Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Interface > Specialized

NXP Semiconductors PX1012A-EL1/G,557

Name: PX1012A-EL1/G,557
Brand: NXP Semiconductors
SKU: PX1012A-EL1/G,557
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PX1012A-EL1/G,557

Manufacturer:: NXP Semiconductors

Category:: Specialized

Package:: 81-LFBGA

Datasheet:: PX1012A-EL1/G,557.pdf

Description:: IC INTFACE SPECIALIZED 81LFBGA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,627

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

PX1012A-EL1/G from NXP Semiconductors (formerly Philips Semiconductors) is a single-lane, 2.5 Gbit/s PCI Express 1.1-compliant stand-alone physical layer (PHY) IC. It implements full SerDes functionality with 8b/10b encoding/decoding, clock and data recovery (CDR), elastic buffer, receiver detection, and loopback-operating at 250 MHz via an 8-bit SSTL_2 PXPIPE interface. It serves as the high-speed serial interface bridge between FPGA-based MACs and PCIe links in embedded computing and industrial control systems.

For engineers reviewing the PX1012A-EL1/G datasheet, PX1012A-EL1/G pinout, PX1012A-EL1/G application, or PX1012A-EL1/G equivalent, key selection considerations include its LFBGA81 package, industrial temperature range (−40 °C to +85 °C), dual 250 MHz source-synchronous clocks (TXCLK/RXCLK), 100 MHz ±300 ppm reference clock support, and compliance with PCI Express Base Specification Rev. 1.1.

Technical Context

The PX1012A-EL1/G implements a full PCI Express 1.1 PHY stack including Physical Coding Sub-layer (PCS), Serializer/Deserializer (SerDes), and analog I/O pads with on-chip 50 Ω termination for differential RX_P/RX_N and TX_P/TX_N. Its CDR circuit recovers 2.5 Gbit/s serial data and retimes it into parallel 8-bit words synchronized to RXCLK.

It uses a superset of the Intel PIPE v1.0 interface-enhanced as PXPIPE-with dedicated source-synchronous TXCLK and RXCLK signals, SSTL_2 Class I signaling (2.5 V), and explicit control/status lines (RXDET_LOOPB, TXIDLE, RXPOL, PHYSTATUS) for link training, power management (P0/P0s/P1), and polarity inversion-enabling direct integration with FPGA MAC logic without external timing compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Data rate	2.5 Gbit/s serial line rate; supports PCIe x1 Gen1 link operation with full LTSSM compatibility.
Interface standard	PCI Express Base Specification Rev. 1.1 compliant; not compatible with PCIe 2.0 or later.
PXPIPE width & speed	8-bit parallel interface operating at 250 MHz with source-synchronous TXCLK/RXCLK; enables timing closure in FPGA designs.
Supply voltages	VDD = 1.2 V (high-speed I/O), VDDD2 = 2.5 V (SSTL_2 I/O), VDDD3 = 1.25 V (core), VDDA1 = 1.25 V / VDDA2 = 3.3 V (analog SerDes).
Reference clock	100 MHz ±300 ppm differential REFCLK_P/REFCLK_N; supports spread spectrum (30–33 kHz) for EMI reduction.
Operating temperature	−40 °C to +85 °C (industrial grade); validated for continuous operation across full range.
ESD protection	2000 V HBM; sufficient for board-level handling in industrial assembly environments.

Pinout & Package

LFBGA81 package (9 × 9 × 1.05 mm, SOT643-1), lead-free (SnAgCu solder balls), with 81-ball grid array and exposed thermal pad (not electrically connected). Pin mapping follows standard top-view ball layout with A1 index corner.

