A.3.5. Read data channel signals

Table A.7 shows the AXI read data channel signals. Unless the description indicates otherwise, these signals are used by AXI3 and AXI4 protocols. For more information on each signal see the AMBA AXI and ACE Protocol Specification.

Table A.7. Read data channel signals

AXI signal NIC-400 adaptation[a]SourceDescription

Read ID tag.

Where n is a variable.

  • For an ASIB, ID width {0-16} where 0 indicates that no value has been selected.

  • For an AMIB, either:

    • Global ID width {1-24}


    • if ID reduction has been selected, then the values can be viewed from the AMIBs ID reduction report from the GUI.


Read data.


n is equal to data width - 1.

Data widths can be 32, 64, 128 or 256 bits.

rresp_x[b][1:0]SlaveRead response.
rlast_x[b]SlaveRead last.

User defined signal.


n is equal to user defined width -1.

A user defined width is in the range of 0-256 bits.

If 0 is selected then the signal is not used.

rvalid_x[b]SlaveRead valid.
rready_x[b]MasterRead ready.

[a] You can select uppercase or lowercase signal names from the GUI.

[b] Where x is:


for a bridge slave interface


for a bridge master interface


for a system slave interface or master interface.

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