Nec B58944 Datasheet ^new^ Free

If you are repairing a device that contains this NEC chip, you cannot guess the pinout. Guessing leads to short circuits, magic smoke, and a dead PCB. The datasheet provides:

Because it's custom, NEC/Renesas will not have a public datasheet. You will need to search by application. nec b58944 datasheet Free

(but search by possible correct part):