Hello,
you are right, the 2SJ3018-001311 enters in the 'poor jack usage' picture (Fig. 24 of the TS3A225E Datasheet), the reason is that the RING1 is detected (not the TIP).
Nevertheless, refering to 2SJ3018-001311, when you plug a connector in the jack, #4 contact shorts with #5.
So, simply connect on your board #4 to AVDD and #5 to DET_TRIGGER with the suggested 100kOhm PD resistor.
Mauro Cleris