The move comes one week after Major Applewhite was named quarterbacks coach and Steve Russ was named linebacker coach.
The big mystery remains who will take over as offensive coordinator. Greg Robinson didn't comment on who he would name.
Cross was an assistant strength coach at Texas last year.
Desmond Robinson has bounced around the professional and collegiate ranks, having coached with NFL Europe and several Big East teams including West Virginia, Connecticut and Pittsburgh. He also has had stints at Notre Dame, Tulane and Dartmouth.
"As a running backs coach, you know about the great tradition of Syracuse University," Desmond Robinson said. "I just feel honored to be a part of it."
Desmond Robinson/Tim Cross named coaches
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