| 0,0 → 1,83 |
|---|
| ---------------------------------------------------------------------------------- |
| -- 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; |
| |
| 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; |
| |
| architecture Behavioral of jtagkey is |
| |
| 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'; |
| |
| -- srst |
| FT_nSRST_IN <= nSRST; |
| nSRST <= FT_nSRST_OUT when FT_nSRST_OE = '0' else 'Z'; |
| |
| -- trst |
| nTRST <= FT_nTRST_OUT when FT_nTRST_OE = '0' else 'Z'; |
| |
| -- inputs |
| FT_TDO <= TDO; |
| FT_DBGACK <= DBGACK; |
| FT_TARGET_PRESENT <= TARGET_PRESENT; |
| |
| end Behavioral; |
| |