TMDS181: Handling Recommended Hard Pins when Using by Software Mode(I2C Mode)

Sadanori Kato

Guru 36540 points

Part Number: TMDS181

Hi,

Could you please tell me how to handle the recommended hard pins when using by the software mode(I2C mode) ?

Best regards,
Kato

over 8 years ago

0 Moises Garcia over 8 years ago

TI__Mastermind 23815 points

Hi Kato,

GPIO pins that are handled by I2C can be left unconnected if this is a 3 level pin or has internal pull-up/pull-down.

Regards

0 Sadanori Kato over 8 years ago in reply to Moises Garcia

Guru 36540 points

Hi Moises-san,

Thank you for your quick response.

Is my understanding correct that the settings for GPIO pins are always ignored except the pins of EQ_SEL/A0 and A1 since the I2C control mode is given priority if pulling up I2C_EN/PIN to high ?

Best regards,
Kato

0 Moises Garcia over 8 years ago in reply to Sadanori Kato

TI__Mastermind 23815 points

Hi Kato,

Yes SIG_EN, PRE_SEL, EQ_SEL(not A0), TX_TERM_CTL, SWAP/POL will be ignored when in I2C mode.

Regards

0 Sadanori Kato over 8 years ago in reply to Moises Garcia

Guru 36540 points

Hi Moises-san,

Thank you for your support.
I understood.

Best regards,
Kato

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TMDS181: Handling Recommended Hard Pins when Using by Software Mode(I2C Mode)