Teledyne LeCroy SAS Sample Test Suite - Manual (Page 62)

SAS Sample Test Suite
Connection Errors (Test Group D) 62
Figure 24 - Receive CREDIT_BLOCKED primitive
ACK
SSP Link HW
Target has Data Frame to transmit
but no RRDY credits left
DONE Normal
CLOSE
Connection re-establish
Initiator/Test Station Target Primitive Logic Target Protocol Logic
CREDIT BLOCK
Data Frame
SAS Protocol
SSP Link HW
SAS Protocol
CLOSE
OPEN ACCEPT
OPEN Request