DP83869HM: What is the default indication of LED_0, LED_1 and LED_2?

joe lindula

Part Number: DP83869HM

Hello, without writing to any of the configuration registers on the DP83869HM what does LED_0, LED_1, and LED_2 mean? I'm having trouble with my board and LED0 and LED1 are on continuously. LED2 does blink when I transmit data and when not transmitting the led fill occasionally blink.

I have been looking on page 66 of the 2022 Datasheet and I don't understand the table:

Is it saying that hex(6) is the setting for each LED output?

I don't understand, can someone give me a hand please?

Thank you

over 2 years ago

0 joe lindula over 2 years ago

Mastermind 6940 points

I see on page 46 table 9.5.1.3:

Does it make sense that LED1 and LED0 are continuously on?

Thank you

+1 Gokul Koraganji over 2 years ago in reply to joe lindula

TI__Mastermind 19250 points

Hi Joe,

The default value of register 0x18 should be 0x6150.

So, by default, LED_0 should turn on when the device is linked-up.
LED_1 should turn on only if the link established in 1000M link.
LED_2 should turn on when there's activity.

Once, DP83869HM is linked up in 1G mode, LED_0, LED_1 are always on. LED_2 will be on when there is activity. It might blink if ethernet interface doesn't have continuous activity.

--
Regards,
Gokul.

0 joe lindula over 2 years ago in reply to Gokul Koraganji

Mastermind 6940 points

Thank you very much.

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DP83869HM: What is the default indication of LED_0, LED_1 and LED_2?