DMA Controller: Operating Voltage 1.8V to 3.3V

Component Specifications

Definition

A Direct Memory Access (DMA) controller is an integrated circuit or subsystem within a processor/controller IC that facilitates high-speed data transfers between peripheral devices (such as storage, network interfaces, or audio/video components) and the system's main memory. It operates independently of the central processing unit (CPU), allowing the CPU to perform other tasks while data transfers occur, thereby improving overall system efficiency and reducing latency. The DMA controller handles address generation, data counting, and transfer control signals, coordinating with the system bus and memory controller to execute programmed I/O operations.

Working Principle

The DMA controller operates by taking control of the system bus from the CPU during data transfer cycles. It receives transfer requests from peripheral devices, programs source and destination addresses, sets the data block size, and initiates the transfer. Using bus arbitration, it temporarily halts CPU access to memory, performs the data movement directly between the peripheral and memory, and then releases the bus back to the CPU. This is managed through registers that store transfer parameters and status flags, with interrupt signals notifying completion or errors.

Materials

Typically fabricated using silicon-based semiconductor materials (e.g., CMOS technology) on integrated circuits. May include copper interconnects, aluminum bonding wires, and ceramic or plastic packaging materials.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bus Width	8-bit, 16-bit, 32-bit, or 64-bit
Addressing Range	Up to 64-bit addressing in modern systems
Operating Voltage	1.8V to 3.3V
Power Consumption	Low power, often less than 100mW in active mode
Temperature Range	-40°C to +85°C (industrial grade)
Data Transfer Rate	Up to several GB/s depending on bus architecture
Number Of Channels	Typically 4 to 16 channels

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO/IEC 11801, IEEE 1284, DIN 41612

Parent Products

This component is used in the following industrial products

Processor/Controller IC

An integrated circuit that serves as the central processing or control unit within a communication module, executing instructions and managing data flow.

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Host Bus Interface Controller

Electronic component that manages data transfer between the frame grabber/vision interface card and the computer's host bus

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Engineering Analysis

Risks & Mitigation

Data corruption due to bus contention
Address line faults causing memory overwrites
Thermal overload in high-performance applications
Electromagnetic interference affecting signal integrity

FMEA Triads

Trigger: Voltage spikes or power supply instability
Failure: Controller reset or lockup during data transfer
Mitigation: Implement robust power conditioning circuits and surge protection

Trigger: Clock signal jitter or skew
Failure: Timing violations leading to data errors
Mitigation: Use precision oscillators and proper signal routing techniques

Trigger: Software misconfiguration of DMA registers
Failure: Incorrect data transfer parameters causing system hangs
Mitigation: Implement hardware validation checks and software error handling routines

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Signal timing tolerance within ±5% of clock period, voltage tolerance ±10% of nominal

Test Method

Functional testing via automated test equipment (ATE), boundary scan (JTAG) for connectivity, and in-system validation using benchmark transfer routines

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of DMA Controller

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

C*Core Technology Co.,Ltd.

Tianjin, CN

Also makes: Flash Controller

Listed on the company's own website · profile compiled by CNFX from public sources

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary advantage of using a DMA controller?

The primary advantage is reduced CPU overhead, as it allows data transfers between peripherals and memory to occur without CPU intervention, freeing the CPU for other computational tasks and improving system performance.

Can a DMA controller handle multiple data transfers simultaneously?

Yes, most DMA controllers support multiple channels, allowing concurrent management of several data transfers between different peripherals and memory locations.

What are common failure modes in DMA controllers?

Common failures include address corruption, data bus conflicts, timing errors, and overheating due to prolonged high-speed operations, which can lead to data loss or system crashes.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

DMA Controller