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Oakland Raiders' wide receiver Darrius Heyward-Bey (85) raises his arm as he is taken away from the game after he was injured in a play in the end zone against the Pittsburg Steelers in the second half at O.co Coliseum in Oakland, Calif., on Sunday, Sept. 23, 2012. (Ray Chavez/Staff)

Raiders wide receiver Darrius Heyward-Bey on Friday spoke for the first time publicly since suffering a concussion and strained neck against the Pittsburgh Steelers. He said he can't wait to get back on the field.

For now, Heyward-Bey is going through the league-mandated protocol for players who suffer a concussion. That means he isn't permitted to participate in contact drills or to play in a game until he passes all the tests.

Raiders coach Dennis Allen said Heyward-Bey hasn't passed the tests yet.

"Always; I want to play football," Heyward-Bey said, when asked if he is itching to play again. "This is what I do for a living. So, definitely, I'm very eager to get back."

That likely won't be until after the Raiders bye week, at the earliest. He is listed as doubtful for Sunday's game against the Denver Broncos after missing all three practices this week.

Heyward-Bey suffered his injury as a result of a helmet-to-helmet hit from Steelers safety Ryan Mundy early in the fourth quarter of the teams' game last Sunday.

The hit knocked Heyward-Bey unconscious and caused him to hit the turf face-first, which jarred his neck in a violent manner.

Heyward-Bey said he has no recollection of what happened from the time he got hit by Mundy. His first memory is of being carted off the field, at which time he raised his right arm and delivered a thumbs up to the crowd. He said he has watched the replay of the hit, without elaborating.

"That's just football," Heyward-Bey said. "I signed up to put on pads and go out there. That's what happens out there. People get hit, people get hurt. It happens."

Heyward-Bey said Mundy texted him soon after the incident. He holds no grudge toward Mundy, who wasn't penalized for the hit. Mundy was fined $21,000 by the league.

"I told him, 'Hey, it's football,' " Heyward-Bey said.