What is Scatter-Gather DMA Controller?
Scatter-Gather DMA Controller is a DMA IP core from Lattice Semiconductor Corp. listed on Semi IP Hub.
Vendor:
Lattice Semiconductor Corp.
Category:
DMA
Scatter-Gather DMA Controller
Direct Memory Access (DMA) is a technique for transferring blocks of data between system memory and peripherals without a process…
Overview
Direct Memory Access (DMA) is a technique for transferring blocks of data between system memory and peripherals without a processor (e.g., system CPU) having to be involved in each transfer. DMA not only offloads a system’s processing elements, but can transfer data at much higher rates than processor reads and writes.
Scatter-Gather DMA augments this technique by providing data transfers from one non-contiguous block of memory to another by means of a series of smaller contiguous-block transfers. The Lattice Scatter-Gather DMA Controller core implements a configurable, multi-channel, WISHBONE-compliant DMA controller with scatter-gather capability.
Scatter-Gather DMA augments this technique by providing data transfers from one non-contiguous block of memory to another by means of a series of smaller contiguous-block transfers. The Lattice Scatter-Gather DMA Controller core implements a configurable, multi-channel, WISHBONE-compliant DMA controller with scatter-gather capability.
Key features
- Supports up to 16 physical channels
- Up to 8 sub-channels per physical channel
- Four priority levels using round-robin arbitration (weighted or simple)
- WISHBONE bus widths from 8 to 128 bits
- Simple DMA, split transfers, scatter-gather
- Direct interface to external RAM for packet buffering
- Autonomous and hardware-directed retry
- Supports WISHBONE burst and classic-cycle transfers
- Supports centralized and distributed DMA control architectures
Block Diagram
DMA-SG block diagram
Specifications
Identity
Part Number
DMA-SG
Vendor
Lattice Semiconductor Corp.
Type
Silicon IP
Files
Note: some files may require an NDA depending on provider policy.
Provider
HQ:
USA
Frequently asked questions about DMA IP
How should engineers evaluate this DMA?
Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this DMA IP.
Can this semiconductor IP be compared with similar products?
Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.