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Bye Bye a los cables/DAC LOD iPod/iPhone(por lo menos de momento)

Iniciado por nepro, Septiembre 07, 2012, 02:19:32

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Que peligro tienen los chinos. Era cuestión de tiempo y veremos otros fabricantes sacando cables y bases compatibles con el iPhone5 en un futuro cercano.


Qué monstruosidad. Lo primero que yo haría es cubrir el cable con cinta aislante ;D ;D


Cita de: Carlos
Qué monstruosidad. Lo primero que yo haría es cubrir el cable con cinta aislante ;D ;D

Nada nada, eso lo pones en la mesilla de noche, quitas la lampara y te crea un estupendo ambiente discotequero mientras duermes. Si quieres hacer la gracia completa quitas la lampara del techo y pones una bola de espejos de los años 80.  tal vez hasta pueda hipnotizar a los mosquitos que pretendan picarte.   >D


Lightning to 30 Pin Adapter Torn Down, Designed To Be Unhackable & Uncounterfeitable

"To access the contacts for the audio output to somehow hack a cable to this and make a dock audio output cable – would require a Ph.D. in electrical engineering and specialized tools."


Un resumen para "mortales" en MacRumors

Ojo con el CRC:

CRC does not, however, serve to authenticate connections and is instead primarily used to check for errors in data transmission.

Inside the Apple Lightning Cable

We have confirmed that the Lightning cable does have four chips embedded in it, plus some passive devices. Two of these chips are very simple (only a couple of transistors), and the third is an NXP NX20P3. However, the fourth and arguably most interesting of these is the TI chip. ("BQ2025")

TI does have published datasheets on the BQ2022, BQ2023, BQ2024, and BQ2026. These four chips are cataloged on TI's website as battery fuel gauges, but they are not identical, with three of them being serial EPROMs and one of them being a battery monitor IC.

However, all four do have some common characteristics. All use a single wire SDQ interface (TI's proprietary serial communications protocol), and all have some basic security features such as CRC generation. So, it is certainly likely that the BQ2025 does have some security implemented on it. It would also seem likely that it includes an SDQ interface.

The security does not come close to the herculean approaches that are used in (for example) today's printer cartridges, but resembles the level of effort that cartridge manufacturers used to implement in the olden days. This is likely a calculated decision by Apple to keep costs to a minimum knowing that their core customer base prefers to shop in Apple stores or for brand name peripherals. In these places, piracy is not a concern. In other words, at this time the security is "just enough." With future generations of Apple and non-Apple products, we may begin to see even stronger security and control if the market forces merit it.

nota: el chip con el punto blanco es el TI BQ2025


Resumiendo ...

TI BQ2025:
"This is certainly all consistent with a serial communication chip including some simple security features," Chipworks concluded.

Comprobación de redundancia cíclica, un mecanismo de detección de errores en sistemas digitales.


TI chip in Lightning cable could allow iOS devices to save electricity when charging

Another possibility is that the chip is being used to better conserve electricity. For example, the cable could stop drawing electricity once the connected iOS device is fully charged to provide the obvious benefit of saving power. According to research from Opower, the iPhone 5 costs a mere 41 cents annually to charge once per day. However, the focus might simply be a greener, more energy efficient product.


Vaya master estas haciendo Nepro. Muy interesante todo esto.