Overview
The AHB Single Channel DMA Controller core is a configurable single channel direct memory access controller. The DMA IP Core is a Verilog HDL design that can be used in ASIC, Structured ASIC and FPGA designs. The design is intended to be used with AMBA based systems as a controller to transfer data directly from system memory to memory or system memory to peripheral device or IP Core.
Once set up, the DMA controller is primarily an AHB Master component, which initiates data transfers across the AHB bus to/from a peripheral device through the DMA Buffer. The DMA Buffer is a 16x32 FIFO, which is useful for peripheral devices requiring a steady stream of data such as an LCD Controller, Ethernet MAC or other communication device.
The DMA controller contains useful features such incrementing and non-incrementing addressing and link list operation. Linked list support is useful for non-contiguous memory transfer operations.
Multiple DMA controllers can be placed in the AHB System to provide multiple channel DMA control.
Learn more about DMA IP core
There are many IP’s today . These IP’s can be simple IP’s like Timer to complex IP’s like Accelerators. In Most of the cases IP’s are Integrated in standard way. There are cases where you have the option of Integrating it differently. This goes un-noticed or unable to be implemented due to time constraints. One such IP that would be discussed in this paper is DMA . This paper tries to explain idea of Integrating Direct Memory access(DMA) and Interrupt Control Unit(ICU) differently but final implementation requires some changes in IP. There is a possibility that alternate design explained below may be already implemented.
By Dany Nativel, Jacko Wilbrink and Tim Morin
As SoC architectures adopt AMBA® 5 fabrics and components, many proven IP blocks still rely on AMBA® 4 or earlier interfaces. That creates a common integration problem: how do designers connect newer AMBA® 5 system components to existing IP without redesigning the IP or replacing verified blocks?
This article shares our experience using Google’s FlatBuffers library as a memory subsystem stress test on the Andes AX46MPV RISC-V core.
This work investigates a novel threat model in which standard cells are considered untrusted. Our proposed threat model provides the design house with a tampered standard cell library. The intended netlist is synthesized and implemented using the tampered library.
