EP4SGX180KF40C2N Altera Stratix IV GX FPGA 175K Logic Elements 36 Transceivers 1517-FBGA

EP4SGX180KF40C2N Product Overview

The EP4SGX180KF40C2N is a high-end FPGA from Altera (now Intel) in the Stratix IV GX series, manufactured on advanced 40nm process technology. It is a flagship programmable logic device specifically designed for high-speed serial communication and high-density logic integration. This device features 175,750 Logic Elements (LEs), 70,300 Adaptive Logic Modules (ALMs), 13.31Mbits of embedded memory, and 744 user I/O pins, operating at up to 600MHz.

The core feature of EP4SGX180KF40C2N is its powerful high-speed transceiver capability, integrating 36 transceiver channels each supporting 600Mbps to 8.5Gbps data rates with total bandwidth up to 306Gbps. This makes it ideal for applications requiring massive high-speed data transmission, supporting various protocols such as PCIe, Gigabit Ethernet, CPRI, Serial RapidIO, and XAUI.

The device comes in a 1517-pin FC-FBGA package (40×40mm) with core voltage of 0.87V to 0.93V and commercial grade operating temperature of 0°C to 85°C. Although officially marked as obsolete, abundant inventory remains available in the market, serving applications requiring long lifecycle support.

EP4SGX180KF40C2N Core Features

Logic Resources： 175,750 Logic Elements, 70,300 Adaptive Logic Modules for ultra-high density logic design

Embedded Memory： 13,531,008 total RAM bits consisting of M9K and M144K blocks

DSP Processing： 672 embedded 18x18 hardware multipliers up to 600MHz for high-performance signal processing

High-Speed Transceivers： 36 full-duplex transceivers supporting 600Mbps to 8.5Gbps, total bandwidth 306Gbps

I/O Interfaces： 744 user I/O pins supporting LVDS, LVPECL, HSTL, SSTL standards

PCI Express Hard IP： Integrated PCIe Gen2 x8 hard IP supporting Endpoint and Root Port modes

Clock Management： 24 phase-locked loops with dynamic phase shifting and programmable bandwidth

Process Technology： 40nm CMOS technology with 0.87V to 0.93V core voltage

Package Type： 1517-pin FC-FBGA 40×40mm with 1.0mm ball pitch

Temperature Range： 0°C to 85°C commercial grade

MSL Level： 3 (168 Hours)

ECCN： 3A001A7A

EP4SGX180KF40C2N Applications

Communications Infrastructure： Wireless base stations, core routers, optical transport networks. 36 transceivers support CPRI, OBSAI, 10G Ethernet

High Performance Computing： Data center accelerators, ASIC prototyping platforms. High-density logic meets parallel computing demands

Military and Aerospace： Radar signal processing, electronic warfare, military communications, satellite processing

Medical Imaging： Ultrasound beamforming, CT reconstruction, MRI processing. 672 DSP multipliers for high-throughput medical imaging

Wired Communications： 40G/100G optical module test equipment, network protocol analyzers

Video Broadcast： High-end video switchers, broadcast video processing equipment

EP4SGX180KF40C2N Key Advantages

Flagship Transceiver Performance： 36 high-speed transceivers running up to 8.5Gbps each, total bandwidth over 300Gbps — the top configuration in Stratix IV GX family

High-Density Logic Integration： 175,750 logic elements with 13.31Mbit memory and 672 DSP multipliers enable single-chip complex system implementation

PCIe Gen2 Hard IP： Integrated x8 PCIe Gen2 hard IP reduces development effort and resource usage, supporting Endpoint and Root Port modes

Comprehensive Protocol Support： Supports PCIe, GigE, XAUI, SRIO, CPRI, Interlaken, eliminating external protocol conversion chips

40nm Advanced Process： Higher logic density and lower dynamic power compared to 65nm predecessors

Rich Clock Management： 24 PLLs for complex multi-clock domain designs, ensuring high precision and low jitter

Mature Development Ecosystem： Altera Quartus II suite with complete IP core library covering communications, storage, and DSP

Stable Supply Chain： Obsolete status with abundant global inventory priced between $388to$876, over 2,600 units in stock at major distributors

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FAQ:

1. What is the EP4SGX180KF40C2N and its key specifications?
   This is a high‑performance Altera Stratix IV GX FPGA built on a 40 nm process. It provides 175,000 logic elements (LEs), 8.1 Mb of embedded RAM, and 832 variable‑precision DSP blocks (18×18 multipliers). The device integrates 36 full‑duplex transceivers supporting data rates from 600 Mbps to 8.5 Gbps, a hardened PCIe Gen2 x8 interface, and multiple 10/100/1000 Ethernet MACs. Housed in a 1517‑pin FBGA package (40 mm × 40 mm, 1.0 mm pitch), it offers approximately 880 user I/O pins. The “C2” speed grade indicates the fastest commercial‑grade speed bin, and the “N” suffix designates a lead‑free package. This FPGA is designed for high‑bandwidth communications, military/aerospace digital signal processing, and advanced prototyping applications.