Pin/Terminal	Circuit Role	Design Meaning
RX_P / RX_N	Differential receive input	50 Ω on-chip termination; accepts 2.5 Gbit/s PCIe serial stream; requires AC-coupled 100 Ω differential PCB trace.
TX_P / TX_N	Differential transmit output	50 Ω on-chip termination; drives 2.5 Gbit/s PCIe serial stream; supports de-emphasis for improved eye opening.
TXDATA[7:0] / TXDATAK	Parallel transmit input	8-bit + K-character input from MAC at 250 MHz; SSTL_2 signaling; no internal termination-requires external 25 Ω series resistors per line.
RXDATA[7:0] / RXDATAK	Parallel receive output	8-bit + K-character output to MAC synchronized to RXCLK; indicates valid symbol lock via RXVALID.
TXCLK / RXCLK	Source-synchronous clocks	TXCLK (input) clocks MAC-to-PHY writes; RXCLK (output) clocks PHY-to-MAC reads; both 250 MHz, edge-aligned to data center.
REFCLK_P / REFCLK_N	Differential reference input	100 MHz clock source for PLL; 50 Ω on-chip termination; must meet ±300 ppm tolerance and jitter specs per PCIe 1.1.
RESET_N	Asynchronous reset	Active-low; must be held low ≥64 µs after VDD/VDDD stability; releases PHYSTATUS upon internal clock lock.
RXDET_LOOPB	Mode control	Asserted LOW to initiate receiver detection or loopback; controls PHY state transitions independent of LTSSM.

Key Features

Feature	Design Value
PCIe 1.1 compliance	Fully implements all mandatory PHY layer functions per Rev. 1.1-including LTSSM entry/exit, electrical idle, SKP ordered-set handling, and disparity control.
Source-synchronous PXPIPE	Eliminates need for external DDR timing constraints; TXCLK and RXCLK simplify FPGA interface design and reduce PCB routing complexity.
Elastic buffer with SKP management	Compensates for ±600 ppm clock tolerance between link partners by inserting/removing SKP symbols; reports actions via RXSTATUS for MAC coordination.
Industrial-grade power management	Supports P0 (active), P0s (transmit idle), and P1 (full link idle) states with <300 mW typical L0 power; PHYSTATUS pulses confirm state transitions.
Robust error reporting	Three-bit RXSTATUS encodes eight distinct conditions-including 8b/10b decode errors, elastic buffer overflow/underflow, and disparity errors-with cycle-accurate assertion timing.

Applications

PCIe Bridge for Industrial FPGA Systems	Embedded Control Link Interface
Use Scenario: FPGA-based motion controller connects to PCIe endpoint (e.g., I/O expansion card) via point-to-point x1 link in factory automation cabinet. IC Role / Device Role / Timing Role: PX1012A-EL1/G acts as standalone PHY, offloading SerDes, CDR, and 8b/10b from FPGA fabric while providing deterministic 250 MHz source-synchronous timing to MAC logic. Use Value: Enables use of cost-optimized FPGA without integrated PCIe hard IP; supports industrial temperature range and robust ESD for harsh environments.	Use Scenario: Medical imaging subsystem uses PCIe to connect custom ASIC (MAC) to host CPU over backplane with strict EMI limits. IC Role / Device Role / Timing Role: PX1012A-EL1/G provides spread-spectrum clocking, on-chip termination, and low-jitter CDR to meet PCIe 1.1 electrical compliance without external components. Use Value: Reduces BOM count and layout area vs. discrete SerDes solutions; SSTL_2 interface ensures compatibility with medical-grade FPGA I/O banks.
Legacy System PCIe Upgrade Path	Test Equipment High-Speed Interconnect
Use Scenario: Retrofit of legacy industrial PC with PCIe-capable add-in card using existing parallel bus architecture. IC Role / Device Role / Timing Role: PX1012A-EL1/G bridges legacy parallel interface (via custom MAC) to PCIe x1 slot, handling serialization, clock recovery, and link training autonomously. Use Value: Extends life of legacy hardware without redesigning core logic; supports P1 power state for low-power standby during idle periods.	Use Scenario: Automated test equipment (ATE) uses PCIe for high-throughput data streaming between digitizer module and host controller. IC Role / Device Role / Timing Role: PX1012A-EL1/G serves as deterministic, low-latency PHY layer-enabling precise timestamping via RXCLK-synchronized status signals (RXVALID, PHYSTATUS). Use Value: Elastic buffer and SKP management ensure uninterrupted data flow despite clock drift between modules; loopback mode supports in-system diagnostics.

