Agilent Technologies, Inc.
Agilent Technologies, Inc. 12 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4
Test PHY-01 - Unit Interval
Purpose: To verify that the Unit Interval of the Product Under Test (PUT) TX signaling is within the conformance
limits.
References:
[1] Serial ATA Revision 3.0, 7.2.1, Table 29 – General Specifications
[2] Ibid, 7.2.2.1.3 – Unit Interval
[3] Ibid, 7.4.14 – SSC Profile
[4] SATA Interoperability Program Unified Test Document, 2.13.1 – Unit Interval
[5] Pre-Test MOI
Resource Requirements:
• Agilent DSAX93204A, DSAX92804A, DSAX92504A, DSAX92004A and DSAX91604A (32GHz,
28GHz, 25GHz, 20GHz and 16GHz bandwidth, 80GS/s per channel) or Agilent DSA91204A (12GHz
bandwidth, 40GS/s per channel)
• Agilent N5411B SATA Electrical Performance Validation and Compliance Test Software
• Wilder Technologies SATA Gen3 Receptacle Adapter SATA-TPA-R or ICT-Lanto SATA Receptacle
Gen 3 TF-1R31 or Crescent Heart Software TF-SATA-NE/ZP or TF-eSATA-NE/ZP test adapter or
equivalent
• Gen3i capable products PC running ULink, SerialTek BusMod BusGen BIST Generator or any other
mechanism that makes the products produce the required patterns is acceptable.
See appendix A for details.
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 mean Unit Interval (UI). 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 mean UI value is measured based on the average of at least 100,000 observed UI’s,
measured at the transmitter output.
The mean UI is measured from a Unit Interval measurement trend, after a low-pass filter with 1.98MHz -3dB
bandwidth, and applies to signaling with SSC enabled and/or disabled. This value includes the frequency long-term
stability deviation and the Spread Spectrum Clock FM frequency deviation.
Test Setup:
1. (For Hosts only) select the worst case port as described in reference [5]. All further connections to the
products would be to the worst case port.
2. The N5411B automated test software will prompt you to make the products produce HFTP. Once
prompted, follow the procedures in the respective sections in reference [5] to either activate BIST-TAS
HFTP pattern or BIST-L if BIST-L is supported by the products.
3. Plug the test fixture into the products. The test fixture is connected to channels 1 and 3 of the scope by
two 36” SMA cables (Rosenberger or equivalent). OBSERVE the signal on the scope. If it is HFTP, press
OK in the N5411B prompt. If not, the products did not properly handle BIST Activate FIS; a non-standard
way to make it produce the desired pattern will be required.
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