Browse By Tags

Sorry, but there are no more tags available to filter with.

  • [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 should be asserted while PSEL is high like PADDR…

  • 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?