PCIe Bridge for Industrial FPGA Systems

Embedded Control Link Interface

Use Scenario: FPGA-based motion controller connects to PCIe endpoint (e.g., I/O expansion card) via point-to-point x1 link in factory automation cabinet.

IC Role / Device Role / Timing Role: PX1012A-EL1/G acts as standalone PHY, offloading SerDes, CDR, and 8b/10b from FPGA fabric while providing deterministic 250 MHz source-synchronous timing to MAC logic.

Use Value: Enables use of cost-optimized FPGA without integrated PCIe hard IP; supports industrial temperature range and robust ESD for harsh environments.

Use Scenario: Medical imaging subsystem uses PCIe to connect custom ASIC (MAC) to host CPU over backplane with strict EMI limits.

IC Role / Device Role / Timing Role: PX1012A-EL1/G provides spread-spectrum clocking, on-chip termination, and low-jitter CDR to meet PCIe 1.1 electrical compliance without external components.

Use Value: Reduces BOM count and layout area vs. discrete SerDes solutions; SSTL_2 interface ensures compatibility with medical-grade FPGA I/O banks.

Legacy System PCIe Upgrade Path

Test Equipment High-Speed Interconnect

Use Scenario: Retrofit of legacy industrial PC with PCIe-capable add-in card using existing parallel bus architecture.

IC Role / Device Role / Timing Role: PX1012A-EL1/G bridges legacy parallel interface (via custom MAC) to PCIe x1 slot, handling serialization, clock recovery, and link training autonomously.

Use Value: Extends life of legacy hardware without redesigning core logic; supports P1 power state for low-power standby during idle periods.

Use Scenario: Automated test equipment (ATE) uses PCIe for high-throughput data streaming between digitizer module and host controller.

IC Role / Device Role / Timing Role: PX1012A-EL1/G serves as deterministic, low-latency PHY layer-enabling precise timestamping via RXCLK-synchronized status signals (RXVALID, PHYSTATUS).

Use Value: Elastic buffer and SKP management ensure uninterrupted data flow despite clock drift between modules; loopback mode supports in-system diagnostics.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe 1.1 PHY applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IDT8N34S2108BGI	PCIe 1.1-compliant quad-lane PHY; integrates PLL, supports 100 MHz REFCLK but lacks PXPIPE source-synchronous clocks.	Designed for multi-lane server backplanes; requires external FIFOs and clock domain crossing logic for FPGA interfacing.	Select only when scaling beyond x1 or requiring integrated clock generation; PX1012A-EL1/G offers simpler FPGA timing integration.
TI TSB510A	PCIe 1.0a PHY with identical PXPIPE interface and LFBGA81 package; lower max ambient temperature (0 °C to +70 °C) and no industrial-grade qualification.	Targeted at commercial desktop peripherals; lacks −40 °C to +85 °C validation and HBM2000V ESD rating.	Acceptable for non-industrial applications where cost is critical; PX1012A-EL1/G required for extended temperature and reliability assurance.

Compared with IDT8N34S2108BGI and TSB510A, the PX1012A-EL1/G uniquely combines industrial temperature operation, source-synchronous PXPIPE timing, and full PCIe 1.1 LTSSM support in a single x1 lane-reducing FPGA resource usage and simplifying timing closure for embedded designers.

Availability

PX1012A-EL1/G is available at Aetrix Electronics and suitable for industrial control systems, medical imaging subsystems, and FPGA-based PCIe bridge applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PX1012A-EL1/G 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 company formed from the spin-off of Philips Semiconductors in 2006, specializing in secure connectivity, automotive, industrial, and IoT solutions.

The PX1012A-EL1/G belongs to NXP's legacy high-speed interface product line, designed specifically to enable FPGA-based PCIe adoption in industrial and embedded systems where hard IP was unavailable or cost-prohibitive.

