEATURES
SUMMARY OF BENEFITS
• Highly integrated, scalable switch fabric
• Single-chip bandwidth of up to 40 Gbps
• Supports two CSIX interfaces to line side
• Each CSIX supports 32, 64, or 128 bits at speeds up to 166
MHz
• HSTL Class 1 drivers
• Optional out-of-band flow control
• Four Egress Queues per CSIX interface
• 96-byte or 112-byte payloads
• Flexible fabric speedup and redundancy schemes
• Additional speedup to handle Cell Size + 1 byte case
• Link failure causes graceful reduction in speed-up
• Support for 16k Multicast Groups
• Full multicast group ID carries through the fabric
• Static or dynamic configurable VOQ cell buffering
• Single level or hierarchical Weighted Round Robin scheduling
• Proven high-speed 3.125 Gbps SerDes technology
• Guaranteed Class of Service through the system – fabric
interface chip (BCM8320) schedules based on destination,
while the fabric switch chip (BCM8332) schedules based on
source. QoS can be set on a source/destination basis with no
interference from other channels.
• Supports dual 10G interfaces in a single device.
• Excellent redundancy: all links that are used are always active.
N-1, N+1, and N≠2 redundancy modes are all supported – no
software intervention is necessary.
• Automatic link failure detection – no software intervention is
necessary.
• Integrated SerDes provides a cost-effective and power-
conscious solution.
BCM8320 System Architecture