Agilent Technologies, Inc.
Agilent Technologies, Inc. 14 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4
Test PHY-02 – Frequency Long Term Accuracy
Purpose: To verify that the long term frequency stability of the Products Under Test’s (PUT’s) transmitter is within
the conformance limit.
References:
[1] Serial ATA Revision 3.0, 7.2.1, Table 29 – General Specifications
[2] Ibid, 7.2.2.1.4 – TX Frequency Long Term Stability
[3] Ibid, 7.4.7 – Long Term Frequency Accuracy
[4] SATA Interoperability Program Unified Test Document, 2.12.2 – Frequency Long-Term Stability
[5] Pre-Test MOI
Resource Requirements:
Same requirements as for PHY-01
Last Template Modification: March 25, 2009 (Version 1.02)
Discussion:
Reference [1] specifies the general PHY conformance limits for SATA products. Reference [2] provides
the definition of this term for the purposes of SATA testing. Reference [3] defines the measurement
requirements for this test. This test is not performed for products employing SSC since SSC modulation
deviation and frequency long-term accuracy cannot be separated in measurement. For products employing
SSC, PHY-04 will measure the total UI deviation.
This test is only run once at the maximum interface rate of the products (1.5Gb/s, 3.0Gb/s or 6.0Gb/s)
Test Setup:
Same setup as for PHY-01.
Test Procedure:
This parameter is covered by Agilent Technologies, Inc. N5411B automated SATA compliance software,
revision 1.02 or later. The Mean frequency is measured and reported for non SSC productss. Either “PASS”
or “FAIL” is shown for the SSC frequency test in the report generated at the completion of the testing.
Mean Test: (Measured Mean – Nominal)/Nominal)* 1E6 < +/-350 ppm for pass
where Nominal is defined as 1.5E9 for Gen 1 products ,3E9 for Gen 2 products and 6E9 for Gen 3
products.
Observable Results:
The value of the Mean Test at the maximum interface rate is considered for the non-SSC enabled products.
The Frequency Long Term Accuracy value shall be between +/-350ppm. products.
Possible Problems:
Some products may not support disconnect during the process of enabling BIST and testing. For these
products, refer to the Disconnect sections of reference [5] for setup requirement.
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