TLK10232: Communication detection

Yusuke Kiroku

Intellectual 330 points

Part Number: TLK10232

Our customer is asking us the Communication detection.

Could you kindly advice us the following two question?

Phenomenon

CPU does not detect 10Gb ethernet inactivity of ChB even if 10Gb ethernet line is disconnected. See “10Gb Ethernet circuit.pdf”.
This phenomenon occurs when registers are not optimized and disappears by optimization. See “Register Set.pdf”.
See “Channel Status1.pdf”. This table shows TLK10232 register “CHANNEL_STATUS_1” when the phenomenon occurs.

Questions

Is there any possibility for TLK10232 to indicates “CHANNEL_STATUS_1” register status above in such a case?
What kind of XAUI output waveform can be observed when the phenomenon occurs?

Thank you & Best Regards,10Gb Ethernet circuit.pdf Channel Status1.pdf Register Set.pdf

over 4 years ago

0 Rodrigo Natal over 4 years ago

TI__Mastermind 19185 points

Hi,

The customer should monitor the values for the TLK "CHANNEL_STATUS" MDIO registers, as they would reflect any LOS of signal or loss of sync or lock issues. In addition the TLK has status indication electrical output pins such as LOS which may be monitored.

Cordially,

Rodrigo Natal

HSSC Applications Engineer

0 Yusuke Kiroku over 4 years ago in reply to Rodrigo Natal

Intellectual 330 points

Natal san,

Thank you for your reply.

They ask us the following questions. Could you kindly support them?

- Why bit 13,11,10 of CHANNEL_STATUS_1 of CH B does not change when 10Gb ethernet line is disconnected?

- What kind of XAUI output waveform can be observed when 10Gb ethernet line is disconnected and CHANNEL_STATUS_1 does not Change?

			CHANNEL_STATUS_1 Bit(s)
			15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
A	Put On Cable	0x5C03	0	1	0	1	1	1	0	0	0	0	0	0	0	0	1	1
A	Put Off Cable	0x7013	0	1	1	1	0	0	0	0	0	0	0	1	0	0	1	1
B	Put On Cable	0x5D13	0	1	0	1	1	1	0	0	0	0	0	0	0	0	1	1
B	Put Off Cable	0x5C13	0	1	0	1	1	1	0	0	0	0	0	0	0	0	1	1

Best Regards,

0 Rodrigo Natal over 4 years ago in reply to Yusuke Kiroku

TI__Mastermind 19185 points

Hi,

Can you clarify exactly what is happening when "10Gb ethernet line is disconnected"? Is the Pluggable transceiver being fully removed or is it simply the optical fiber cable being removed?

I would expect for TLK XAUI side to show Ethernet idle pattern for case of line disconnected.

Regards,

Rodrigo Natal

HSSC Applications Engineer

0 Brian Zhou over 4 years ago in reply to Rodrigo Natal

TI__Guru** 114730 points

Kiroku San:

Any update?

Regards,

Brian

0 Yusuke Kiroku over 4 years ago in reply to Brian Zhou

Intellectual 330 points

Brian san,

They have understood the mechanism by following your comment.

"I would expect for TLK XAUI side to show Ethernet idle pattern for case of line disconnected."

If additional inquiry is occured, I will contact you.

Best Regards,

Interface

Interface forum

TLK10232: Communication detection