The PCI20 inncorporates the newer COM20020 ARCNET controller chip with enhanced features over the earlier generation ARCNET chips. New performance and integration enhancements include command chaining operation and an internal 2K x 8 RAM buffer. There is no requirement for wait-state arbitration.

Each PCI20 module has two LEDs on the board. The green LED indicates that the module is transmitting data on the network and the yellow LED indicates bus access to the module. The PCI20 also has an external DIP switch so that node addresses can be easily reassigned without removing the module.

Several versions of the PCI20 ARCNET NIM exist. The PCI20-CXS supports coaxial star configurations requiring external active or passive hubs. The PCI20-CXB supports coaxial bus configuration usually requiring no hubs. Other models include the PCI20-FOG which supports fiber optic cable with either ST or SMA connectors. The PCI20-TB5 supports twisted-pair bus cabling using RJ-45 connectors. There are some versions that support EIA-485 communication each using RJ-45 and screw terminal connectors.

Features

• Utilizes COM20020 ARCNET controller
• Interfaces ARCNET with PCI bus computers
• Zero wait-state arbitration typical
• Software compatible with CC's COM20020-based series of network adapters for the ISA, PC/104 and PC Card bus systems
• Command chaining for enhanced performance
• Supports coaxial, fiber optic and twisted-pair cabling including EIA-485
• Node address switch selects one of 255 possible station addresses
• Automatic configuration of I/O and interrupt
• Plug and Play
• Jumperless configuration
• NDIS or null stack driver for Windows
• Variable data rates from 78 kbps to 5 Mbps
• Suitable with all the Contemporary Controls' MOD HUB and AI series active hubs
• CE Mark