DP83TC812S-Q1: TC-10 WUP

Kung Poyuan

Part Number: DP83TC812S-Q1

Tool/software:

I would like to ask how to send a WUP to the DP83TC812. WUP is not an Ethernet packet; it seems to be just a frame at the OSI Layer 1 (physical layer), not an Ethernet packet at the MAC layer

over 1 year ago

0 Kung Poyuan over 1 year ago

Prodigy 241 points

BTW The system needs to implement the TC-10 Wakeup., When the DP83TC812S is in sleep mode, is the 50MHz RMII_REFCLK necessary? Can it be turned off to save power?

0 Melissa Chang over 1 year ago in reply to Kung Poyuan

TI__Genius 14006 points

Hi Kung,

For WUP, it depends on what your link partner to the DP83TC812 is. If it is also a DP83TC812, WUP transmission is done after a local wake-up without any manual intervention provided (it will happen as soon as you plug in the link partner).

For the 50 MHz RMII REFCLK, you should keep it on during sleep. During TC10 sleep, you can disable all power supplies except for VSLEEP to save power.

Best regards,

Melissa

0 Kung Poyuan over 1 year ago in reply to Melissa Chang

Prodigy 241 points

May I ask, if the link partner is a PC paired with a standard 100-Base T1 module, what kind of packets does the PC need to transmit?

0 Melissa Chang over 1 year ago in reply to Kung Poyuan

TI__Genius 14006 points

Hi Kung,

Your 100Base-T1 module must support TC10 to be able to wakeup the DP83TC812-Q1 from TC10 sleep. Can you confirm that it supports TC10?

It should happen directly once you connect the module to our DP83TC812-Q1. However, I would confirm with your 100Base-T1 module vendor.

Best reagrds,

Melissa

0 Kung Poyuan over 1 year ago in reply to Melissa Chang

Prodigy 241 points

Understood. If the LINK PARTNER is the DP83TC812 (remote side), a packet needs to be sent to wake up the DP83TC812 (host side). Normally, the cable remains connected and does not disconnect. In this case, can the local wake-up be performed on the remote side?

+1 Melissa Chang over 1 year ago in reply to Kung Poyuan

TI__Genius 14006 points

Hi Kung,

Yes, you can perform local wakeup on the remote side. For local wake, you should pull the wake pin on the DP83TC812 HIGH.

Best regards,

Melissa

Interface

Interface forum

DP83TC812S-Q1: TC-10 WUP