Autumn raspberries fruit on new canes each year, so basically you cut the lot down at the end of fruiting, and it is generally said no later than January. Though I was a bit late (like March - they were already growing again) last winter and have still got a reasonable crop.

If you use the description "cut down all fruited canes after fruiting", that does for both autumn and summer raspberries. However the reality of cutting the lot down (autumn), vs, leaving the new green canes (summer) is in practice different.