In order to allow both bus widths, VME uses two different Eurocard connectors, P1 and P2. P1 contains three rows of 32 pins each, implementing the first 24 address bits, 16 data bits and all of the control signals. P2 contains one more row, which includes the …

1999年8月11日 · These pins were added to the 160 pin P1/J1 and P2/J2 connectors in the VME64x specification. The VPC pins are connected to the +5 VDC power supply on VME64x backplanes. These pins may also be used as additional +5 VDC power pins in boards that do not support live insertion.

M. Joos – Introduction to VMEbus 4 Why VMEbus? • (Complex) DAQ systems usually require custom built electronics modules which have to be: – Housed – Powered – Configured – Read out • VMEbus has traditionally been the technology of choice in many HEP experiments and accelerator control systems because it offers features such as:

VMEbus protocol • Some designers make mistakes and their VMEbus cards do not work at all or fail in combination with certain other cards • Debugging VMEbus traffic by S/W (printf(), gdb, etc.) is difficult or even impossible • A great help for fixing such problems are VMEbus analyzers

1999年9月19日 · The P2 64 User Defined I/O lines have provided VMEbus with the flexibility to meet a wide variety of application needs. They can be used for special signals, board input/output, or secondary bus implementation. When setting up a VMEbus system, the system developer needs to map out P2 use to make sure that application requirements are met.

The VME64x specification describes three connectors for VMEbus modules. These are called the P0/J0, P1/J1 and P2/J2. The 'P' and 'J' nomenclature refers to the PLUG (male) and JACK (female) connectors, which reside on the bus module (daughtercard) and backpanel respectively. Originally, all VMEbus products used a 96-pin DIN 41612 connector.

VMEbus has the largest software base of any computer architecture. That's quite a claim, but it is supported by the fact that there are over 103 known, commercial operating systems running on VMEbus. Other, proprietary operating systems are also known to …

2022年6月6日 · In order to allow both widths of buses to be used, VME uses two different Eurocard connectors, the P1 and P2. P1 contains three rows of 32 pins each, implementing the first 24-bits of the address and 16-bits of the data buses, along with all of the control signals.

Some VMEbus systems have a single PC board, called the J1 backplane. It provides the signal paths needed for basic operation. Other VMEbus systems also have an optional second PC board, called a J2 backplane. It provides the additional 96 pin connectors and signal paths needed for wider data and address transfers. Still others have.

2024年8月13日 · VMEbus（Versa Module Eurocard bus）是一种广泛应用于工业控制、军事、航空航天以及电信领域的模块化计算机总线标准。 VME背板是VME系统的核心组件之一，它不仅提供了物理支持和机械框架，还负责电气连接，使得多个模块能够通过标准化的接口进行通信。