The BCM5700 is a high-performance 10/100/1000BASE-T Ethernet LAN controller optimized for NIC and LOM applications. The BCM5700 is a highly integrated solution combining 10/100/100BASE-T IEEE 802.3 compliant Media Access Controller (MAC), PCI and PCI-X bus interfaces, and on-chip buffer memory in a single device. The BCM5700 is fabricated in a low voltage 1.8V CMOS process, providing a low power system solution. Combine the BCM5700 with the BCM5401, or later single chip Gigabit Ethernet Transceiver, to achieve a complete NIC or LOM solution for 10/100/1000BASE-T Ethernet.
The BCM5700 includes a 10/100/1000 Mbps Ethernet MAC with full/half-duplex capability at all speeds. The MAC interfaces to the external transciever via the GMII in 1000BASE-T mode, the MII in 10/100BASE-T mode, and TBI serial interface in 1000BASE-SX/1000BASE-FX mode. Support for the following Read All
This is an artilce about WLAN design written by Agilent’s engineer. WLAN standard is discussed in the article, 802.11a, 802.11b, 802.11g, OFDM modulation is also mentioned. The design of WLAN transmitter and receiver is the most importan part in the document, it will be of great help for WLAN designer.
WLAN Design Guide: Click to download Read All
About a week ago, my mentor gave me a high power USB dongle and asked to collect some data about it. It is said that the maxium output power is 500mW, that’s 27dBm! I was so interested in the ability of the USB dongle that I “anatomized” it immediately when my mentor went away, at the same time, I took some pictures for it, here I want to share them with you.
Streamline design, it looks like a cool Ferrari, doesn’t it? The heat emission holes are distributed by the side.
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Linksys’ newest dual-band Wireless-N gigabit router WRT320N usues Broadcom solution.
The BCM53115 architecture is the optimal solution for consumer switching needs with its support for high-performance line rate capabilities and ability to identify and prioritize different data packet types within the switch while simultaneously assigning voice packets a higher priority for outbound communications.
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The BCM53115 is poised to drive GbE into the unmanaged and Smart switch, WLAN router, and CPE/Gateway markets with its comprehensive Layer 2 feature set, support for both DSL/cable modem and WLAN connectivity, and an industry-leading 5 Gb of switching capacity-all on a single chip.
WRT320N is a Read All
Atheros Communications is demonstrating its comprehensive portfolio of solutions for the WLAN, mobile WLAN, Bluetooth®, wireless Personal Area Networking (WPAN), GPS and Ethernet markets in its Technology Suites #2428, 2442 and 2445 at the Grand Hyatt Taipei during COMPUTEX 2009, June 2-6.
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With the rapid growth of wireless applications that continue to raise the bar in consumers’ work, as well as play, anytime connectivity is no longer simply nice to have, it is a must have requirement for vendor products. Atheros’ innovative connectivity portfolio enables our customers to meet the expanding demand for “always connected” Read All
Agilent Technologies Inc. recently announced release of its 1Gxx family of MMIC (Monolithic Microwave IC) products through existing distribution channels. The MMIC devices, previously exclusively used by Agilent, are now available for a select set of end-user customers. The 1Gxx MMICs provide superior performance for applications focused at aerospace/defense and telecommunications.
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MMICs are at the core of most high-frequency, high-speed electronic products, performing functions such as microwave mixing, power amplification, low-noise amplification and high-frequency switching. The 1Gxx family of products consists of a diverse selection of millimeter-wave ICs, built-in GaAs and InP processes. Included will be the packaged and die Read All
Oscillators provide the timing pulse for measurement instrumentation, military weaponry, telecommunication systems and a vast array of consumer electronics. Unfortunately, like many electronic devices, oscillators may be adversely affected by noise on the power supply line. The resulting frequency instability may render a system incapable of meeting desired performance parameters. Consequently, the ability of an oscillator to reject supply noise is an important consideration during the oscillator and system design phase.
In most instances, noise is unwanted energy that interferes with the proper operation of a system. The voltage applied to an oscillator’s input pins is typically DC, but has a combination of noise from the power supply source as well as superimposed interference from the power distribution lines. The offending noise is classified as either broadband or narrowband and stochastic or deterministic. All combinations of these may be present in an oscillator’s Read All
Hi, I’m writting an article about RF design in Wi-Fi product recently, the content is based on Atheros and Ralink’s solutions, which are widely used in Wi-Fi product in today’s market, and I hope will do every RF engineer a favor, thanks. Read All