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justfine
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re: Broadcom hits tera-ops with comms processor
justfine   6/13/2013 1:29:58 AM
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Intel, Comcast, Cisco just announced the XFINITY Wireless Gateway. It uses Intel's Puma 6 silicon. The Wireless Gateway from XFINITY Internet is capable of up to 16 bonded downstream channels supporting speeds up to 640 Mbps. The Puma 6 is the first DOCSIS silicon to reach up 1 Gbps downstream by bonding up to 24 DOCSIS channels and up to 240 Mbps upstream by bonding up to 8 DOCSIS return channels

TarraTarra!
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re: Broadcom hits tera-ops with comms processor
TarraTarra!   6/13/2013 9:57:54 PM
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20 out-of-order cores, multi-threading and multi-chip coherency. That is certainly a beast. Rick, any idea what the die size and power consumptions are.

TarraTarra!
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re: Broadcom hits tera-ops with comms processor
TarraTarra!   6/13/2013 10:03:52 PM
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The XLP980 and the CaviumCNxx are similar in so many ways but yet different. They both seem to have a slew of accelerators specific to the networking segment, both use MIPs based CPUs and are on 28nm. But the CPU implementations are different. Netlogic's is an out-of-order multi-thread while Cavium is an in-order single-thread. I wonder which is better suited for the target application. Interestingly the Intel processors are also out-of-order multi-threaded so it might appear that the XLP can better compete with Intel.

rick merritt
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re: Broadcom hits tera-ops with comms processor
rick merritt   6/16/2013 4:15:49 AM
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Great observations and questions Mike. I have no doe size, cost or power numbers from Broadcom. Anyone out there have this data?



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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