Electronics > Microcontrollers

identify Controller by Pinout?

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peet8989:
Hi,


i need to know what µC are used on this PCBs:
PCB1 (Has 2.4GHz Transceiver built in)
PCB2 (Pins 1-4 tend to be some SPI-Interface to the RF-Unit)

both connect to a host machine via usb, so this functionality tends to be integrated into the chip
i'm guessing microsoft did not develop their own asics. They rather "rebranded" some widely available microcontrollers.

but how to identify the controller used?

btw: none of the boards is physically available to me (yet)

i would be glad if you could help me out with some tips :9

best regards

DrGeoff:
Identify such things as power supply pins, serial port pins, jtag/programming pins and SPI/I2C pins. See if they match up with any of the popular MCUs (Hitachi, Renesas, Microchip, Atmel etc).

Balaur:

--- Quote from: peet8989 on August 23, 2011, 09:30:33 pm ---
i'm guessing microsoft did not develop their own asics. They rather "rebranded" some widely available microcontrollers.


--- End quote ---

Really? This is a very cute assumption.

Come on, just by looking at the Wiki Xbox HW page: http://en.wikipedia.org/wiki/Xbox_360_hardware you can understand that the design effort was significant and that the chips are largely ASICs. This includes the Wireless Gaming Receiver you are trying to reverse engineer.

Quick remark: The ATMLH926 is most likely a 24C08 (8K serial ROM) that contains some product id data (serial, maybe USB ids, who knows).

peet8989:
thanks for your answer.

but in the wikipwdia article is nothing said about asics!

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