Motorola MVME-327A总线适配器 

1.产 品 资 料 介 绍：

Motorola MVME-327A VMEbus 总线适配器解析

一、核心技术特性

1. VME 总线全兼容与协议适配

• 多版本总线支持：完全兼容 VMEbus 标准（包括传统 32 位 VME、VME64 扩展标准），可适配不同世代的 VME 模块：
  • 支持 16 位 / 32 位 / 64 位数据传输模式自动切换，解决早期 32 位处理器板（如 MVME162）与新一代 64 位 I/O 模块的总线带宽不匹配问题；
  • 兼容 VME 主模块（如 MVME2301 控制器）的地址映射、中断响应与 DMA 传输协议，确保主从模块间指令与数据交互无协议障碍，避免总线冲突。
• 总线信号调理：内置信号整形与驱动电路，补偿 VME 背板长距离传输导致的信号衰减（尤其适配多槽位机箱），提升总线传输速率（最高支持 VME64 标准的 80MB/s 峰值带宽），保障大容量数据（如工业相机图像、雷达探测数据）传输的实时性。

2. 电气隔离与抗干扰设计

• 光电隔离保护：关键总线通道集成光电隔离电路（隔离电压≥2500Vrms），阻断 VME 系统中不同模块间的共地干扰（如工业电机启停的浪涌电流、电力设备强磁场辐射），避免高电压 / 大电流冲击损坏核心处理器模块（如 MVME167 单板机）；
• 电磁兼容优化：电路设计符合 IEC 61000-4 标准（抗静电、抗射频干扰），板载 EMI 滤波组件，减少适配器自身对总线信号的干扰，同时抵御外部复杂电磁环境（如车间变频器、车载电台）对总线通信的影响，降低数据传输误码率。

Motorola MVME 172-263以太网模块英文资料：

Analysis of Motorola MVME-327A VMEbus Adapter

Motorola MVME-327A is an industrial grade bus adapter designed specifically for VME bus systems. Its core positioning is "the signal adaptation and protocol conversion hub between VME master and slave modules" - by solving the bus compatibility, signal integrity, and electrical isolation problems between different VME modules (such as processor boards, I/O modules, and communication modules), it achieves efficient collaboration among multiple modules and expands the interface adaptation capability of VME systems. It is a key component in ensuring stable bus communication in complex VME architecture systems such as industrial automation, power energy, and national defense.

1、 Core technical characteristics

1. VME bus full compatibility and protocol adaptation

Multi version bus support: fully compatible with the VMEbus standard (including traditional 32-bit VME and VME64 expansion standards), adaptable to different generations of VME modules:

Support automatic switching between 16 bit/32-bit/64 bit data transfer modes, solving the problem of mismatched bus bandwidth between early 32-bit processor boards (such as MVME162) and the new generation of 64 bit I/O modules;

Compatible with the address mapping, interrupt response, and DMA transfer protocol of VME master modules (such as MVME2301 controller), ensuring no protocol barriers in instruction and data exchange between master and slave modules, and avoiding bus conflicts.

Bus signal conditioning: Built in signal shaping and driving circuits, compensating for signal attenuation caused by long-distance transmission of VME backboards (especially suitable for multi slot chassis), improving bus transmission speed (supporting up to 80MB/s peak bandwidth of VME64 standard), and ensuring real-time transmission of large capacity data (such as industrial camera images and radar detection data).

2. Electrical isolation and anti-interference design

Optoelectronic isolation protection: Key bus channels are integrated with optoelectronic isolation circuits (isolation voltage ≥ 2500Vrms) to block common ground interference between different modules in the VME system (such as surge currents from industrial motor start stop and strong magnetic field radiation from power equipment), avoiding high voltage/high current impact damage to core processor modules (such as MVME167 single board computer);

Electromagnetic compatibility optimization: The circuit design complies with the IEC 61000-4 standard (anti-static, anti radio frequency interference), and the onboard EMI filtering component reduces the interference of the adapter itself on the bus signal, while resisting the influence of external complex electromagnetic environments (such as workshop frequency converters and car radios) on bus communication, reducing data transmission error rates.

Motorola MVME 172-263以太网模块产      品      展      示      

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3.其他产品

SIEMENS 6RA8098-4DS22-0AA0电源模块
UE LDP1WC/250P-16精度传感器
GEA 0005-4050-430数字控制面板

4.其他英文产品

TRICONEX 2301 base module
TRICONEX 2351 base module
TRICONEX 2401 base card

The content is from Ruichang Mingsheng Automation Equipment Co., LTD

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