FAQ

What is the maximum operating temperature for the PX1012A-EL1/G?

The PX1012A-EL1/G is rated for industrial temperature operation from −40 °C to +85 °C ambient. This specification is validated per the manufacturer's datasheet and applies to continuous operation under full electrical load with proper PCB thermal design. The PX1012A-EL1/G achieves this range through process and packaging optimizations distinct from commercial variants like PX1011A-EL1/G.

Does the PX1012A-EL1/G integrate on-chip termination for its PCIe differential I/Os?

Yes, the PX1012A-EL1/G includes 50 Ω on-chip termination for both RX_P/RX_N and TX_P/TX_N differential pairs. This eliminates the need for external 100 Ω Thevenin or AC-coupling termination networks, simplifying PCB layout and reducing component count. However, external 25 Ω series resistors are still required on all SSTL_2 PXPIPE data lines per the datasheet recommendations.

Can the PX1012A-EL1/G operate with a non-spread-spectrum reference clock?

Yes, the PX1012A-EL1/G fully supports a fixed-frequency 100 MHz ±300 ppm reference clock on REFCLK_P/REFCLK_N. Spread spectrum is optional and used solely for EMI reduction; disabling it has no impact on PCIe link training, CDR performance, or compliance. The PLL bandwidth is designed to accommodate both modes without reconfiguration.

How does the PX1012A-EL1/G handle clock tolerance between link partners?

The PX1012A-EL1/G uses an elastic buffer capable of holding ≥7 symbols to absorb frequency differences up to ±600 ppm. When SKP ordered-sets are detected, the PHY inserts or removes individual SKP symbols and signals the action via RXSTATUS bits-allowing the MAC to maintain data integrity without requiring precise clock synchronization between endpoints. This mechanism is fully compliant with PCIe 1.1 Base Specification Section 4.2.6.

Is the PX1012A-EL1/G pin-compatible with the PX1011A-EL1/G?

Yes, the PX1012A-EL1/G is pin-compatible with the PX1011A-EL1/G and all other variants in the PX1011A/PX1012A family (including PX1011AI-EL1/G and PX1012AI-EL1/G). They share identical LFBGA81 pinout, power sequencing, and interface signaling-differing only in temperature grade and minor internal calibration. This allows drop-in replacement in existing designs targeting industrial environments.

PX1012A-EL1/G,557 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: 81-LFBGA

Packaging:: Tray

Product Status:: Obsolete

Applications:: PCI Express MAX to PCI Express PHY

Interface:: IEEE 1149.1

Voltage - Supply:: 1.2V

Supplier Device Package:: 81-LFBGA (9x9)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

PX1012A-EL1/G,557 FAQ

1.How can I place an order for PX1012A-EL1/G,557 through Aetrix?

Please submit a Request for Quotation (RFQ) for PX1012A-EL1/G,557 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PX1012A-EL1/G,557 reliable?

The price and inventory of PX1012A-EL1/G,557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PX1012A-EL1/G,557 is usually 5 days.

3.What payment methods are accepted for PX1012A-EL1/G,557?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PX1012A-EL1/G,557 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PX1012A-EL1/G,557?

PX1012A-EL1/G,557 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PX1012A-EL1/G,557 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PX1012A-EL1/G,557?

For technical support, including PX1012A-EL1/G,557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PX1012A-EL1/G,557 requirements.

6.How does Aetrix verify that PX1012A-EL1/G,557 is sourced from the original manufacturer or authorized distributors?

All PX1012A-EL1/G,557 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PX1012A-EL1/G,557 meets industry standards.

7.What is the process for return or replacement of PX1012A-EL1/G,557?

All PX1012A-EL1/G,557 units undergo pre-shipment inspection (PSI). If there is an issue with PX1012A-EL1/G,557, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PX1012A-EL1/G,557 part is unused and in its original packaging.

Return procedure for PX1012A-EL1/G,557:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…