Pin Name Expl. 1 VDD Power Supply +5V DC 2 PHI System Clock 3 /WR Write 4 /RD Read 5 /CS Chip Select 6-21 A0-A15 Address Lines 22-29 D0-D7 Data Lines 30 /RES Reset signal 31 VIN External Sound Input 32 GND Ground
Pin numbers are arranged as 2,4,6 in upper row, 1,3,5 un lower row; outside view of gameboy socket; flat side of socket upside. Colors as used in most or all standard link cables, because SIN and SOUT are crossed, colors Red and Orange are exchanged at one cable end.
Pin Name Color Expl. 1 VCC - +5V DC 2 SOUT red Data Out 3 SIN orange Data In 4 P14 - Not used 5 SCK green Shift Clock 6 GND blue Ground
Note: The original gameboy used larger plugs (unlike pocket gameboys and newer), linking between older/newer gameboys is possible by using cables with one large and one small plug though.
Stereo Sound Connector (3.5mm, female)
Pin Expl. Tip Sound Left Middle Sound Right Base Ground
External Power Supply