Viavi Xgig User Manual page 284

Chapter 13, Configuring Xgig TraceView
Table 20: SAS -2, Speed Negotiation Decodes (continued)
Speed Negotiation Decode
Valid Train-SNW (6.0 Gbps w/o
SSC) detected
Invalid Train-SNW (6.0 Gbps w/o
SSC) detected
RCDT (Rate Change Delay Time)
within spec
RCDT (Rate Change Delay Time)
outside spec
SNTT (Speed Negotiation
Transmit time) within spec
SNTT (Speed Negotiation
Transmit time) outside spec
ATT (Actual Training time) within
spec
ATT (Actual Training time) outside
spec
SAS Phy reset problem
Speed Negotiation Begin
Speed Negotiation End
SATA speed negotiation failed
SATA 1.5 Gbps speed detected
SATA 3.0 Gbps speed detected
270
Event Description
This event is set if a SAS-2 phy has transmitted at least 4
TRAIN_DONE patterns and received at least 1 TRAIN_DONE
primitive at 6.0 Gbps rate within MTT (Maximum Training time ~ 20
ms), during a Train-SNW speed negotiation window with SSC
disabled.
This event is set if a phy has not transmitted at least 4 TRAIN_DONE
patterns or not received 1 TRAIN_DONE at 6.0 Gbps rate within MTT
(Maximum Training time ~ 20 ms), during Train-SNW speed
negotiation window with SSC disabled.
A SAS device shall send D.C Idle for 750000 OOBI (nominal value =
500 us) during the RCDT phase of a SAS speed negotiation window
time. This event is set when the measured RCDT value lies within this
range: 492.5 us < RCDT < 507.5 us.
A SAS device shall send D.C Idle for 750000 OOBI (nominal value =
500 us) during the RCDT phase of a speed negotiation window time.
This event is set when the measured RCDT time falls within this range
RCDT time <= 492.5 us or RCDT time >= 507.5 us.
A SAS device shall send ALIGN(0) or ALIGN(1) for 163840 OOBI
(nominal value = 109.2 us) during the SNTT phase of a SAS speed
negotiation window time. This event is set when the measured SNTT
time lies within this range: 102.5 us < SNTT < 117.5 us
A SAS device shall send ALIGN(0) or ALIGN(1) for 163840 OOBI
(nominal value = 109.2 us) during the SNTT phase of a SAS speed
negotiation window time. This event is set when the measured SNTT
time <= 102.5 us or SNTT time >= 117.5 us.
This event is set when the measured value of ATT is within TLT
(Training Lock Time) which is defined to be 28497920 OOBI or ~
18.998613 ms.
This event is set when the measured value of ATT is not within TLT
(Training Lock Time) which is defined to be 28497920 OOBI or ~
18.998613 ms.
This event is set when SAS-2 phy reset problem condition is detected
on a SAS link.
This event marks the beginning of the Speed Negotiation window.
This event marks the end of the Speed Negotiation window.
This event is set when speed negotiation is not successful on a SATA
link.
This event is set when ALIGN(0) primitives are detected from host and
drive at 1.5 Gbps on a SATA link.
This event is set when ALIGN(0) primitives are detected from host and
drive at 3.0 Gbps on a SATA link.
Filter And Hide
Xgig Analyzer User's Guide