JTAG cannot recognize DSP processing

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JTAG cannot recognize DSP processing [Copy link]

If JTAG cannot recognize TI's DSP, there may be the following reasons: If JTAG cannot recognize TI's DSP, there may be the following reasons:
1. There is a problem with the emulator;
2. There is a problem with the emulator driver;
3. There is a problem with the target board;
Here, we only discuss the situation where the emulator is fine and the emulator driver is installed correctly, but JTAG cannot connect due to the target board:
1. Check whether the power supply (Core voltage, IO voltage) of the DSP is correct? Does the ripple meet the requirements? Does the power-on sequence meet the requirements?
2. Check whether the power supply of the DSP is always correct? Does the level meet the requirements?
3. Check whether the system reset signal of the DSP is normal? Is the connection of the NMI pin correct? Are all the input pins related to the DSP connected correctly?
4. Is the measurement of the CLKOUT of the DSP correct? When measuring power-on, will the DSP chip select boot-Flash?
5. Measure the EMIF bus of the DSP. Any two data lines or address lines should not be short-circuited or connected incorrectly. If conditions permit, disconnect the load on the EMIF bus and then perform the JTGA connection test.
6. If there is an FPGA device on the EMIF bus of the DSP, you need to download the FPGA program first. All FPGA signals related to the DSP can be defined as inputs.
7. Set up CCS correctly. After opening CCS, click reset in debug. If there is no error, there is generally no problem with the driver.
8. Reset the DSP manually multiple times and then try to connect, or restart CCS and the computer if the connection fails.