DP83825I: Qestions for Pin Function

Satoshi Yone

Part Number: DP83825I

Hi, Team,

We have questions for the pin function.

1. Qestion for "Reset:1, PD; Active: O" pin.
-Are these pin Pulled-dwn during reset?
-Are there pin becomes Hz after reset?
-Is the resister value typ: 19kohm?

2. Qestion for "Active:I, PD/Active:I" pin.
-Are inside PD/PU of these pin active during the IC is working?

Best Regards,
Satoshi Yone

over 4 years ago

0 Aniruddha Khadye over 4 years ago

TI__Mastermind 18425 points

Hi Satoshi-san,

For question 1, PD does mean pull down. So that pin will be pulled low during reset. During active mode, it becomes output pin.

For question 2, which pin is this related to?

-Regards
Aniruddha

0 Satoshi Yone over 4 years ago in reply to Aniruddha Khadye

TI__Expert 3600 points

Hi, Aniruddha,

Thanks for the reply. PD is pull-down. PU is pull-up.

For question 1, You said the pin becomes output pin during active. Is there no connection with a register when pin is active?

For question 2, I mean 1/3/5/16/23/24 pins.

Best Regards,
Satoshi Yone

0 Geet Modi over 4 years ago in reply to Satoshi Yone

TI__Mastermind 26320 points

Hi Satoshi-san,

1. I am not clear on your question. Can you please elaborate ?

2. Yes, their are PU/PD during active state as defined in datasheet.

0 Satoshi Yone over 4 years ago in reply to Geet Modi

TI__Expert 3600 points

Hi, Geet,

Thanks for your follow-up. For 1, I means we would like to confirm that the IC is pulled down during the pin is output.

Best Regards,
Satoshi Yone

0 Aniruddha Khadye over 4 years ago in reply to Satoshi Yone

TI__Mastermind 18425 points

Hi Satoshi-san,

When the pin transitions to output, the straps will go away. However, depending on the pin function the pin will be pulled low until valid condition has occurred. For example, in normal operation RX_DV will be pulled low until valid data is present.

-Regards

Aniruddha

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DP83825I: Qestions for Pin Function