Customizing the JTAG
The core has parameters so you can customize its function. You set the parameters in the General tab of the core's IP Configuration window.
| Parameter | Options | Description |
|---|---|---|
| IDCODE Instruction | – | Defines the 5-bit instruction to read the IDCODE
value. Default: 5'h5 |
| IDCODE Value | – | Defines the 32-bit IDCODE value. Default:
32'h006A0A79 |
| Enable JTAG_USER1 | Enable | Enables JTAG User TAP 1. Default: Enable |
| JTAG_USER1 Instruction | – | Defines the 5-bit instruction to connect to the JTAG User TAP
1. Default: 5'h8 |
| Enable JTAG_USER2 | Enable, Disable | Enable: Enables JTAG User TAP 2. Disable: Disables JTAG User
TAP 2. Default: Disable |
| JTAG_USER2 Instruction | – | Defines the 5-bit instruction to connect to the JTAG User TAP
2. Default: 5'h9 |
| Enable JTAG_USER3 | Enable, Disable | Enable: Enables JTAG User TAP 3. Disable: Disables JTAG User
TAP 3. Default: Disable |
| JTAG_USER3 Instruction | – | Defines the 5-bit instruction to connect to the JTAG User TAP
3. Default: 5'hA |
| Enable JTAG_USER4 | Enable, Disable | Enable: Enables JTAG User TAP 4. Disable: Disables JTAG User
TAP 4. Default: Disable |
| JTAG_USER4 Instruction | – | Defines the 5-bit instruction to connect to the JTAG User TAP
4. Default: 5'hB |
| BYPASS Instruction | – | Defines the 5-bit instructions to enable BYPASS. Default:
5'h1F |