Woodcliff Lake, NJ — March 10, 2026
New standalone core delivers ultra-high-throughput, low-latency UDP/IP offload for data centers, AI training, media streaming, HPC, and real-time systems.
CAST, a long-established provider of semiconductor intellectual property cores, today announced a new hardware UDP/IP protocol stack IP core that enables data transfer at speeds up to 400 Gbps in ASIC implementations.
Designed for standalone operation, the new UDPIP-400G-ASIC core offloads UDP/IP encapsulation and related protocol processing from host processors, enabling extremely high-speed communication in systems with or without an embedded CPU. The result is a lean, efficient networking solution for ASIC and SoC developers building products that demand very high throughput, low latency, and low power.
CAST believes the UDPIP-400G-ASIC core is among the industry’s highest-performing standalone UDP/IP hardware stack IP offerings for ASIC implementation. (See the product brief for sample implementation results.)
Designed to support highly parallel, multi-stream architectures, the core supports up to 32 transmit and 32 receive channels. Each channel exposes an independent streaming interface towards the on-chip SoC, which is associated with a specific UDP port on the receive side, and is configurable with destination network parameters on the transmit side.
Built for straightforward SoC integration, the UDPIP-400G-ASIC core supports AMBA® AXI4-Stream™ or Avalon®-ST interfaces for packet data and AMBA AHB™, AXI™, Avalon®-MM, Wishbone, or generic SRAM-like interfaces for control and status functions. CAST supplies the core in synthesizable RTL and encrypted RTL forms, together with a self-checking testbench, scripts, vectors, expected results, and full documentation.
About CAST
Computer Aided Software Technologies, Inc. (CAST) is a leading supplier of semiconductor IP for SoC, ASIC, and FPGA designs. CAST’s IP portfolio includes processors and microcontrollers; compression cores; interface IP for automotive, aerospace, and industrial applications; peripheral device IP; and hardware security building blocks and SoC security solutions. Since 1993, CAST has empowered chip designers worldwide with A Better IP Experience, comprising production-quality IP, comprehensive documentation, and expert technical support.
Learn more at www.cast-inc.com and follow CAST on LinkedIn.
CAST is a trademark of Computer Aided Software Technologies, Inc. Other trademarks are the property of their owners.
Link to Press Release
New standalone core delivers ultra-high-throughput, low-latency UDP/IP offload for data centers, AI training, media streaming, HPC, and real-time systems.
CAST, a long-established provider of semiconductor intellectual property cores, today announced a new hardware UDP/IP protocol stack IP core that enables data transfer at speeds up to 400 Gbps in ASIC implementations.
Designed for standalone operation, the new UDPIP-400G-ASIC core offloads UDP/IP encapsulation and related protocol processing from host processors, enabling extremely high-speed communication in systems with or without an embedded CPU. The result is a lean, efficient networking solution for ASIC and SoC developers building products that demand very high throughput, low latency, and low power.
Ready for Demanding Applications
The UDPIP-400G-ASIC core is aimed at designs for data centers, AI training and inference fabrics, high-performance computing platforms, storage and server interconnects, SmartNICs, radar and sensor-fusion systems, real-time data-acquisition equipment, backbone networking, media transport, and other data-intensive applications.CAST believes the UDPIP-400G-ASIC core is among the industry’s highest-performing standalone UDP/IP hardware stack IP offerings for ASIC implementation. (See the product brief for sample implementation results.)
Hardware Network Functions, Multiple Channels, and Autonomous Operation
The new core extends CAST’s proven UDP/IP hardware stack technology into the 400 Gbps class for ASIC use. It supports a rich set of network functions needed for robust deployment, including ARP, ICMP, DHCP, VLAN tagging, multicast capability, UDP/IP checksum generation and validation, and flexible packet filtering. The core is a complete custom hardware stack—not just an accelerator—and once configured it operates autonomously, requiring no CPU assistance whatsoever (it can actually operate in CPU-less systems). With zero software overhead, the core even handles in hardware functions typically left to software, such as DHCP and ICMP.Designed to support highly parallel, multi-stream architectures, the core supports up to 32 transmit and 32 receive channels. Each channel exposes an independent streaming interface towards the on-chip SoC, which is associated with a specific UDP port on the receive side, and is configurable with destination network parameters on the transmit side.
Built for straightforward SoC integration, the UDPIP-400G-ASIC core supports AMBA® AXI4-Stream™ or Avalon®-ST interfaces for packet data and AMBA AHB™, AXI™, Avalon®-MM, Wishbone, or generic SRAM-like interfaces for control and status functions. CAST supplies the core in synthesizable RTL and encrypted RTL forms, together with a self-checking testbench, scripts, vectors, expected results, and full documentation.
Available Now
With the introduction of UDPIP-400G-ASIC, CAST expands its Internet Protocol Hardware Stacks family with a solution for designers who need the performance of dedicated UDP/IP hardware processing at the highest data rates. The new core is available now, with flexible licensing terms including royalty-free. Visit the UDPIP-400G-ASIC product page for technical details, or email info@cast-inc.com.About CAST
Computer Aided Software Technologies, Inc. (CAST) is a leading supplier of semiconductor IP for SoC, ASIC, and FPGA designs. CAST’s IP portfolio includes processors and microcontrollers; compression cores; interface IP for automotive, aerospace, and industrial applications; peripheral device IP; and hardware security building blocks and SoC security solutions. Since 1993, CAST has empowered chip designers worldwide with A Better IP Experience, comprising production-quality IP, comprehensive documentation, and expert technical support.
Learn more at www.cast-inc.com and follow CAST on LinkedIn.
CAST is a trademark of Computer Aided Software Technologies, Inc. Other trademarks are the property of their owners.
Link to Press Release