BeagleBone Black I2C max data rate?

Jim Ashby

HI, I have a BeagleBone Black card and I need to interface to another Processor through the I2C com port.

According to the data sheet on the AM335x CPU, the max speed is 400Kbps.

Is this a correct statement?

If the I2C ports are limited to 400Kbps, then I will need to use the SPI port.

Now, what is the fastest speed I can use the SPI ports at?

I need a minimum of 1mbps to transfer all of the pre-processed data to the BeagleBone Black module.

How can I do that reliably?

0 peaves over 11 years ago

The same data sheet defines the maximum SPI frequency for OPP100 master mode as 48MHz and OPP100 slave mode as 16 MHz.

Regards,
Paul

0 Jim Ashby over 11 years ago in reply to peaves

Thanks, Paul.

It looks like the I2C port will serve my application best.

I will be using it in the Master mode.

Now onto building an Android 4XX OS to load the application built with Basic 4 Android IDE.

0 Jim Ashby over 11 years ago in reply to peaves

Do you know where to point me to acquire an .iso image of an android 4.x load for an SD flash card which I can use with the LCD7 and BBB?

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