can you group together pins by their functions?
for example for Power, 3v3, gnd_1 gnd_2 etc
NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function.
Yes. I’ll assign each physical pin to exactly one broad functional group based on its primary datasheet function, with no duplicates, and keep Section matched to Pin Group.
Grouped all 32 pins exactly once by primary function:
Power: 2
Reference: 6
Control: 4
Audio Inputs: 12
Audio Outputs: 8
Also added datasheet-backed pin descriptions/types, matched each Section to its Pin Group, and assigned consistent orientations and ordering. Verified pins 1–32 are present once each with no duplicates; note that this dual-supply IC has V+ and V− but no GND pin. The official Nisshinbo datasheet URL is now set, and the SSOP-32 footprint/pin mapping matches the documentation.