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SN75LVPE801 Datasheet(PDF) 10 Page - Texas Instruments |
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SN75LVPE801 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 34 page GND[5] V [1] CC EQ [4] DE [8] RX+ [2] RX– [3] TX+ [7] TX– [6] LVPE801 RT Driver Equalizer OOB Detect CTRL RT V = 1.7 V TYP BB Copyright © 2016, Texas Instruments Incorporated 10 SN75LVPE801 SLLSEW8 – SEPTEMBER 2016 www.ti.com Product Folder Links: SN75LVPE801 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 9 Detailed Description 9.1 Overview The SN75LVPE801 is a single channel equalizer and redriver. The device operates over a wide range of signaling rates, supporting operation from DC to 8 Gbps. The wide operating range supports SATA Gen 1,2,3 (1.5 Gbps, 3.0 Gbps, and 6.0 Gbps respectively) as well as PCI Express 1.0, 2.0, 3.0 (2.5 Gbps, 5.0 Gbps, and 8.0 Gbps). The device also supports SATA Express (SATA 3.2) which is a form factor specification that allows for SATA and PCI Express signaling over a single connector. 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 SATA Express SATA Express (sometimes SATAe) is an electro-mechanical standard that supports both SATA and PCI Express storage devices. SATAe is standardized in the SATA 3.2 standard. The standard is concerned with providing a smooth transition from SATA to PCIe storage devices. The standard provides for standardized cables and connectors, and muxes the PCIe and SATA lanes at the host side so that either SATA compliant or PCIe compliant devices may operate with a host. SATAe provides support for SATA1, SATA2 and SATA3 devices (operating from 1.5 Gbps to 6.0 Gbps), as well as PCIe1, PCIe2 and PCIe3 devices (operating from 2.5 Gbps to 8.0 Gbps). The SN75LVPE801 provides for equalization and re-drive of a single channel input signal complying with any of the SATA or PCIe standards available with SATAe. The SATAe standard provides for a mechanism for a host to recognize and detect whether a SATA or PCIe device is plugged into the host. See the Typical SATA Applications section for the details of the SATA Express Interface Detect operation. 9.3.2 Receiver Termination The receiver has integrated terminations to an internal bias voltage. The receiver differential input impedance is nominally 100 Ω, with a ±15% variation. For PCI Express compatibility it is necessary to include 330 Ω pull-down resistors between the connector and the AC capacitors, refer to Figure 24 for more information. 9.3.3 Receiver Internal Bias The SN75LVPE801 receiver is internally biased to 1.7 V, providing support for AC coupled inputs. |
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