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SATA&SAS ReDriver Application Guide FAE Training Lingsan Quan Application Manager

SATA&SAS ReDriver Application Guide FAE Training Lingsan Quan Application Manager lquan@pericom.com Aug, 11 2011. For Internal Use only. Why ReDriver is Required. Signal degradation Long Cable or Long PCB Trace Connector VIA. Connector. Connector. VIA. For Internal use only.

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SATA&SAS ReDriver Application Guide FAE Training Lingsan Quan Application Manager

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  1. SATA&SAS ReDriver Application Guide FAE Training Lingsan Quan Application Manager lquan@pericom.com Aug, 11 2011 For Internal Use only

  2. Why ReDriver is Required • Signal degradation • Long Cable or Long PCB Trace • Connector • VIA Connector Connector VIA For Internal use only

  3. Application Sample1_ReDriver on NB Docking For Internal use only

  4. Application Sample2_ReDriver on Mid-plane Brd 2pcs PI2EQX6804-A in series on one Mid-plane Board: U1&U8 Trace length: about 16inch between U1 and U8 U8 U1 Trace length: 7~9inch between U8 and Intel Chipset Trace length: 2~5inch between U1 and HDD Intel Romley Platform 12 HDDs connected to Backplane Total 4pcs mid-plane boards with 4pcs MB in one system For Internal use only

  5. What ReDriver can not help to do • Reflection • PCB Stub issue By-pass resistor Stub issue on Layout Connector Connector VIA For Internal use only

  6. How to Add by-pass Circuit for ReDriver • By-Pass Layout Not Good Better for co-layout to decrease the Stub For Internal use only

  7. Layout Guide1 • Layout Considerations for Differential Pairs • The trace length miss-matching shall be less than 5 mils for the “+” and “–“ traces in the same pairs • Use wider trace width, with 100ohm differential impedance, to minimize the loss for long routes • Target differential Zo of 100ohm ±20% • More pair-to-pair spacing for minimal crosstalk coupling, it is recommended to have >3X gap spacing between differential pairs. • It is preferable to route differential lines exclusively on one layer of the board, particularly for the input traces • The use of vias should be avoided if possible, if vias must be used, they should be used sparingly and must be placed symmetrically for each side of a given differential pair. • Route the differential signals away from other signals and noise sources on the printed circuit board For Internal use only

  8. Layout Guide2 • PCB layout trace routing For Internal use only

  9. How to Apply Redriver’s Equalization, Swing and Emphasis Non Transition Eye Transition Eye For Internal use only

  10. Pericom SATA/SAS Redriver Products_1 • One-Lane ReDriver: PI3EQX6701C/D/E, same PINOUT • They have main difference as below, and have the same Swing and Emphasis control. They can work at 1.2V or 2.5V~3.3V power. For Internal use only

  11. Pericom SATA/SAS Redriver Products_2 • One-Lane ReDriver: PI3EQX6741ST/STB, PI2EQX6741SL • PI3EQX6741ST and PI2EQX6741SLhave the difference at power consumption, but they have same pinout, PI3EQX6741STB. Is compatible with TI-SN75LVCP412-A. For Internal use only

  12. Pericom SATA/SAS Redriver Products_3 • Four-Lane ReDriver: PI2EQX6804-A, PI2EQX6864-A • PI2EQX6804-A and PI2EQX6864-Ahave the difference at setting control, and they also have different Pinout. For Internal use only

  13. Pericom SATA/SAS Redriver Products_4 • In the Next, we’ll have… • One-Lane ReDriver: • PI2EQX6811, with pin strap and I2C control • Two-Lane ReDriver: • PI2EQX6812, with I2C control • Four-Lane ReDriver: • PI2EQX6874, with I2C control for EACH channel • PI2EQX6814, with I2C control for EACH channel For Internal use only

  14. Application Feature in PI3EQX6741Sx Parts PI3EQX6741Sx • Termination Detect Feature_1 Waveform in the right is measured at single output of PI3EQX6741Sx before AC capacitors. It means there is no termination at Host or Device side. Note: 1, PI3EQX6741Sx has termination detect feature to decrease power consumption when external HDD is unplugged, . When external HDD is unplugged, the “HDD unplugged” current is only about 1.1mA. And when external HDD is plugged in, PI3EQX6741Sx can auto-wakeup for normal working. For Internal use only

  15. Application Feature in PI3EQX6741Sx Parts • Termination Detect Feature_2 When HDD is plugged Waveform in the right is measured at differential output of PI3EQX6741Sx and Tdet_A# output. It means there is termination at Host or Device side (HDD or Host is plugged) SATA Signal Output Tdet_A# Output For Internal use only

  16. I2C sequence in PI2EQX68x4-A Parts • I2C Write Sequence There is ONE dummy byte to be added Waveform in the right is measured at differential output of PI3EQX6741Sx and Tdet_A# output. It means there is termination at Host or Device side (HDD or Host is plugged) C0 This is one sample for Write sequence at Address=C0 (A4, A1, A0 are pulled down) and Data byte[0..11]=00,00,F0,00,00,FF,FF,FF,00,00,00,EF. For Internal use only

  17. I2C sequence in PI2EQX68x4-A Parts • I2C Read Sequence There is NO dummy byte. C1 This is one sample for Read sequence at Address=C1 (A4, A1, A0 are pulled down) and Data byte[0..11]=08,00,F0,00,00,FF,FF,FF,00,00,00,EF. Note: Byte0=08 means Channel-A2 has signal input. For Internal use only

  18. Interop_UnifiedTest Update_1 • OOB Signaling Host COMWAKE Host COMRESET 1st OOB Burst Device COMRESET Device COMWAKE For Internal use only

  19. Interop_UnifiedTest Update_2 • OOB Signal Burst Requirement PASS Criteria Fail Criteria PASS/FAIL criteria information in SATA Compliance Test Spec-UTD1.4.01. For Internal use only

  20. Interop_UnifiedTest Update_3 • 1st OOB Burst Signal Pericom Part Competitor ReDriver Input ReDriver Output Note: 1, Competitor has 1st OOB Burst distortion issue, it just has 64.7nS length. According to SATA compliance test spec (UTD 1.4.01), the OOB burst length shall be at the range of 103.5~110.9nS. So it will be fail in Compliance test 2, PI3EQX6741Sx has BETTER 1st OOB burst length which is 103.6nS. For Internal use only

  21. Interop_UnifiedTest Update_4 • Differential Output Voltage for SATA G1&G2 It will be no problem in SATA compliance test For Internal use only

  22. Interop_UnifiedTest Update_5 • Differential Output Voltage for SATA G3 Fail PASS For Internal use only

  23. Q&AThanks For Internal use only

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