1. FC-PI-5, FC-FS-3, and 16GFC bob.nixon@emulex.com
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

2. So, we’re trying to dump them on FC-PI-x…
Hot Potatoes
In the course of developing the 16GFC protocols, several things were determined to be out of scope for an FC-1/FC-2 standard
So, we’re trying to dump them on FC-PI-x…
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

3. Bit Sync and Loss-of-Signal
“Bit Synchronization is defined in FC-PI-x.” (FC-FS-3 6.2)
“A receiver may provide a Loss-of-Signal check”, though it is optional (FC-FS )
PI has always done that for us, please do the same for 16GFC.
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

4. Selection of Transmission Code
“An FC-0 standard (e.g., FC-PI-5) may specify the use of the 8B/10B transmission code as its frame transfer transmission code.” (FC-FS )
“An FC-0 standard (e.g., FC-PI-5) may specify the use of the 8B/10B transmission code as its frame transfer transmission code.” (FC-FS )
This is new, there was never a choice before.
FC-PI-5 should select 64B/66B for each physical variant that does NOT use 8B/10B.
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

5. If Transmission Code is 8B/10B
“An FC-0 standard (e.g., FC-PI-5) may specify the use of Emission Lowering Protocol when using the 8B/10B transmission code.” (FC-FS )
“An FC-0 standard (e.g., FC-PI-5) may specify the use of Frame Scrambling when using the 8B/10B transmission code.” (FC-FS )
FC-PI-5 should select for each 8B/10B physical variant that uses it
Frame Scrambling
Emission Lowering Protocol
(default is neither will be used)
PI has been doing this for 8GFC, nothing new needed.
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

6. If Transmission Code is 64B/66B
“An FC-0 standard (e.g., FC-PI-5) may specify the use of the Transmitter Training Signal….” (FC-FS )
Implicitly, Speed Negotiation support depends on physical variant specs. I don’t think we have bothered to explicitly say yes or no per physical variant before, so I don’t see that we need to start now.
FC-PI-5 should select or reject for each 64B/66B physical variant
Transmitter Training Signal
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

7. If Speed Negotiation is supported…
…and the variant does not take the 1 millisecond default
“For any variant that does not specify a Transmitter Stabilization Time, including those specified in FC-PI-2, FC-PI-3, FC-PI-4, 10GFC, the Transmitter Stabilization Time shall be one millisecond.” (FC-FS )
“For any variant that does not specify a Receiver Stabilization Time, including those specified in FC-PI-2, FC-PI-3, FC-PI-4, 10GFC, the Receiver Stabilization Time shall be one millisecond.” (FC-FS )
FC-PI-5 should specify for each physical variant that can not stabilize a signal in one millisecond:
Receiver Stabilization Time
Transmitter Stabilization Time
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

8. If Transmitter Training Signal is supported
“Transmitter training negotiates either or both of two capabilities between the transmitters and receivers connected by a link:
a) values of transmitter equalizer coefficients that result in most reliable signal reception across the link; and
b) use of FEC.”
(FC-FS-3 9.2)
FC-PI-5 should select, reject, or make optional for each physical variant that supports the Transmitter Training Signal
training of transmitter equalizer coefficients
Forward Error Correction (FEC )
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

9. If training of transmitter equalizer coefficients is supported
“The use of each coefficient is specified by FC-PI-x for each FC-0 variant that supports transmitter training. Each coefficient in the model has a minimum value, a maximum value, a default value, a preset value, and a step size by which it may be adjusted. These values are specified by FC-PI-x for each FC-0 physical variant that supports transmitter training.” (FC-FS-3 9.2)
FC-PI-5 should specify for each physical variant that supports coefficient training, the following for coefficients 0, 1, and 2:
What it does (if anything)
Its minimum value
Its maximum value
Its default value
Its preset value
Its step size
T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC

10. That ought to do it Questions? T11/09-506v0 - 8/27/2009
FC-PI-5, FC-FS-3, and 16GFC