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The local memory consists of two high-speed dual-port RAM devices, that can be accessed by the onboard protocol controller and by a VMEbus master. The memory has a capacity of 2 kbytes, which is used to buffer up to four 512-byte data packets.
The COM9026 device provides the ARCNET network protocol handling. With its 2.5 Mbit/s data rate, up to 255 network nodes, and data packet sizes of up to 512 bytes, the ARCNET local area network is a reliable (token passing), high performance, and low-cost network solution for real-time industrial applications.
The HYC9088 is a hybrid module which interfaces the ARCNET local area network controller to telephone twisted pair, or coax cables.
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