Wilder Technologies SATA 2.5 Test Adapter Specifikace stáhnout pdf (Strana 15)

Agilent Technologies, Inc.

Agilent Technologies, Inc. 15 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4

Test PHY-03 - Spread-Spectrum Modulation Frequency

Purpose: To verify that the Spread Spectrum Modulation Frequency of the Products Under Test’s (PUT)

transmitter is within the conformance limits.

References:

[1] Serial ATA Revision 3.0, 7.2.1, Table 29 – General Specifications

[2] Ibid, 7.2.2.1.5 – Spread-Spectrum Modulation Frequency

[3] Ibid, 7.4.14 – SSC Profile

[4] SATA Interoperability Program Unified Test Document, 2.13.3 – Spread-Spectrum Modulation

Frequency

[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. This specification

includes conformance limits for the Spread-Spectrum Modulation Frequency. Reference [2] provides the definition

of this term for the purposes of SATA testing. Reference [3] defines the measurement requirements for this test.

In this test, the Spread-Spectrum Modulation Frequency, f

SSC

, is measured, based on at least 10 complete

SSC cycles.

This test is only run once at the maximum interace rate of the product (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 at the 50% threshold of the Unit Interval trend and

reported. The Mean is cumulative over all acquisitions and the final Mean SSC modulation frequency is

reported as the final value. Either “PASS” or “FAIL” is shown for the SSC frequency test in the report

generated at the completion of the testing.

Observable Results:

The Spread-Spectrum Modulation Frequency value shall be between 30 kHz and 33 kHz 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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Wilder Technologies SATA 2.5 Test Adapter Specifikace Strana 15