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entity sr64_32a is
port (
E_N : in bit_vector ( 0 to 3) ;
W_N : in bit ;
DAT : inout mux_vector (31 downto 0) bus;
ADR : in bit_vector ( 5 downto 0) ;
VDD : in bit ;
VSS : in bit
);
end sr64_32a;
architecture STRUCTURAL of sr64_32a is
component sr64_8a
port (
E_N : in bit ;
W_N : in bit ;
DAT : inout mux_vector (7 downto 0) bus;
ADR : in bit_vector (5 downto 0) ;
VDD : in bit ;
VSS : in bit
);
end component;
begin
byte0 : sr64_8a
port map(
E_N => E_N (0) ,
W_N => W_N ,
DAT => DAT (31 downto 24) ,
ADR => ADR ,
VDD => VDD ,
VSS => VSS
);
byte1 : sr64_8a
port map(
E_N => E_N (1) ,
W_N => W_N ,
DAT => DAT (23 downto 16) ,
ADR => ADR ,
VDD => VDD ,
VSS => VSS
);
byte2 : sr64_8a
port map(
E_N => E_N (2) ,
W_N => W_N ,
DAT => DAT (15 downto 8) ,
ADR => ADR ,
VDD => VDD ,
VSS => VSS
);
byte3 : sr64_8a
port map(
E_N => E_N (3) ,
W_N => W_N ,
DAT => DAT ( 7 downto 0) ,
ADR => ADR ,
VDD => VDD ,
VSS => VSS
);
end ;
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