DP83822 RGMII

yonglai song

Hi :

How to configure the DP83822 registers in RGMII mode, and the DP83822 supports 125MHz clock to the MAC, how can I set the registers? Thanks very much.

over 5 years ago

0 Cecilia Reyes over 5 years ago

TI__Genius 9920 points

Hello,

RGMII can be configured through bootstraps, refer to the Programming section in our datasheet. You may also enable from register 0x0017

To change clock source, please refer to Table 80. 0x0462 IO MUX GPIO Control Register #1 (IOCTRL1)

Thanks,

Cecilia

0 yonglai song over 5 years ago in reply to Cecilia Reyes

Prodigy 20 points

Hi Cecilia Reyes:

Thanks for your reply, I set the value 0x241 to the register 0x17, the value 0x63 to the register 0x462, am I right? Thank you very much.

0 Cecilia Reyes over 5 years ago in reply to yonglai song

TI__Genius 9920 points

Hello,

Yes I believe that should enable RGMII you may read back the registers to confirm the mode it is in.

Thanks,

Cecilia

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DP83822 RGMII