Teledyne LeCroy SAS Verification Test Descriptions User Manual

Page 27

The University of New Hampshire

InterOperability Laboratory

Serial Attached SCSI Consortium

SAS Link and Transport Layer Test Suite v0.13

Test 7.4.3 - Closing SSP Connections – DONE (CREDIT TIMEOUT)

Purpose: To determine that the DUT properly responds when RRDY has not been received for an impending
transaction.

References:

7.16.6 SAS Standard

Resource Requirements: SAS Protocol Analyzer and Generator

Revision History: September 13, 2004

Test Setup: The DUT and the Testing Station are physically connected.

Test Procedure (Targets):

• The Testing Station should start and complete a Phy Reset sequence followed by an Identify sequence

with the DUT. Since the DUT is a target the Testing Station should transmit an Identify Address frame
indicating that it is an initiator.

• The Testing Station should open an SSP connection to the DUT.

• Wait for the DUT to transmit OPEN_ACCEPT and RRDY. The Testing Station should transmit a

SCSI INQUIRY command to the DUT, then close the connection.

• Wait for the DUT to open an SSP connection to the Testing Station. The Testing Station should not

transmit RRDY to grant credit for the DUT to transmit a SCSI Response to the Testing Station.

Observable Results: Verify that the DUT transmitted DONE (CREDIT TIMEOUT) within 1 msec of opening the
SSP connection.