Are the pcbs identical for caravan and caravel chi...
# caravan
j
Are the pcbs identical for caravan and caravel chips? Just curious what the signal path looks like for the io_analog ports (unique to caravan) on the pcb. Do they feed into an adc or do they just have a connector running off-chip (hopeful for the latter). Thanks.
r
Might be wrong, but I believe the PCBs they provide are nothing more than breakout boards, so there should be nothing inbetween the bump and the pin
j
Thanks for your response. Oh, I assumed there was more to it for the sake of the digital guys. But looks like you're right. I just found this to confirm:

https://github.com/efabless/caravel_board/blob/main/hardware/caravel_breakout/Caravel_breakout.png

for others who find themselves here...
r
Yeah looks like it just has some decap
👍 1
j
Looks like it depends if your tapeout returns WCSP or QFN: https://github.com/efabless/caravel_board/blob/main/docs/Caravel_schematic.pdf

https://github.com/efabless/caravel_board/blob/main/docs/caravel_board_front.jpg

r
Only chipIgnite (paid) runs return QFN, so should be no worry
👍 1
All Google MPW runs are WCSP