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Any reason why SYSBOOT value would change unexpected ?
Part Number: AM3359
I have Connected SYSBOOT[7:0] pins of AM3359 to either pull-up to 3.3V with 100K or pulldown with 10K to GND as per boot requirement!
When I tried to "Connect Target" using XDS 100v2 in CCS, the SYSBOOT registers gets red wrongly in tool !
It does not follow the external pull-up/pull down!
I went on randomly decreasing value of resistors for some pins, it ended up in fixing the issue temporarily: as detailed below
SYSBOOT pin pulled HIGH (3.3V) directly (without 100K) and SYSBOOT pin pulled DOWN (GND) without 10K
But, this will not be sufficient as I have multiplexed these pins with FPGA. So I need PULLUP/DOWN after AM335x boot is over.
Please help me to fix it without removing PULLUP/DOWN
The most likely reason is that you have external components (FPGA?) and/or voltages biasing the SYSBOOT signals. Please recheck your design.
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