PCI-to-ISA Bridge

Block Diagram

Solution Type: IP Core

End Market: Automotive, Broadcast, Computer & Storage, Consumer, Industrial, Medical, Military, Test & Measurement, Wireless, Wireline

Evaluation Method: OpenCore, OpenCore Plus, Source Code

Technology: Interface Protocols: PCI

Arria Series: Intel® Arria® 10, Arria® V, Intel® Arria® 10 SoC, Arria® V SoC

Cyclone Series: Cyclone® IV, Cyclone® V, Cyclone® V SoC

MAX Series: Intel® MAX® 10, MAX® V

Stratix Series: Stratix® IV, Stratix® V


The PCI-to-ISA bridge functions as a PCI target on the PCI bus. PCI transactions addressed to this target are forwarded to the ISA bus. If it is a read transfer, the core waits for all read data from the ISA slave and returns the data to the PCI bus. If it is a write transfer, the core posts the write data to its internal write buffer, terminates the PCI bus, and then writes the data to the ISA slave. With a typical PCI bus running at 33 MHz, this core operates the ISA bus at one-fourth the frequency of the PCI bus. The ISA bus operates at 8.33 MHz. The PCI-to-ISA bridge core supports 8-bit and 16-bit ISA bus devices, while the PCI bus is 32-bits wide. The core is capable of taking one PCI transfer and converting it into four or two transfers on the ISA bus. This megafunction sizes vary with features and customization. Eureka Technology can customize designs according to specific user requirements.


  • Complies with PCI bus specification 2.1 and 2.2
  • Converts PCI transactions to industry-standard architecture (ISA) bus transactions
  • Functions as an ISA master on an ISA bus
  • Nios II embedded processor interface
  • Functions as a PCI target on a PCI bus

Device Utilization and Performance

592 LE

Getting Started

For additional information, contact Eureka Technology, Inc. at: Tel. (650) 960-3800 Email: info@eurekatech.com WWW: http://www.eurekatech.com

IP Quality Metrics

Year IP was first released2000
Latest version of Quartus supported15.1
Altera Customer Use
IP has been successfully implemented in production with at least one customerY

Customer deliverables include the following:

  • Design file (encrypted source code or post-synthesis netlist)
  • Simulation model for ModelSim Altera edition
  • Timing and/or layout constraints
  • Testbench or design example
  • Documentation with revision control
  • Readme file
Parameterization GUI allowing end user to configure IPN
IP core is enabled for OpenCore Plus SupportY
Source language
Verilog; VHDL
Testbench languageVerilog; VHDL
Software drivers providedN
Driver OS supportAll PCI compatible
User InterfaceAXI; Avalon-MM; Other: Generic/Wishbone/PLB
IP-XACT Metadata includedN
Simulators supportedVerilog/VHDL
Hardware validated N. Altera Board Name NULL
Industry standard compliance testing performed
If yes, which test(s)?PCI Compliance
If yes, on which Altera device(s)?Flex10K
If Yes, date performed
IP has undergone interoperability testing
Interoperability reports available  Y

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