1. Starting from the ibm pc xt architecture...
In the initial PC design, CPU, ram, and I/O are connected by a bus, and all components must work in the synchronous mode, the CPU determines the frequency at which other devices operate. This will bring about a locked to each other effect, that is, everyone is limited to a universal clock frequency (clock frequency) that all devices can withstand, the overall performance of the system is not high.
2. Th
In the previous article, we briefly introduced the content of the CAN bus protocol. Now let's take a look at the physical layer and packet type of the CAN bus protocol. Based on my previous learning experience, I know that in the protocol, we usually use the packet structure and frame form for data transmission. The CAN Bus Protocol has a similar definition.
The
With the new D-BUS and Linux Desktop Application Communication-Linux general technology-Linux programming and kernel information, the following is a detailed reading. D-BUS is a promising message bus and activity system that is starting to penetrate into Linux®Desktop. Understand the reason for creating it, its purpose, and development prospects.
D-
The message bus and activity system penetrate into the Linux desktop-general Linux technology-Linux programming and kernel information. The following is a detailed description. D-BUS is a promising message bus and activity system that is starting to penetrate into Linux®Desktop. Understand the reason for creating it, its purpose, and development prospects.
D-
Source: http://www.2cto.com/os/201410/346704.html
AMBAAMBA (Advanced microprocessor bus Architecture) is an open SOC bus standard proposed by arm, which is now widely used in RISC kernel.Amba defines a multi-bus system (multilevel busing systems) that includes a system bus and a slightly lower level of peripheral bus.
1. Start with the IBM PC XT architecture ...In the first PC design, the Cpu/ram/io is connected by a bus, and all the parts must work under synchronous mode, and the other devices determined by the CPU work at what frequency (Frequency). This brings an "interlock" (Locked to every other)effect, that is, everyone is limited to a universal clock frequency that all devices can withstand (clock Frequency), the overall performance of the system is not high
One 1 I2C bus: Two-line serial bus interface, SDA (data line) and SCL (clock signal line). The SCL is generally controlled by the main device, it is used to control the start, end, and direction of data transmission (R/W ).
2 when the SCL is in a high-power period, SDA jumps from high to low, that is, the master device sends a start signal through I2C (all slave devices are in the ready state); when the S
one, single Bus Protocol (1-wire)
1. Definition: The host and slave through 1 lines of communication, on a bus can be attached to the number of slave devices almost unrestricted.
2. Features: This is a communications technology introduced by Dallas Semiconductor. It uses a single signal line, both to transmit the clock, but also to transfer data, and data transmission is bidirectional.
3. Advantages: Sin
What is AMBA On-Chip Bus?
With the development of deep sub-micron technology, the scale of Integrated Circuit chips is growing. NumberIC from Time Series-driven design method, to IP Reuse-based Design MethodAnd has been widely used in SoC design.In the SOC design based on IP address multiplexing, on-chip bus design is the most critical issue.. Therefore, many on-chip
I²C architecture is divided into three parts: I²c core, bus drive, device driverI²c Core :I²c Core provides a set of interface functions that do not depend on hardware, and the I²c-bus driver and device driver depend on the core of I²c as a link.(1) Add/Remove I2c_adapterint I2c_add_adapter (struct i2c_adapter *adap);int I2c_del_adapter (struct i2c_adapter *adap);(2) Add/Remove I2c_driverint i2c_register_dr
Anhui Tongan Automobile Co., Ltd. is a service-type enterprise specializing in the sales, leasing and management of school buses.Anhui Tongan Automobile Co., Ltd. is dedicated to building a professional school bus sales and service organization to improve the school bus management system, build considerate school bus service facilities, and ensure the safe operat
A non-intrusive cache system has des an external cache and a plurality of On-Chip caches each having a set of tags associated therewith, with at least one of the On-Chip caches including data which is absent from the external cache. A pipelined Snoop bus is ported to each of the set of tags of the plurality of On-Chip caches and transmits a snoop address to the plurality of On-Chip caches. A system interface unit is responsive to a received ed Snoop r
Bus Operation Sequence and operation mode operation sequence (timing): Effective sequence and cooperation relationship of each signal
(1) Synchronous Mode• Sending and receiving are at a unified pace, with a unified clock signal.• The synchronous clock determines the sending and receiving time completely without a response signal.• Example: Bus read Operations(2) asynchronous mode• The sender and receiver d
Mainstream platform frontend bus frequencyInter PlatformSai Yang series platform: Bus frequency: 800 MHz Pentium dual-core series platform: Bus frequency: 800 MHz Core 2 dual-core 7000 Series platform: Bus frequency: 1066 MHz Core 2 dual-core 8000 series platform: bus freque
There is a problem with the "SM bus controller" and "other PCI bridge devices" Driver in the Device Manager, smpci
After WinXP reinstalls the system, there is a yellow question mark in the Device Manager, which is "SM bus controller" and "other PCI bridge devices". The motherboard is Rainbow 7 and the chipset is geForce 7025, nanqiao is nForce 630a, And it is useless to use the motherboard driver of the rai
1. Single-bus structure
It mounts the CPU, primary memory, and I/O devices on a group of bus, allowing direct information exchange between I/O and primary memory. This structure is simple and easy to expand, but all the transfers are through this shared bus, so it is easy to form a bottleneck of computer systems. It also does not allow more than two components t
In the previous article "Automatic layout of telecommunication network topology Diagram", we introduced the knowledge of the automatic layout of HT for Web Telecommunication network topology diagram, but did not describe the usage of various automatic layouts in depth, and we will focus on the concrete implementation of the bus here today.In the HT for WEB Connection manual, it is explained that the type of connection can be customized via HT. Default
Tags: Ice pen and inux DDR source sum list likeA Universal Serial Bus (USB) is a connection between a host and a peripheral device. The USB bus specification has version 1.1 and 2.0, and of course now has 3.0. The USB1.1 supports two transmission speeds: 1.5Mbps at low speeds and 12Mbps at high speeds. The USB2.0 can transmit speeds up to 480Mbps. USB2.0 backwards compatible with USB1.1, the USB1.1 device c
From: http://blog.csdn.net/flowingflying/article/details/5412711
The D-bus method is very important in mobile phone operating systems, including Linux-based operating systems such as maemo and moblin. It is estimated that andriod is also widely used. For more information about D-bus, see:Http://www.freedesktop.org/wiki/Software/dbus.
Messages are transmitted between processes through D-
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