Editorial Technical Reference

Host Bus Interface

This page explains how Host Bus Interface is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The interface component within a RAID controller that manages communication between the controller and the host computer system.

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Product Specifications

Technical details and manufacturing context for Host Bus Interface

Definition

A host bus interface is an electronic component integrated into RAID controllers that serves as the communication bridge between the RAID controller and the host computer's system bus. It handles data transfer protocols, command queuing, and signal conversion to ensure efficient communication between storage arrays and the host processor. This interface determines the maximum theoretical bandwidth available for data transfers between the RAID array and the host system.

Typical directory reference ranges for this component include a bus width of 32–64 bits, a bus speed of 33–400 MHz, and a data transfer rate of 266–3200 MB/s per direction. Operating voltage is commonly 3.3–5 V, with a signal swing of 0.5–1.8 V. The operating temperature range is 0–70 °C, while storage temperature ranges from -40 to 85 °C. Relative humidity (non-condensing) is 10–90%. Power consumption depends on bus width and speed, typically 5–15 W. The connector type is PCIe x4–x16 per the PCIe Base Spec. Mean time between failures (MTBF) is often 500,000–1,000,000 hours, and weight ranges from 50–200 g depending on board size and components.

Materials commonly used include silicon, copper, and fiberglass epoxy substrate. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. Standards listed are procurement references and do not imply certification or compliance.

Working Principle

The host bus interface receives storage commands and data requests from the host computer's operating system via the system bus (such as PCIe). It converts these requests into a format understandable by the RAID controller's processor, manages command queuing and prioritization, and handles the bidirectional data flow between host memory and the RAID controller's cache. When data is ready for transfer, it manages the physical signaling and protocol compliance required by the specific bus standard.

Common Materials

silicon, copper, fiberglass epoxy substrate

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bus Width	32–64 bit	Determines data transfer parallelism.
Bus Speed	33–400 MHz	Higher speed increases throughput.
Data Transfer Rate	266–3200 MB/s	Peak bandwidth per direction.
Operating Voltage	3.3–5 V	Logic level compatibility.
Signal Swing	0.5–1.8 V	Affects noise margin.
Operating Temperature	0–70 °C	Industrial grade may extend to -40–85.
Storage Temperature	-40–85 °C	Non-operating survival range.
Relative Humidity	10–90 %	Non-condensing.
Power Consumption	5–15 W	Depends on bus width and speed.
Connector Type	PCIe x4–x16	Physical interface standard.PCIe Base Spec
MTBF	500000–1000000 h	Reliability indicator.
Weight	50–200 g	Depends on board size and components.

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

Components / BOM

PHY (Physical Layer) Part
Handles the physical signaling, clock recovery, and electrical characteristics of the interface

Material: silicon
Protocol Controller
Manages the communication protocol stack and command processing

Material: silicon
Buffer Memory Part
Temporary storage for data during transfer between host and controller

Material: silicon
Connector Part
Physical interface for connecting to the host system's bus

Material: copper alloy with gold plating

Applied To / Applications

This component is essential for the following industrial systems and equipment:

RAID Controller

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Manufacturers of Host Bus Interface

Manufacturer profiles associated with Host Bus Interface.

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Frequently Asked Questions

What is the role of a host bus interface in a RAID controller?

It manages communication between the RAID controller and the host computer's system bus, handling data transfer protocols, command queuing, and signal conversion.

What are typical bus width and speed ranges?

Directory reference ranges are 32–64 bits for bus width and 33–400 MHz for bus speed. Actual values depend on the specific model and must be confirmed with the manufacturer.

Which connector types are commonly used?

The connector type is typically PCIe x4–x16, as per the PCIe Base Spec. Verify compatibility with your system.

What materials are used in this component?

Common materials include silicon, copper, and fiberglass epoxy substrate. These are typical and may vary by manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (electronic component)
other spec:	PCIe 3.0/4.0/5.0 compliant, 8-16 lane configurations, 12V power input ±5% tolerance
temperature:	0°C to 70°C (operating), -40°C to 85°C (storage)

Host Bus Interface

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards