Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 25)

USB Protocol Suite User Manual 25
Voyager M3/M3i Analyzer Teledyne LeCroy Corporation
ReadyLink™ Emulation
The Teledyne LeCroy Voyager USB 3.0 Exerciser features ReadyLink Emulation Mode. The
ReadyLink feature handles all USB 3.0 link training and link flow control, allowing the
emulator to operate at full line rate and respond to the DUT as defined by the
specification. The ReadyLink Emulation Mode helps simplify development of USB 3.0 test
scenarios.
By default, ReadyLink Emulation Mode automatically manages:
 Header Packet Acknowledgements (L_GOOD_n)
 Buffer Credit (L_CRD_x)
 SKIPs at required intervals (SKP)
 Link Synchronization
 Responds to LFPS (Polling.LFPS)
 Responds to polling sequence (Polling.RxEQ)
 Responds to TS1 / TS2 handshaking sequence
 Responds to SS.Inactive (with RX.Detect)
 Power Management Link Commands
 Responds to LGO_Un (with LAU)
 Responds to LAU (with LMPA)
Test scripts can customize ReadyLink Emulation Mode to include error scenarios, such as:
 Header LBADs
 Invalid link commands
 8B10B / CRC Error
 Running Disparity Error
 Corrupt Link Commands
 Corrupt Flow Control (Wrong L_CRD_x, Wrong L_GOOD_n, Drop L_Good_n)
 Corrupt Header Packet acknowledgement (Send LBAD, LRTY)
 Corrupt Packet Framing (SHP, SDP, END)
At the packet level, you can send customized data payloads anywhere within the stream
to insert logic errors, perform corner‐case, or do stress testing. Commands, such as the
Set ErrWrongLCRD command, allow link‐layer error injection anywhere within the script.
1.2.6 Notes on LFPS Signals
Voyager Exerciser requires received “Ping” LFPS signals to be a minimum of
150 nanoseconds to be reliably recognized.
Voyager Analyzer can recognize “Ping” LFPS signals above 60 nanoseconds and report
their durations to ±15 nanoseconds of accuracy.