Relationship between PSEL and PENABLE signals in the APB Protocol.

Hello All, I have some doubts related to the relationship between PSEL and PENABLE signals in the APB Protocol. The specification informs that: The PENABLE signal is asserted the following clock...
APB Protocol: PSel and PEnable signal dependencies.

Hello All, This is the first time I'm developing an APB slave. I have some doubts related to APB Protocol. There are three phases such as IDLE, SETUP, and ACCESS as per the state diagram given in the...
APB control signals behavior before psel is asserted

In APB spec all the control/addr signals are changing exactly when psel is enabled, but I have seen designs where pwrite/paddr/pwdata data asserted before psel=1. This implementation seems to be fine...
AMBA 3 APB PENABLE wrt PREADY

Hi, I need a clarification on PENABLE with respect to PREADY. 1) Can pready remain high for more than one cycle? 2) Does PENABLE from the master has to look for PREADY going low to deassert or it...
AMBA 3 APB PENABLE wrt PREADY

Hi, I need a clarification on PENABLE with respect to PREADY. 1) Can pready remain high for more than one cycle? 2) Does PENABLE from the master has to look for PREADY going low to deassert or it...