PIN MUXING

Martin Zeman

Other Parts Discussed in Thread: TMS570LS3137

Hello,

I'm working on a project that utilizes the FlexRay controller and the information about where the FlexRay pins are located seems to

conflict in different cources. The datasheet to TMS570LS3137 (http://www.ti.com/lit/ds/spns162/spns162.pdf) shows that the pin numbers

are 1; 2; 5; 126; 133 and 142. It also says that the pin layout picture depicts only the default function. So I would assume that FR

is the default function, since it's in the picture.

But if I look into the User's guide (http://www.ti.com/lit/ug/spnu499/spnu499.pdf) and go to the IOMM part there it says that default

functions of pins 1 and 2 are GIOB[3] and GIOA[0]. Ass a matter of fact I can't find FR anywhere in the IOMM PINMMRnn table.

So which pins belong to the FlexRay and how do I enable them?

Thanks for any advice

over 13 years ago

0 Luc Baudoin over 13 years ago

TI__Intellectual 1125 points

Hello Martin,

The flexray pins are not muxed so the IOMM section is irrelevant and the pins of the datasheet are the correct pins to use.

Also for the mux table the first 2 rows don't map to pin 1 and 2 but are just the muxing for pins with default function GIOB[3] and GIOA[0]. To find these pins on the pin map it is necessary to look for them on the datasheet.

Best regards,

Luc

0 Martin Zeman over 13 years ago in reply to Luc Baudoin

Intellectual 820 points

Ah, that clears it.

Thanks a lot

Arm-based microcontrollers

Arm-based microcontrollers forum

PIN MUXING