Specifications

SATA-IO Confidential 23
• Verify that once device is powered off, that host sends COMRESET repeatably and no faster than every
10ms (use trace to verify behavior and timings). Since a single result is reported, the worst-case result out of
all 10 cases must be reported (i.e. smallest value).
Pass/Fail Criteria
• NOTE : the time to be compared to this requirement is from the start of the first COMRESET burst (detectable
point) to the start of a subsequent COMRESET burst from the host. Some subtraction or modification to a
result displayed by a bus analyzer may be necessary to extract the appropriate value for comparison.
2.4. Software Settings Preservation
The Serial ATA software settings preservation (SSP) test requirements are determined by the requirements of the
feature as defined in Serial ATA Revision 2.6.
All of the test requirements listed in this section require that support for Software Settings Preservation is claimed by
the product for verification of the Expected Behavior. Support for Software Settings Preservation can be verified by
reading Word 78 bit 6 set to one in IDENTIFY DEVICE or IDENTIFY PACKET DEVICE data.
See section 13.4 of Serial ATA Revision 2.6 for details on Software Settings Preservation.
2.4.1. SSP-01 : Initialize Device Parameters
2.4.1.1. Device Expected Behavior
This test is not applicable to ATAPI devices.
NOTE - To test the following requirement, a device must claim that the value contained in Words 58:54 are valid
(Word 53 bit 0 set to one in IDENTIFY DEVICE data).
Upon receipt of a COMRESET, a device shall maintain the device settings established by the INITIALIZE DEVICE
PARAMETERS command. Specifically, the values contained within Words 58:54 in IDENTIFY DEVICE data shall be
maintained after a COMRESET. The value contained within Word 53 bit 0 in IDENTIFY DEVICE data shall also be
maintained after a COMRESET.
• Check Word 78 bit 6 in IDENTIFY DEVICE (set to one)
Measurement Requirements
• Check Word 53 bit 0 (set to one)
• If the above is false, then the test is not applicable
• Otherwise, run the following test
o Check value of device settings (Words 58:54)
o Issue COMRESET and complete OOB sequence
o Check value of device settings (Words 58:54)
• Verify that IDENTIFY DEVICE Words 58:54 contain the same values following COMRESET
Pass/Fail Criteria
2.4.2. SSP-02 : Read/Write Stream Error Log
2.4.2.1. Device Expected Behavior
This test is not applicable to ATAPI devices.
NOTE - To test the following requirement, a device must claim support for Streaming (Word 84 bit 4 set to one in
IDENTIFY DEVICE data).
Upon receipt of a COMRESET, a device shall maintain the Read Stream Error Log and Write Stream Error Log
contents. Specifically, the values contained within log addresses 22:21 shall be maintained after a COMRESET.