Wilder Technologies SATA 2.5 Test Adapter Dokumentacja Pobierz pdf (Strona 21)

Agilent Technologies, Inc.

Agilent Technologies, Inc. 21 SATA PHY, TSG & OOB Test MOI v.1.1 Revision 1.4

Test TSG-02 - Rise/Fall Time

Purpose: To verify that the Rise/Fall time of the Products Under Test’s (PUT’s) is within the conformance limits.

References:

[1] Serial ATA Revision 3.0, 7.2.1, Table 31 – Transmitted Signal Requirements

[2] Ibid, 7.2.2.2.9 – TX Rise/Fall Time

[3] Ibid, 7.4.4 – Rise and Fall Times

[4] SATA Interoperability Program Unified Test Document, 2.15.2 – Rise/Fall Time

[5] Pre-Test MOI

Resource Requirements:

Same as for TSG-01.

See appendix A for details.

Last Template Modification: March 25, 2009 (Version 1.02)

Discussion:

Reference [1] specifies the Transmitted Signal conformance limits for SATA products. This specification

includes conformance limits for the Rise/Fall Time. Reference [2] provides the definition of this term for the

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

TSG-02 is tested using LFTP. For products which support 3Gb/s or 6Gb/s, this requirement must be tested

at both 1.5Gb/s and 3.0Gb/s interface rates.

The cables connecting the 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 to the scope must be deskewed, as discussed in Appendix A. Skew

lengthens the measured differential rise and fall times.

Test Setup:

1. The N5411B SATA compliance software will prompt for LFTP when it needs that pattern. When

prompted, follow the procedures in reference [5] to enable BIST-TAS LFTP. Or keep products in BIST-L.

2. 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 LFTP, 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.

Test Procedure:

This parameter is covered by Agilent Technologies, Inc. N5411B automated SATA compliance software,

revision 1.02 or later. The Mean value is reported as the final value and compared only to the RFT Max

value in the table below for pass/fail. Either “PASS” or “FAIL” is shown for the Rise/Fall time test in the

report generated at the completion of the testing.

Observable Results:

The Mean TX Rise/Fall Times shall be between the limits specified in reference [1]. For convenience, the

values are reproduced below. Note: Failures of minimum rise and fall time limits have not been shown to

affect interoperability and will not be included in determining pass/fail for Interoperability testing.

Limit

Time @ 1.5Gb/s (ps (UI))

Time @ 3Gb/s (ps (UI))

Time @ 6Gb/s (ps (UI))

Min 20

80%

100 (0.15)

67 (0.20)

33 (0.20)

Max 20

80%

273 (0.41)

136 (0.41)

68 (0.41)

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 86 87

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