Teledyne LeCroy SAS Sample Test Suite - Manual (Page 56)

SAS Sample Test Suite
Connection Errors (Test Group D) 56
Figure 21 - Credit Timeout
1 ms
Timer
ACK
SSP Link HW
Target has Data Frame to transmit
but no RRDY credits left
DONE(CREDIT TIMEOUT)
CLOSE
1 ms Timeout Notification
Initiator/Test Station Target Primitive Logic Target Protocol Logic
RRDY
Data Frame
SAS Protocol
SSP Link HW
SAS Protocol
CLOSE