How to Select The SION Bit in Different Conditions?

tony_l_cai · ‎03-22-2015

Hi,all

Maybe I dont know how to use the SION Bit, could you tell me what conditons do we need to set SION bit? please give me an example,3Q~

igorpadykov · ‎03-22-2015

Hi tony

SW Loopback (SION) – the SION bit (SW Input On in IOMUXC_SW_MUX_CTL)

override the regular PAD functionality and forces the input path to

be active regardless of the value driven by the corresponding

module. It can be used for:

Loop Back - Module X drives the PAD and also receive PAD value as an

input. Required by I2C,SDHC modules.

GPIO Capture - Module X drives the PAD and the value is captured by GPIO.

Loop Back to module Y - Module X drives the PAD and module Y also receives

PAD value as an input. This can be used for driving module Y input without

connecting a real device on board.

Best regards

igor

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