About CRS pin of TLK105L

g.f.

Other Parts Discussed in Thread: TLK105L, AM3359

Hi,

I have a question about TLK105L.

We are using TLK105L with Sitara AM3359 and the application is EtherCAT Slave.
Is "CRS/CRS_DV/LED_CFG"pin of TLK105L allow to be left floating?
Or is it must be connected to AM3359 appropriate pin(ex.PR1_MII0_CRS signal of AM3359)?

best regards,
g.f.

over 11 years ago

0 Noam Sadan over 11 years ago

TI__Intellectual 1500 points

Hi,

Please let me check this and feedback.

Thanks,
Noam

0 g.f. over 11 years ago in reply to Noam Sadan

Guru 15520 points

Hi Noam,

Thank you for the reply.
Okay, I will wait for the feedback from you.

best regards,
g.f.

0 Patrick OFarrell over 11 years ago in reply to g.f.

TI__Mastermind 31600 points

CRS_DV is required for RMII.

I cannot comment on the exact AM335x pin that is used for CRS_DV, but the connections are shown in section 14.2.6 of the AM335x Technical Reference Manual (TRM):

http://www.ti.com/lit/pdf/SPRUH73

That would be a good starting point to verify the AM335x side of the connection.

Patrick

0 g.f. over 11 years ago in reply to Patrick OFarrell

Guru 15520 points

Hi Patrick,

Thank you for the reply.

I understood the pin of AM335x side to be connected.

Let me ask little bit more about CRS.
Is CRS required for MII too?

best regards,
g.f.

0 Patrick OFarrell over 11 years ago in reply to g.f.

TI__Mastermind 31600 points

g.f.,

Yes, CRS is required for MII too.

Patrick

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About CRS pin of TLK105L