PCI Bus Uses 50, PCI Bus Uses

PCI bus: 32-bit synchronous multiplexing bus.

1. PCI and CPU buses are extended from the bridge chip, and now most motherboards use the north-south dual-chip bridging method.

Northbridge. Responsible for high-bandwidth data flows.

The south bridge is responsible for the low-bandwidth signals of the external input and output. However, there are also some motherboards with a single bridge chip, where one chip is responsible for all the signal bridging work.

2. PCI bus.

It is a tree-like structure and is independent of the CPU bus and can be operated in parallel with the CPU bus. The PCI bus can be connected to PCI devices and PCI bridges.

The PCI data is transmitted to the CPU through the North Bridge, and the North Bridge implements the address cluster mapping of the CPU and the PCI space, so that the two can communicate. The south bridge handles low-speed signals, peripheral-driven communication, and communicates with input and output devices via the north bridge.

A yellow question mark indicates that Device Manager does not recognize the device and a device driver needs to be installed. A yellow exclamation point indicates that the alternate manager recognizes the device, but there is a problem with the device driver and the new device driver needs to be pointed out more quietly.

PCI bus: The bandwidth of a common PCI bus is generally 132 Mb S (at 32-bit 33MHz) or 264 Mb S (at 32-bit 66Mt). For ordinary sound cards, 100 Gigabit network cards, modem cards and other expansion devices, the transmission rate of 132MB s is generally used, and the gold finger feature of this device is generally corresponding to the PCI slot (long-short).

For some PCI graphics cards, Gigabit LAN cards, disk array cards, or FireWire cards and other PCI devices that require higher bandwidth, the bandwidth of 264MB s can generally be used, and the characteristic of this device is that the gold finger is generally three-stage (short-long-short). As for whether the device works at 66MHz, you can check it through the software everest.

In the PCI Device column, select Need to observe the device and check whether the 66MHz operation is supported, if it is not supported, it means that the device can only use a maximum bandwidth of 133MB s.

The PCI bus is a tree-like structure and is independent of the CPU bus and can be operated in parallel with the CPU bus. The PCI bus can be connected to PCI devices and PCI bridges.

The data of the PCI is transmitted to the CPU through the northbridge, and the northbridge implements the address mapping of the CPU and the PCI space, so that the two can communicate. The south bridge handles low-speed signals, peripheral-driven communication, and communicates with input and output devices via the north bridge.

By bridging the chip! That's what the North-South Bridge does.

PCI, which stands for Peripheral Device Interconnection, is a local parallel bus standard introduced by PCISIG. From a structural point of view, PCI is a first-level bus inserted between the CPU's first quotient and the original system bus, and a bridge circuit is used to realize the management of this layer, and the interface between the upper and lower levels is realized to coordinate the transmission of data.

The PCI bus is characterized by the coexistence of multiple buses, and the use of PCI bus can allow multiple buses to coexist in one system, accommodating devices of different speeds to work together; Independent of the CPU, the PCI bus is not tied to a specific processor; Automatic identification and configuration of peripherals for easy user use; Ability to operate in parallel; It greatly alleviates the bottleneck of data and enables the functions of high-performance CPUs to be fully utilized.

What is PCI bus, explanation of computer terminology

PCI (Peripheral Ponent Interconnect) is a bus structure developed by SIG Group. It has a data transfer rate of 132 MB s and a strong load capacity, which can be applied to a variety of hardware platforms, and is compatible with ISA and EISA buses.

Difference between PCI and PCI-E on motherboard:

First, the color is different.

PCI interfaces are usually white, and PCI-E interfaces are usually distinguished from PCI interfaces by other colors.

Second, the length is different.

PCI-E interfaces are significantly longer than PCI interfaces.

3. Compatibility is different.

PCI-E is compatible with current PCI technologies and devices at the software level, and PCI-E is currently the mainstream of graphics card interfaces.

Fifth, the level is different.

PCI slots are expansion slots based on PCI local buses (Pedpherd Component Interconnect), and PCI-E is an upgraded version of PCI. It is also an alternative to PCI later.

Fifth, the broadband transmission speed is different.

PCI-E slots have about 4 times the transfer rate of PCI.

Sixth, the transmission mode is different.

PCI-E differs from PCI in that it enables a shift in transmission from parallel to serial. PCI-E is a point-to-point serial connection that supports hot-swappable and hot-swappable features.

Categories: Computer, Networking, >> Hardware.

Analysis: PCI is the abbreviation of Peripheral Component Interconnect, which is the most widely used interface in personal computers today, and almost all motherboard products have this slot. PCI slots are also the type of motherboard with the largest number of slots, on the current popular desktop motherboard, ATX structure motherboards generally have 5 6 PCI slots, and smaller MATX motherboards also have 2 or 3 PCI slots, which shows its wide range of applications.

PCI is a local bus introduced by Intel in 1991. From a structural point of view, PCI is a first-level bus inserted between the CPU and the original system bus, and a bridge circuit is used to realize the management of this layer, and realize the interface between the upper and lower levels to coordinate the transmission of data. The manager provides signal buffering to support 10 peripherals and maintain high performance at high clock frequencies, and it provides a connection interface for graphics cards, sound cards, network cards, modems, etc., and it operates at 33MHz to 66MHz.

The earliest PCI bus was proposed to work at 33MHz frequency, and the transmission bandwidth reached 133MB S (33MHz x 32bit 8), which basically met the development needs of processors at that time. With the demand for higher performance, the 64-bit PCI bus was proposed in 1993, and later the frequency of the PCI bus was proposed to be increased to 66MHz. At present, 32-bit and 33MHz PCI buses are widely used, and 64-bit PCI slots are more used in server products.

Since the PCI bus has only 133MB s of bandwidth, it is more than enough for most input and output devices such as sound cards, network cards, and ** cards, but it cannot meet the needs of increasingly powerful graphics cards. At present, graphics cards with PCI interface are rare, only available on older PCs, and manufacturers rarely launch products with such interfaces.