• why PSTRB signal in APB4 have four bits?
    PSTRB signal indicates which byte lanes to update during a write transfer. it shows that the bus contain valid data, when PSTRB[3:0]=1111. why we need bus instead of single bit PSTRB signal?
  • How to assert PSLVERR in APB4 ?
    Hi All, I have a question about APB4 slave i think PSLVERR will be asserted when address is incorrect. Is my understanding correct? Regards, PhanTam
  • Application scenarios of APB4
    What are some application scenarios of APB4? Please brief me about this as I am working on APB4.
  • [APB] Assert timing of PSTRB and PPROT
    Hi All, I have a question about assert timing of PSTRB and PPROT. I think APB4 spec (IHI0024C_amba_apb_protocol_spec.pdf) does not describe when PSTRB and PPROT should be asserted. I guess these signals...
  • APB process when pstrb = "0000" or "0101" during write transaction
    I understood that pstrb = "0000" during read transaction. But what happens if pstrb = "0000" during write transaction. Does data successfully transafered without update? And also I want to know...