4DSP Support Forum

Products => FMC Products => FMC122, FMC125, FMC126 => Topic started by: ssasi on February 24, 2014, 07:08 PM

Title: I2C address of the I2C-bus to SPI bridge chip
Post by: ssasi on February 24, 2014, 07:08 PM

Hello,


In Table 7 of the FMC12x manual, it states that the I2C addresses of the devices depend on global address pins (GA0, GA1).


How do I find out the values of GA0 and GA1 on my board? Are they certain pins on the FMC connector?


Thanks.

Title: Re: I2C address of the I2C-bus to SPI bridge chip
Post by: arnaudNL on February 25, 2014, 09:01 AM

Dear Sir,


Yes they are coming from the carrier via the FMC connector. On ML605 it is '0' for other boards you would need to consult schematics/user guides.


Best Regards,
Arnaud

Title: Re: I2C address of the I2C-bus to SPI bridge chip
Post by: ssasi on February 25, 2014, 09:10 PM

Thanks, Arnaud. I find that they correspond to C34 and D35 on the HPC FMC pinout, and also called the Geographical Address pins.

Title: Re: I2C address of the I2C-bus to SPI bridge chip
Post by: arnaudNL on February 26, 2014, 05:38 AM

This topic is being closed because the issue is considered as resolved by 4DSP. Feel free to create a new topic for any further inquiries.