NXP Semiconductors PX1011BI-EL1/G,518

Overview

PX1011BI-EL1/G,518 from NXP Semiconductors is a single-lane, 2.5 Gbit/s PCI Express stand-alone PHY IC for industrial temperature operation (−40 °C to +85 °C), compliant with PCIe Base Specification Rev. 1.1. It implements full SerDes functionality with 8b/10b encoding, Clock and Data Recovery (CDR), elastic buffer, and receiver detection, interfacing via an 8-bit SSTL_2 PXPIPE at 250 MHz to FPGA-based MAC layers in embedded computing and industrial control systems.

For engineers reviewing the PX1011BI-EL1/G,518 datasheet, PX1011BI-EL1/G,518 pinout, PX1011BI-EL1/G,518 application, or PX1011BI-EL1/G,518 equivalent, key selection criteria include its LFBGA81 package compatibility with FPGA I/O, support for PCIe P0/P0s/P1 power states, 100 MHz ±300 ppm reference clock tolerance, JTAG boundary scan testability, and industrial-grade thermal reliability - all critical for high-integrity link-layer design in space-constrained edge devices.

Technical Context

The PX1011BI-EL1/G,518 implements a complete PCIe physical layer with integrated Serializer/De-serializer (SerDes), 8b/10b encoder/decoder, and elastic buffer for clock tolerance compensation up to ±600 ppm. Its PXPIPE interface adds source-synchronous TXCLK/RXCLK signals to Intel's PIPE v1.0 specification, enabling timing-closure simplicity in off-chip FPGA-to-PHY interconnects.

It supports full PCIe power management states (P0, P0s, P1) with dedicated PWRDWN[1:0] inputs and status reporting via PHYSTATUS and RXSTATUS outputs. Receiver detection and loopback are implemented as hardware-controlled functions triggered by RXDET_LOOPB, with real-time error signaling (8b/10b decode, disparity, elastic buffer overflow/underflow) encoded on three status pins.

Key Specifications

Pinout & Package

LFBGA81 package (9 mm × 9 mm × 1.05 mm, SOT643-1); Pb-free SnAgCu solder balls; 81-ball grid with defined ball mapping per NXP SOT643-1 mechanical drawing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe Gen 1 x1 PHY applications.

Compared with IDT8N3SV772 and TI TSB580, the PX1011BI-EL1/G,518 uniquely combines industrial temperature operation, integrated 50 Ω termination, JTAG BIST, and spread-spectrum clocking in a single LFBGA81 package - making it optimal for high-reliability, test-ready PCIe link implementations where FPGA compatibility and thermal robustness are mandatory.

Availability

PX1011BI-EL1/G,518 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-based PCIe endpoint bridges, embedded test equipment, ruggedized edge compute gateways, and PCIe diagnostic subsystems requiring stable component supply across extended lifecycle programs.

Supply support for PX1011BI-EL1/G,518 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, RF, and mixed-signal technologies.

The PX1011B product line delivers PCIe physical layer silicon optimized for FPGA-centric embedded systems requiring off-chip SerDes functionality, industrial reliability, and simplified timing integration - targeting industrial automation, test instrumentation, and edge infrastructure markets.

FAQ

What is the operating temperature range of the PX1011BI-EL1/G,518?

The PX1011BI-EL1/G,518 is rated for industrial temperature operation from −40 °C to +85 °C, as confirmed by NXP's ordering information and quick reference data tables. This range is explicitly designated by the "I" suffix in the part number and validated through thermal characterization per JEDEC JESD22-A104. The PX1011BI-EL1/G,518 maintains full PCIe Gen 1 compliance and timing specifications across this entire range without derating.

Does the PX1011BI-EL1/G,518 integrate on-chip termination for its PCIe differential I/Os?

Yes, the PX1011BI-EL1/G,518 integrates 50 Ω on-chip termination for both RX_P/RX_N and TX_P/TX_N differential pairs, as specified in Tables 5 and 6 of the datasheet. This eliminates the need for external 50 Ω resistors on the PCB, reducing component count and improving signal integrity consistency. The termination is active during normal operation and remains functional across the full industrial temperature range.

How does the PX1011BI-EL1/G,518 handle clock tolerance between link partners?

The PX1011BI-EL1/G,518 uses an elastic buffer capable of holding at least seven symbols to compensate for ±600 ppm frequency differences between link partners, as described in Section 8.9. It dynamically inserts or removes SKP ordered sets in the received data stream and signals these actions to the MAC via RXSTATUS[2:0], ensuring reliable data alignment without buffer overflow or underflow - a requirement for PCIe Gen 1 interoperability.

What power management states does the PX1011BI-EL1/G,518 support?

The PX1011BI-EL1/G,518 supports PCIe-defined P0 (normal operation), P0s (transmit idle), and P1 (full link idle) power states, controlled via PWRDWN[1:0] inputs. It meets all timing constraints for clock recovery and link training across these states, with PHYSTATUS pulsing to confirm state transitions. Power dissipation is <300 mW in P0 and scales down in lower states, as verified in Section 2.4 and Table 13.

Is the PX1011BI-EL1/G,518 compatible with standard FPGA I/O interfaces?

Yes, the PX1011BI-EL1/G,518 uses 2.5 V SSTL_2 Class I signaling on its 8-bit PXPIPE interface, which is directly compatible with common FPGA I/O banks (e.g., Xilinx 7-series, Intel Cyclone V/Arria 10). No level shifters or external termination resistors are required, as confirmed in Sections 2.2 and 8. Functional Description. The source-synchronous TXCLK/RXCLK further simplifies timing closure versus asynchronous interfaces.