====== Pinouts of the CPU ======

Logitech wheels use a factory programmed version of the ST 72632 embedded processor. The chip has builtin USB controller and several A/D converters and I/O pins. You can find a datasheet of this chip from ST webpage.

Buttons are numbered from top to bottom on the table below.. So Left3 is the unused white button in the modified Momo wheel.

^Pin number 	^Momo function 	^Force GP function ^
|1 	|Vdd 	|Vdd       |
|2 	|OscOut 	|OscOut  |
|3 	|OscIn 	|OscIn    |
|4 	|Vss 	        |Vss        |
|5 	|Gear+ 	|Left1     |
|6 	|Left1 	|Gear+   |
|7 	|Left2 	|Gear-    |
|8 	|/Reset 	|/Reset    |
|9 	|NC 	        |NC |
|10 	|Power enable |NC |
|11 	|Pedals1 	|Pedals1 |
|12 	|Test 	|Test |
|13 	|Pedals2 	|Pedals2 |
|14 	|LED1 	|Pedals3 |
|15 	|Force control |Force control |
|16 	|LED2 	|Pedals4 |
|17 	|Steering input 	|Steering input |
|18 	|Steering control 	|Steering control |
|19 	|Power enable2 	|Power enable2 |
|20 	|Force control 	        |Force control |
|21 	|Right1 	|Right2 | 
|22 	|Right2 	|Left2 |
|23 	|Right3 	|Right1 |
|24 	|Left3 	|Power enable |
|25 	|NC 	        |NC |
|26 	|NC  	|NC |
|27 	|NC  	|NC |
|28 	|Gear- 	|NC |
|29 	|Force control? 	|Force control? |
|30 	|Vssa 	|Vssa |
|31 	|USBDP 	|USBDP |
|32 	|USPDM 	|USBDM |
|33 	|USBVcc 	|USBVcc |
|34 	|Vdda 	|Vdda |

====== Pinouts of the white 11-pin connector in Momo Force: ======

^Pin number 	^Original function 	^Modified function  ^
|1 	|Gear- 	|NC |
|2 	|Left3 	|NC |
|3 	|Left2 	|Gear- |
|4 	|Left1 	|Gear+ |
|5 	|Gear+ 	|Left1 |
|6 	|Right3 	|Right1 |
|7 	|Right2 	|Left2 |
|8 	|Right1 	|Right2 |
|9 	|LED1 	|NC |
|10 	|LED2 	|NC |
|11 	|GND 	|GND |

====== Wire colours in the white connector: ======

^Colour 	^Function ^
|Gray 	|GND |
|Light blue |LED2 |
|Pink 	|LED1 |
|Brown 	|Right2 |
|White 	|Left2 |
|Purple 	|Right1 |
|Green 	|Left1 |
|Yellow 	|Gear+ |
|Red 	|Gear- |
|Dark blue  |Right3 |
|Black 	|Left3 |

If you have any comments or suggestions, feel free to mail me at [[zuikkis@zuikk.is]]

-- Zuikkis