editor's blog
Subscribe Now

Full Networking Offload

Eight months ago, Atheros (now part of Qualcomm) released a WiFi offload chip, their AR4100. It’s part of a push to enable internet-of-things applications with good-to-go 802.11b/g/n connectivity; it includes everything except the antenna. (And NVM, which is cheaper to implement with a second chip.)

They just announced some upgrades to that product, but they’ve also launched a new chip, the 4100P, which adds full networking offload. The 4100P has UDP and IPv4/v6 stacks, freeing up 60-100K of microcontroller NVM since the microcontroller no longer has to worry about this.

Meanwhile, they’ve cut down both the code store (formerly around 38K, now 24-25K) and the working memory requirements (was 11K, is now 8K) for the 4100 drivers.

While the difference between just 802.11 and UDP and IP is mostly handled in software, there apparently are some OTP settings on the chip that are different between the 4100 and the 4100P; the latter is somewhat more than simply the former with different software.

You can find more info in their release

Leave a Reply

featured blogs
Apr 1, 2020
Commercial Off-the-Shelf (COTS) products are making their way into industries that wouldn’t have considered them previously. This is mainly due to the flexibility, speed of delivery, and cost savings that COTS products offer when compared to a full MIL-SPEC product. How...
Mar 31, 2020
"It is sometimes difficult to determine if quotes found on the Internet are genuine or not" (Abraham Lincoln)....
Mar 30, 2020
An improvement to BIST improves test coverage and time to improve functional safety of automotive ICs The growth of electronics in automobiles has spurred significant innovation in the development of advanced safety mechanisms for all the electrical and electronic systems in ...
Mar 27, 2020
[From the last episode: We saw how pointers are an important kind of variable, representing data whose location we can'€™t predict in advance.] We saw last time that pointers are used to store the addresses of data stored in memory space that'€™s allocated while the progr...

Featured Video

LE Audio Over Bluetooth with DesignWare Bluetooth IP

Sponsored by Synopsys

The video shows the new LE Audio using Synopsys® DesignWare® Bluetooth 5.2 PHY IP and Link Layer IP with isochronous channels, and ARC® Data Fusion IP Subsystem with ARC EM9D Processor, running the LC3 codec supporting LE Audio.

Click here for more information about Bluetooth, Thread, Zigbee IP Solutions