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MROD_X_Out

CR_CSR_DataMux

Documentation for architecture MROD_X_Out/CR_CSR_DataMux/a0

VHDL Contents

    1  -- EASE/HDL begin --------------------------------------------------------------
    2  -- 
    3  -- Architecture 'a0' of entity 'CR_CSR_DataMux'.
    4  -- 
    5  --------------------------------------------------------------------------------
    6  -- 
    7  -- Copy of the interface declaration:
    8  -- 
    9  --   port(
   10  --     BAR         : in     std_logic_vector(7 downto 0);
   11  --     CR_CSR_D    : out    std_logic_vector(7 downto 0);
   12  --     CR_Data     : in     std_logic_vector(7 downto 0);
   13  --     Cs_Bar_n    : in     std_logic;
   14  --     Cs_BitClr_n : in     std_logic;
   15  --     Cs_BitSet_n : in     std_logic;
   16  --     Cs_CR_n     : in     std_logic;
   17  --     Q_BitSetClr : in     std_logic_vector(7 downto 0));
   18  -- 
   19  -- EASE/HDL end ----------------------------------------------------------------
   20  
   21  architecture a0 of CR_CSR_DataMux is
   22  
   23  begin
   24     Process(Cs_BitSet_n, Cs_BitClr_n, Cs_Bar_n, Cs_CR_n,
   25             Q_BitSetClr, BAR, CR_Data)
   26     Begin
   27        If Cs_BAR_n = '0' Then
   28           CR_CSR_D <= BAR;
   29        ElsIf Cs_BitSet_n = '0' Then
   30           CR_CSR_D <= Q_BitSetClr;
   31        ElsIf Cs_BitClr_n = '0' Then
   32           CR_CSR_D <= Q_BitSetClr;
   33        ElsIf Cs_CR_n = '0' Then
   34           CR_CSR_D <= CR_Data;
   35        Else
   36           --All reserved or unimplemented locations in the Defined CR Area
   37           --shall read as 0x00 (VME64x Rule 10.2)
   38           --All unimplemented locations in the Defined CSR Area shall Read
   39           --as 0x00 (VME64x Rule 10.14)
   40           CR_CSR_D <= (Others => '0');
   41        End If;
   42     End Process;
   43  end architecture a0 ; -- of CR_CSR_DataMux
   44