NFL Blitz 20-03:
Icon Codes:
The following codes are entered by pressing the L2, R2, and X buttons the number of times shown, then pressing the D-pad in the direction indicated. 

For example, to unlock the Brew Dawgs team the code is 4-3-2 Down. You would press L2 4 times, R2 3 times, and X 2 times, then press Down. 

Effect   :   Code 
Allow out of bounds: 2-1-1 Left 
Always QB: 2-2-2 Left 
Always receiver: 2-2-2 Right 
Arctic Station: 0-3-4 Down 
Armageddon team 5-4-3: Right 
Auto-Passing icon: 0-0-3 Up
Big feet: 0-2-5 Left
Big heads: 2-0-0 Right 
Big head teams: 2-0-3 Right
Bilders team: 3-1-0 Up 
Brew Dawgs team: 4-3-2 Down 
Central Park: 0-3-3 Right 
Chimp mode: 0-2-5 Up 
Chrome ball: 0-3-0 Down 
Classic ball: 0-3-0 Left 
Clear weather: 1-2-3 Right 
Crunch Mode team: 4-0-3 Right 
Disable Auto-Passing icon: 0-0-3 Down
Extra time: 0-0-1 Right 
Extra play for offense: 3-3-3 Down 
Faster running: 0-3-2 Left 
Fast passes: 2-4-0 Left 
Ground fog: 2-3-2 Down 
Gsmers team: 5-0-1 Up 
Huge heads: 1-4-5 Left 
Midway team: 2-5-3 Right 
More code entry time: 2-1-2 Right 
More fumbles: 3-4-5 Up 
Neo Tokyo team: 3-4-4 Down 
No CPU assist: 0-1-2 Down
No first downs: 2-1-0 Up 
No highlighting receivers: 3-2-1 Down 
No interceptions: 3-5-5 Up 
No punting: 1-4-1 Up 
No random fumbles: 5-2-3 Down 
No replays: 5-5-4 Right 
Noftle mode: 3-2-5 Up 
Power loader: 0-2-5 Right
Power-up defense: 4-2-1 Up 
Power-up Linemen: 5-2-1 Up 
Power-up offense: 4-1-2 Up 
Rollos team: 2-5-4 Up 
Show more field: 0-2-1 Right
Showtime mode: 3-5-1 Right 
Smart CPU teammates: 3-1-4 Down
Super Blitzing: 0-5-4 Up 
Super field goals: 1-2-3 Left
Tournament mode: 1-1-1 Down 
Training Grounds: 0-3-5 Up 
Unlimited turbo: 4-1-5 Up 
Weather-- Rain: 5-5-5 Right 
Weather-- Snow: 5-5-5 Left 

Unlock Teams:
Enter the following PINs to unlock the corresponding team. 

1985: BEAR 
1974: CLOWN 
1996: COWBOY 
1997: DEER 
1972: DOLPHIN 
1981: EAGLE 
1999: HORSE 
2002: PATRIOT 
1963: LION 
1966: PINTO 
2001: PIRATE 
2000: RAM 
1977: TIGER