• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 241 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MMC1 pin configuration out not used on PINMUX Utility

scettindro6251
Prodigy 180 points
Other Parts Discussed in Thread: AM3354

Hi,

I'm Designing a board with the AM3354 with two ethernet interfaces, nand interface, MMC0 interface.

I would like to configure the MMC1 as follows:

MMC1_D0 connected to GPIO3_9

MMC1_D1 connected toGPIO3_10

MMC1_D2connected  toGPIO2_18

MMC1_D3 connected to GPIO2_19

MMC1_CLK  connected to GPIO1_30

MMC1_CMD connected to GPIO1_31

This configuration is not present on the Pin Mux utility. Is it valid anyway?

The alternative is to use 

MMC1_CLK , MMC1_CMD 

muxed with the MDIO signals.

is it possible to have the MDIO interface and the MMC1_CLK and MMC1_CMD signals on the same GPIO? Or must I make a sort of Muxing?

Regards

Sandro

  • 0
    TI__Guru**** 393215 points
    Hi Sandro,
     
    The idea behind pinmuxing is that different functions can be output on a pin. This configuring is normally only done once at start-up time. In your case I would definitely say that MDIO and MMC1 can not be output on the same GPIO.
     
    The configuration that you suggest is OK, even if not preset in the Pinmux utility.
     
    Best Regards
    Biser