TMS570LS1224: tms570ls1224 only can burn program one times

Jonny Jiang

Part Number: TMS570LS1224
Other Parts Discussed in Thread: TMS570LS1227

Tool/software:

I used tms570ls1227 to design the main control board before, and later changed to tms570ls1224 because of gpio. After using 1224, when burning the program, there was a phenomenon that i could burn for the first time, and then could no longer connect the chip, but 1227 did not have this phenomenon,The following is my burning process 1 and error 2：

over 1 year ago

0 jagadish gundavarapu over 1 year ago

TI__Guru 69891 points

Hi Jonny,

I am suspecting one reason:

By default, the clock monitoring circuit on TMS570LS1224 device is enabled. The clock monitoring circuit checks for the main oscillator frequency to be within a certain range using the HF LPO as a reference. If the HF LPO (clock source #5) is disabled with the clock monitoring still enabled, the clock monitor will indicate an oscillator fault. This fault will reset the device repeatedly and block you from connecting JTAG to the device.

Please try this procedure to let CPU enter a debug state:
1. Open the target configuration window, and launch the selected the configuration
2. Switch to debug window
3. Press the reset (nRST) button and hold it
4. Click “Connect Target” immediately after you release the nRST button
5. The board should be connected after couple tries

Please refer below threads for more details:

(+) TMS570LS1227: The interface between TMS570LS1227 and JLINK emulator JTAG cannot be connected - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

(+) CCS/TMS570LS1224: configure the systemREG1 about OSCIN - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

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Thanks & regards,
Jagadish.