The team said in a news release Jackson will miss the first three games of the season. He will, however, be allowed to take part in all pre-season practices and games.
Jackson, 27, an unsigned restricted free agent who has threatened to hold out for a better contract, has two convictions for driving under the influence.
Last season, he had 68 catches for 1,167 yards and nine touchdowns in 15 games.
During his five-year NFL career with San Diego, he has 198 receptions for 3,400 yards and 25 TDs.
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