2. How does the EP4SGX180KF40C2N compare to the larger EP4SGX230?
   Both are members of the Stratix IV GX family with identical transceiver and hard‑IP capabilities. The key difference is logic density: the EP4SGX230 provides 228,000 logic elements, approximately 30 % more than the 180’s 175,000 LEs. The larger device also offers more embedded RAM and DSP blocks. Both use the same 1517‑pin FBGA package and are pin‑compatible, allowing seamless migration between the two for designs that need to scale up. Choose the EP4SGX180 when 175K LEs are sufficient; the EP4SGX230 gives extra headroom for larger designs without changing the board layout.

3. What transceiver capabilities does the EP4SGX180 offer, and what protocols are supported?
   It integrates 36 high‑speed transceivers that operate from 600 Mbps to 8.5 Gbps. These transceivers support a wide array of protocols: PCIe Gen1/Gen2, Gigabit Ethernet, XAUI, Serial RapidIO, CPRI/OBSAI, Fibre Channel, SATA, and HDMI. The transceivers feature dynamic reconfiguration, adaptive equalization, and low jitter, making them suitable for backplane, optical, and cable‑based links. The C2 speed grade guarantees these transceivers can operate at their maximum rated line rate across commercial temperature range.

4. How many I/O pins does the 1517‑pin FBGA provide, and what I/O standards are supported?
   The EP4SGX180KF40C2N offers approximately 880 user I/O pins. These I/Os are organized in banks that can independently support a huge variety of single‑ended and differential standards: LVTTL, LVCMOS (1.2 V – 3.3 V), SSTL, HSTL, LVDS, mini‑LVDS, RSDS, and LVPECL. The I/O pins feature programmable slew rate, on‑chip termination (OCT), and dynamic calibration. This allows direct interface to DDR2/DDR3/QDRII+ SRAM, legacy buses, and high‑speed serial protocols without external termination resistors.

5. What hardened IP blocks are integrated, especially for PCIe and Ethernet?
   The FPGA contains a built‑in PCIe Gen2 x8 hard‑IP block that can function as a root port or endpoint, with full Transaction Layer support. It also includes Tri‑Speed Ethernet MACs (10/100/1000 Mbps) directly usable without consuming logic. Additional hardened blocks include phase‑locked loops (PLLs), DLLs, and memory controllers. These hard IPs save considerable logic resources and simplify board design for communication‑centric applications.

6. What DSP and memory resources are available on the EP4SGX180?
   It features 832 variable‑precision DSP blocks, each configurable as four 18×18 multipliers, two 18×36, or a 36×36 multiply‑accumulate unit. This delivers enormous processing power for digital filters, FFTs, and video processing. Embedded memory includes 8.1 Mb of block RAM (M9K and M144K types) with true dual‑port operation, ideal for high‑bandwidth buffering, FIFOs, and look‑up tables. The combination of DSP and RAM makes the device a strong candidate for software‑defined radio, radar, and imaging.

7. What is the typical power consumption, and how can it be optimized?
   Stratix IV GX FPGAs are built for performance, and the EP4SGX180 typically consumes between 10 W and 25 W depending on resource utilization and clock frequency. The 40 nm process and advanced Programmable Power Technology allow the design software to automatically select high‑speed or low‑power modes for individual tiles, reducing total power. Additional techniques such as clock gating, reducing toggle rates, and using sleep modes help lower power further. A heatsink and proper airflow are recommended for sustained high‑load operation.

8. How do I configure and program the EP4SGX180, and what development tools are required?
   Configuration is stored in external non‑volatile memory (e.g., EPCQ‑L flash or MAX II CPLD) because Stratix IV uses SRAM‑based configuration cells. The FPGA loads its bitstream via Fast Passive Parallel (FPP), Active Serial (AS), or JTAG interfaces. Design entry, synthesis, and place‑and‑route are performed with Intel Quartus Prime Standard Edition (the free Lite Edition has limited support for this device). A USB‑Blaster download cable is used for programming and debugging. The SignalTap II embedded logic analyzer is built into Quartus for real‑time debugging.

9. How does the Stratix IV GX compare to the older Stratix III?
   Stratix IV GX is a major step forward from Stratix III. It offers 1.5× to 2× the logic density at the same node, higher‑speed transceivers (8.5 Gbps vs 3.125 Gbps), improved DSP (variable‑precision), and a more advanced 40 nm process that delivers ~30 % lower total power for equivalent designs. Stratix IV also adds hardened PCIe Gen2 and Tri‑Speed Ethernet MACs, which were not present in Stratix III. For designs with high‑speed serial connectivity, Stratix IV provides a significantly more capable and power‑efficient platform.

10. What are the most typical applications for the EP4SGX180KF40C2N?
    It is widely used in wireless infrastructure (CPRI baseband processing), high‑performance test & measurement, military and aerospace digital signal processing, broadcast video (SDI, codecs), advanced industrial imaging, and multi‑port Ethernet aggregation. The combination of 175K logic elements, 36 transceivers, PCIe Gen2, and a rich set of DSP blocks makes it a versatile workhorse for data‑plane and communication systems that require high bandwidth and proven reliability.