Quando il nuovo iPhone era stato presentato a San Francisco, si era espressamente accennato alle interfacce verso dispositivi come i microtrasmettitori FM, ma allora si era pensato anche che le nuove possibilità a livello di API riguardassero l’uso di dispositivi esterni. Ora invece sembra che la funzionalità FM viene integrata direttamente sugli iPhone. La potenza di trasmissione dichiarata da Broadcom è di 117 dBuV, pari a 10 milliWatt. Mi chiedo se questo valore possa essere sufficiente a compromettere la commercializzazione della terza generazione iPhone in Italia. Teoricamente i minitrasmettitori FM per lettori MP3 sono in vendita e del resto la normativa per il low power FM è sicuramente allo studio a livello UE, dopo il lavoro normativo già svolto in Gran Bretagna. Ma sappiamo che la situazione del nostro etere FM è molto, molto particolare e non si può dire come verrà accolta la notizia della possibile presenza di migliaia di emittenti FM, per quanto tascabili. Staremo a vedere.
iPhone 3,1 to have Broadcom BCM4329, 802.11N/5GHz Wireless, FM transmitter/receiver
Sun, 04/05/2009 – 04:56 — Cleve NettlesAccording to the fine folks over at AI, the soon-to-be-released iPhone 3,1 references the Broadcom BCM4329 wireless chip in the boot script. This is a significant upgrade over the current Broadcom BCM4325 for a number of reasons. As they pointed out, the component upgrade adds power savings and new support for 802.11n features, including the ability to find and join 5GHz networks.
But they neglected to mention that it also adds the ability to receive and send (the previous model could only receive) information through FM radio signals which theoretically could be used to broadcast sound into car stereos..without external adapters. It could also be used to pick up FM radio music, news and sports broadcasts on their iPhones and even, in August, on iPods. Currently the FM reciever is only used to pick up communications from the Nike+ peripheral.
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BCM4329 Low-Power 802.11n with Bluetooth® 2.1 + EDR and FM (Tx and Rx)The Broadcom BCM4329 integrates a complete IEEE 802.11 a/b/g/n system (MAC/baseband/radio) with Bluetooth® 2.1 + EDR (Enhanced Data Rate), and FM radio receiver and transmitter. By combining several proven wireless technologies onto a single silicon die, the BCM4329 enables mobile devices to support today’s toughest media applications — without impacting device size or battery life.
The BCM4329 eliminates the barriers of adding the latest wireless connectivity features to small, battery-operated devices. In addition to bringing greater Wi-Fi throughput and coverage to mobile consumer electronics, the BCM4329 is Broadcom’s smallest and lowest cost dual-band 802.11n solution. It features integrated 2.4 GHz and 5 GHz WLAN CMOS power amplifiers, which reduce BoM costs while maintaining superior performance. The BCM4329 also utilizes advanced design techniques and process technologies to reduce active and idle power consumption and extend battery life.Features
- Broadcom’s most integrated 65 nm single-chip combo device with single-band (2.4 GHz) 802.11b/g/n or dual-band (2.4 GHz and 5 GHz) 802.11a/b/g/n, plus Bluetooth 2.1 + EDR and FM receiver and transmitter features
- Offers one of the industry’s most advanced Bluetooth/Wi-Fi coexistence technologies to ensure the best possible user experience
- Full featured, on-chip Power Management Unit supporting direct battery (2.3V to 5.5V) connection
- Bluetooth Core Specification Version 2.1 + EDR compliant with provisions supporting future specifications and Bluetooth Class 1 or Class 2 transmitter operation
- Supports 802.11n performance and range features, such as Space Time Block Coding (STBC), Short Gual Interval (SGI), A-MPDU aggregation, Block Ack, Greenfield, RIFS