Product category:
Communications ICs (Wired)
News Release from: Intersil | Subject: HFA3842 MAC
Edited by the Electronicstalk Editorial
Team on 21 February 2001
MAC puts wireless networking on the USB
Intersil's HFA3842 MAC is designed to reduce the cost and size of embedded wireless LAN systems and provide USB or PCMIA connectivity.
Intersil's HFA3842 MAC is designed to reduce the cost and size of embedded wireless LAN systems and provide USB or PCMIA connectivity The cost savings are partly achieved by replacing expensive, large footprint flash memory with smaller E2PROM, saving board space and cost
This article was originally published on Electronicstalk on 8 Oct 2008 at 8.00am (UK)
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This new enhanced MAC also features built-in USB and PMCIA interfaces for easy integration into products ranging from PCs and notebooks to embedded WLAN systems and stand-alone external WLAN modules.
It supports the IEEE 802.11b standard's highest data rate to 11Mbit/s.
The Intersil MAC comes with easy-to-install firmware that configures the USB or PCMCIA bus for direct interface with Intersil's PRISM II WLAN chipset, allowing OEMs to easily add a complete IEEE 802.11b wireless networking capability to their next-generation products for the home and office.
The HFA3842 is a pin-for-pin replacement of the HFA3841, the existing 11Mbit/s MAC for the PRISM II chipset.
The new MAC provides high-speed direct-sequence spread-spectrum wireless networking systems with minimum power consumption.
Low power consumption is critical, as products will likely be powered via the USB connection and this significantly limits the amount of current the chip set can consume.
The HFA3842 provides full implementation of the MAC protocol specified in the IEEE 802.11b high rate DSSS standard.
When used with the PRISM II chip set, the device is capable of delivering wireless data, voice and video at transmission speeds of 11Mbit/s.
It also provides fallback rates of 5.5, 2 and 1Mbit/s.
making it interoperable with older 802.11 DSSS systems.
Packaged in 128-pin LQFPs optimised for Type II PCMCIA cards, the HFA3842 is now in full production.
An evaluation board, firmware, Microsoft Windows software device drivers and complete documentation are also available.
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