Teledyne LeCroy SAS Verification Test Descriptions User Manual

Page 38

The University of New Hampshire

InterOperability Laboratory

Serial Attached SCSI Consortium

SAS Link and Transport Layer Test Suite v0.13

Test 9.2.1 - SSP Command IU – TAG

Purpose: To determine that the DUT properly sets the TAG field.

References:

9.2.1 SAS Standard

Resource Requirements: SAS Protocol Analyzer and Generator. SAS Target with 2 LUNs within the same SSP
Target Port. If the DUT is an initiator, it will need to have software capable of generating SCSI traffic.

Revision History: February 8, 2005

Test Setup: The DUT and the Testing Station are physically connected. The DUT is not powered on.

Test Procedure (SSP Targets):

• Power on the DUT.

• 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. The Testing Station should transmit a

READ command to the DUT.

• Wait for the DUT to open an SSP connection to the Testing Station. Allow the DUT to transmit DATA

and SCSI Response to the Testing Station.

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

WRITE command to the DUT.

• Wait for the DUT to open an SSP connection to the Testing Station. Allow the DUT to transmit

XFER_RDY, then the Testing Station should transmit a SSP DATA frame. Allow the DUT to transmit
a SCSI Response to the Testing Station.

Observable Results: If the DUT is a target, verify that the TAG in the XFER_RDY, DATA and RESPONSE
frames matched the TAG of the COMMAND frames which they corresponded to.