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  2. OpenCores - Wikipedia

    en.wikipedia.org/wiki/OpenCores

    The cores are implemented in the hardware description languages Verilog, VHDL or SystemC, which may be synthesized to either silicon or gate arrays. The project aims at using a common non-proprietary system bus named Wishbone, and most components are nowadays adapted to this bus. Among the components created by OpenCores contributors are:

  3. Serial Peripheral Interface - Wikipedia

    en.wikipedia.org/wiki/Serial_Peripheral_Interface

    Quad SPI (QSPI; different to but has same abbreviation as Queued-SPI described in § Intelligent SPI controllers) goes beyond dual SPI, adding two more I/O lines (SIO2 and SIO3) and sends 4 data bits per clock cycle. Again, it is requested by special commands, which enable quad mode after the command itself is sent in single mode.

  4. Wishbone (computer bus) - Wikipedia

    en.wikipedia.org/wiki/Wishbone_(computer_bus)

    This ambiguity is intentional. Wishbone is made to let designers combine several designs written in Verilog, VHDL or some other logic-description language for electronic design automation (EDA). Wishbone provides a standard way for designers to combine these hardware logic designs (called "cores"). Wishbone is defined to have 8, 16, 32, and 64 ...

  5. List of free electronics circuit simulators - Wikipedia

    en.wikipedia.org/wiki/List_of_free_electronics...

    List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE.The following table is split into two groups based on whether it has a graphical visual interface or not.

  6. Icarus Verilog - Wikipedia

    en.wikipedia.org/wiki/Icarus_Verilog

    Released under the GNU General Public License, Icarus Verilog is free software, an alternative to proprietary software like Cadence's Verilog-XL. As of release 0.9, Icarus is composed of a Verilog compiler (including a Verilog preprocessor) with support for plug-in backends, and a virtual machine that simulates the design.

  7. OpenSPARC - Wikipedia

    en.wikipedia.org/wiki/OpenSPARC

    OpenSPARC is an open-source hardware project, started in December 2005, for CPUs implementing the SPARC instruction architecture. The initial contribution to the project was Sun Microsystems' register-transfer level (RTL) Verilog code for a full 64-bit, 32-thread microprocessor, the UltraSPARC T1 processor.

  8. Universal asynchronous receiver-transmitter - Wikipedia

    en.wikipedia.org/wiki/Universal_asynchronous...

    Block diagram for a UART. A universal asynchronous receiver-transmitter (UART / ˈ juː ɑːr t /) is a peripheral device for asynchronous serial communication in which the data format and transmission speeds are configurable.

  9. Cypress PSoC - Wikipedia

    en.wikipedia.org/wiki/Cypress_PSoC

    The PSoC 4 features a 32-bit ARM Cortex-M0 CPU, with programmable analog blocks (operational amplifiers and comparators), programmable digital blocks (PLD-based UDBs), programmable routing and flexible GPIO (route any function to any pin), a serial communication block (for SPI, UART, I²C), a timer/counter/PWM block and more.