| Function | Wire # | 50-header pin # |
|---|---|---|
| DI0 | 31 | 37 |
| DI1 | 29 | 38 |
| DI2 | 27 | 39 |
| DI3 | 25 | 40 |
| DI4 | 23 | 41 |
| DI5 | 21 | 42 |
| DI6 | 19 | 43 |
| DI7 | 17 | 44 |
| DI8 | 47 | 25 |
| DI9 | 45 | 26 |
| DI10 | 43 | 27 |
| DI11 | 41 | 28 |
| DI12 | 39 | 29 |
| DI13 | 37 | 30 |
| * DI14 | 35 | 31 |
| * DI15 | 33 | 32 |
| MOD SEL A | 15 | 13 |
| MOD SEL B | 13 | 14 |
| MOD SEL C | 11 | 15 |
| MOD SEL D | 9 | 16 |
| INT EN | 16 | 17 |
| ST CONV | 48 | 18 |
| DATA RDY | 32 | 19 |
| Ground | 50 | 50 |
* Servo MD Bits.