![]() ![]() Additionally, Apple has a number of patents related to authentication and security between devices. This means that Apple needs to apply some intelligence to what wire is sending and receiving the signals because there are fewer connections, but just as much data. Part of the magic going on is that the Lightning connector features fewer direct connections than the prior generation connector. This is certainly all consistent with a serial communication chip including some simple security features. There are also some large driver transistors, quite a bit of analog circuitry, and a fair amount of capacitance. Also on the chip is the EPROM, with likely 64 or 128 bits of storage (visual inspection only, full RE not completed). This block includes about 5K gates of logic. There is a digital logic block occupying the top left portion of the chip. On this sample, we have been able to see some further details of this chip. We continued our lab work on the BQ2025 and now have a lower metal sample to view (and purchase in the TechInsights store). It would also seem likely that it includes an SDQ interface. ![]() So, it is certainly likely that the BQ2025 does have some security implemented on it. All use a single wire SDQ interface (TI’s proprietary serial communications protocol). However, all four do have some common characteristics. 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, TI does have published datasheets on the BQ2022, BQ2023, BQ2024, and BQ2026. Once we stripped away the cable housing (easier said than done), and took the die out of the package, we found die markings of “BQ2025”. The C101 lightning connector is used Lightning to 3.5 mm Headphone Jack Adapte r.The side image shows the location of the TI chip on the lightning connector. C100 Lightning ConnectorĬ100 lightning connector is use on Earpods with Lightning Connector C101 Lightning Connector C91 lightning connector is the same as C94 lightning connector, but C91 lightning connector was used on Apple original cable, C94 lightning connector is used on third parties of mfi manufacturer, however, now latest USB C to lightning cable from Apple also use C94 lightning connector. The C94 lightning connector looks the same as the C89 lightning connector, and their price also the same. C48 lightning connector pin color is gold, but the C89 lightning connector pin color is silverĬ94 Lightning Connector and C91 Lightning ConnectorĬ94 lightning connector is used on USB C to Lightning cable which supports 18W or higher PD fast Charging.There are several small ICs on the C48 lightning connector PCB, but the C89 lightning connector with a big IC on the PCB makes it more difficult to crack.The below picture shows the difference between the C48 lightning connector and the C89 lightning connector. The function of the C48 lightning connector is the same as the C89 lightning connector, but the C89 connector is designed with high-level confidentiality of information. C89 Lightning ConnectorĬ89 lightning connector is used on the USB to lightning cable which used instead of the old C48 lightning connector. No matter how apple updates the IOS, the C48 lightning connector still works as long as it is original. The C48 lightning connector in the market is all the old stock, but it doesn’t matter about the function, it still works on the latest iPhone 12 or iPad. ![]() Regarding the mfi cable, we can see that there are many kind of lightning connector, such as C48/C89/C91/C94/C100/C101, you may get confuse what difference are they? Aren’t them the same lightning connector as they looks the same? C48 Lightning ConnectorĬ48 lightning connector is used on USB to Lightning Cable, it is old version lightning connector, apple stop to supply C48 connector since March 2019. Differences of Apple MFI Original Lightning Connector C48/C89/C91/C94/C100/C101 ![]()
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