Teledyne LeCroy SAS Verification Test Descriptions - Manual (Page 46)

The University of New Hampshire
InterOperability Laboratory
Serial Attached SCSI Consortium
45 SAS Link and Transport Layer Test Suite v0.13
Test 9.4.4 - SSP XFER_RDY IU – WRITE DATA LENGTH
Purpose: To determine that the DUT, an SSP Target port, properly sets the DATA OFFSET field when transmitting
DATA frames.
References:
9.2.2.3 SAS Standard
Resource Requirements: SAS Protocol Analyzer and Generator.
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 Target):
• 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 a SAS Initiator.
• The Testing Station should open an SSP connection to the DUT and transmit a SCSI MODE SENSE
command for the Disconnect-Reconnect Mode Page. Close the connection
• Allow the DUT to open an SSP connection to the Testing Station and transmit DATA frame with the
Mode Page Block Descriptor and a SCSI response frame to the received MODE SENSE command.
• The Testing Station should open an SSP connection to the DUT and transmit a SCSI
WRITE_BUFFER command for 2051 bytes. Close the connection
• Allow the DUT to open an SSP connection to the Testing Station and transmit XFER_RDY, DATA,
SCSI response frame to the received command.
Observable Results: Verify that if the DUT sets the WRITE DATA LENGTH field not a value that is not divisible
by four, that this is the last XFER_RDY frame for a command.