Sorry to resurrect this, but RR is pretty clear in the bulletin play Rom references.
Ball Snapped Before Ready For Play
1. After Team A has made a first down, the Umpire has placed the ball on the ground at the B-30. The Referee waves the Umpire away from the ball but before he signals the ball ready for play, snapper A55 snaps the ball.
RULING: Team A dead-ball foul for delay of game. Five-yard penalty, first and 10 at the B-35. NOTE: This is a foul between series in that it takes place before the ball is declared ready for the next series. Hence it is first and 10, not first and 15. (4-1-1, 4-1-4, 5-2-7)
Marking Ball Ready For Play
2. Late in the second or fourth quarter ball carrier A22 (a) is tackled in the field of play beyond the line to gain; (b) runs out of bounds, either beyond or short of the line to gain. In both (a) and (b) the game clock reads 2:35 when the ball is declared dead.
RULING: In both (a) and (b) the game clock is stopped, and after the ball is declared dead the 40-second clock begins its countdown. When the officials have placed the ball on the ground and moved away at the Referee’s direction, the Referee declares the ball ready for play by blowing his whistle while giving the wind-the-clock signal. (3-3-2-e-1 and -3)
The relevant rules have not changed since 2012, as far as I can tell.