Joe Black
Junior Member level 1
jtagsel
It looks like setting JTAGSEL to high puts AT91SAM7S64 core into a reset state. Is it a valid behavior or I have some problems with my pcb/hardware?
I would like to monitor and manipulate with signals on AT91SAM7S64 pins to do some board testing using a boundary-scan software. So I set JTAGSEL high to select JTAG boundary-scan compliant TAP. I have a program in ARM flash which do blinking with some leds on the board. Immediately after setting JTAGSEL high leds stop blinking, when I set JTAGSEL back to low, the blinking sequence starts from the very beginning like the program was restarted.
AT91SAM spec says nothing about JTAGSEL and reset connection.
It looks like setting JTAGSEL to high puts AT91SAM7S64 core into a reset state. Is it a valid behavior or I have some problems with my pcb/hardware?
I would like to monitor and manipulate with signals on AT91SAM7S64 pins to do some board testing using a boundary-scan software. So I set JTAGSEL high to select JTAG boundary-scan compliant TAP. I have a program in ARM flash which do blinking with some leds on the board. Immediately after setting JTAGSEL high leds stop blinking, when I set JTAGSEL back to low, the blinking sequence starts from the very beginning like the program was restarted.
AT91SAM spec says nothing about JTAGSEL and reset connection.
