Dear All,
I am using a external supervisory circuit for DSP which has a VDD(3.3) and DSP core voltage(1.3) monitoring. Also it has an watchdog input, which needs to be toggle at particular time interval and is connected from DSP GPIO. RESET pin of supervisory is connected to DSP RESET pin and I have a jumper in this line. Currently, I have to remove jumper whenever I need to flash the DSP, because in case of flashing DSP WDI will be stopped at the time of flashing and DSP will be in reset state if jumper is not removed. This scheme is good in lab testing but in production point of view it involved a manual interruption.
Please suggest some mechanism, so that whenever I connect JTAG, this reset pulse should not reach DSP and once flashing is done it should work normally.
Amit
I am using a external supervisory circuit for DSP which has a VDD(3.3) and DSP core voltage(1.3) monitoring. Also it has an watchdog input, which needs to be toggle at particular time interval and is connected from DSP GPIO. RESET pin of supervisory is connected to DSP RESET pin and I have a jumper in this line. Currently, I have to remove jumper whenever I need to flash the DSP, because in case of flashing DSP WDI will be stopped at the time of flashing and DSP will be in reset state if jumper is not removed. This scheme is good in lab testing but in production point of view it involved a manual interruption.
Please suggest some mechanism, so that whenever I connect JTAG, this reset pulse should not reach DSP and once flashing is done it should work normally.
Amit
