05-03-2015 09:06 AM
Hello, I am trying to communicate with an I2C slave that requires 1.5 kOhm pullup resistors on SCL/SDA. I was going to solder in physical resistors myself, but then remembered the pullup column in the Vivado configurator (attached).
I can change the "disabled" to enabled easily enough, but I cannot find any documentation on what pullup resistor values is used in Zynq. On the MIO pins, the pullup can be en/disabled through MIO register, so I wondered what this pullup option does exactly. Can you please refer me to a documentation that lists the pullup resistor values used inside the Zynq chip?
05-03-2015 09:13 AM
WEAK, need add extra R pullup or then use 10khz clock when only internal pullup is available
05-03-2015 10:44 AM
05-03-2015 12:29 PM
it is so, when I say so.
36 years of experience, it is heavy but I carry on
it probably works bit above 10K also, but 10K is safe bet.