Combine water and salt in large saucepan, bring to a boil. Add pasta and boil uncovered for 8 minutes, stirring occasionally. Add broccoli and cook uncovered for 2 to 4 minutes, stirring occasionally until pasta is tender but firm and broccoli is tender crisp. Drain. Return to pot and cover to keep warm. Heat butter in separate saucepan on medium. Add flour. Heat and stir for one minute. Add broth, whisking constantly until smooth. Add cream cheese. Whisk until smooth. Add scallops and pasta mixture. Cook for 2 to 4 minutes and serve.