Teledyne LeCroy SAS Sample Test Suite - Manual (Page 61)

SAS Sample Test Suite
Connection Errors (Test Group D) 61
Receive CREDIT_BLOCKED primitive (TestD.4)
The Target device shall send any outstanding frames for which it has credits, then send DONE.
After the connection is closed, if the Target device has more frames to send, it shall open a new
connection and attempt to send them.
Test Procedure:
1. The Testing Station is instructed to start and complete a phy Reset sequence followed by an
Identify sequence with the DUT. Since the DUT is a target, the Testing Station is instructed
to transmit an Identify Address frame indicating that it is a SAS Initiator.
2. The Testing Station is instructed to open an SSP connection to the DUT and transmit a SCSI
READ_BUFFER command for 2 512 byte frames. Close the connection
3. Allow the DUT to open an SSP connection to the Testing Station and transmit the first DATA
frame with a RRDY from the Testing Station.
4. The Testing Station is instructed to transmit an ACK for the DATA frame. Then the Testing
Station will transmit a CREDIT_BLOCK primitive for this connection.
Observable Results: Verify that the DUT does not send the next DATA frame. And, the DUT sends a
DONE before closing the connection. The DUT should then transmit an OPEN to establish a new
connection for the remaining DATA frame.