0,0 → 1,83 |
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-- Company: |
-- Engineer: |
-- |
-- Create Date: 19:30:17 01/21/2011 |
-- Design Name: |
-- Module Name: jtagkey - Behavioral |
-- Project Name: |
-- Target Devices: |
-- Tool versions: |
-- Description: |
-- |
-- Dependencies: |
-- |
-- Revision: |
-- Revision 0.01 - File Created |
-- Additional Comments: |
-- |
---------------------------------------------------------------------------------- |
library IEEE; |
use IEEE.STD_LOGIC_1164.ALL; |
|
-- Uncomment the following library declaration if using |
-- arithmetic functions with Signed or Unsigned values |
--use IEEE.NUMERIC_STD.ALL; |
|
-- Uncomment the following library declaration if instantiating |
-- any Xilinx primitives in this code. |
--library UNISIM; |
--use UNISIM.VComponents.all; |
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entity jtagkey is |
Port ( FT_JTAG_OE : in STD_LOGIC; |
FT_TDO : out STD_LOGIC; |
FT_TDI : in STD_LOGIC; |
FT_TCK : in STD_LOGIC; |
FT_RTCK : in STD_LOGIC; |
FT_TMS : in STD_LOGIC; |
FT_DBGRQ : in STD_LOGIC; |
FT_DBGACK : out STD_LOGIC; |
FT_nSRST_OE : in STD_LOGIC; |
FT_nSRST_IN : out STD_LOGIC; |
FT_nSRST_OUT : in STD_LOGIC; |
FT_nTRST_OE : in STD_LOGIC; |
FT_nTRST_OUT : in STD_LOGIC; |
RTCK : out STD_LOGIC; |
TDO : in STD_LOGIC; |
TCK : out STD_LOGIC; |
TDI : out STD_LOGIC; |
TMS : out STD_LOGIC; |
nSRST : inout STD_LOGIC; |
nTRST : inout STD_LOGIC; |
DBGACK : in STD_LOGIC; |
DBGRQ : out STD_LOGIC; |
FT_TARGET_PRESENT : out STD_LOGIC; |
TARGET_PRESENT : in STD_LOGIC |
); |
end jtagkey; |
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architecture Behavioral of jtagkey is |
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begin |
-- buffer controlled by FT_JTAG_OE |
TDI <= FT_TDI when FT_JTAG_OE = '0' else 'Z'; |
TMS <= FT_TMS when FT_JTAG_OE = '0' else 'Z'; |
TCK <= FT_TCK when FT_JTAG_OE = '0' else 'Z'; |
RTCK <= FT_RTCK when FT_JTAG_OE = '0' else 'Z'; |
DBGRQ <= FT_DBGRQ when FT_JTAG_OE = '0' else 'Z'; |
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-- srst |
FT_nSRST_IN <= nSRST; |
nSRST <= FT_nSRST_OUT when FT_nSRST_OE = '0' else 'Z'; |
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-- trst |
nTRST <= FT_nTRST_OUT when FT_nTRST_OE = '0' else 'Z'; |
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-- inputs |
FT_TDO <= TDO; |
FT_DBGACK <= DBGACK; |
FT_TARGET_PRESENT <= TARGET_PRESENT; |
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end Behavioral; |
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