128-Port Asynchronous Controller, PCI bus

Model: 2944

IBM 128-Port Asynchronous Controller - Serial adapter - PCI - RS-232, RS-422 - 128 ports

The 128-port Async feature (F/C 2944) provides the RS/6000 SP with up to 128 EIA-232 asynchronous serial lines from a single PCI bus slot. This adapter adheres to the Peripheral Component Interconnect PCI standard. It features a low cost, high performance 32-bit card, 33 MHz bus speed, and a PCI bus transfer rate of 132 Mbps. Two 2.4 Mbps synchronous channels link the adapter to a maximum of eight 16-port remote async nodes (RANs). Each synchronous channel uses an HD-15 female connector to link up to four RANs. Each RAN supports either EIA-232 or RS-422 connections (sixteen per RAN) and up to eight RANs may be connected together yielding a total of 128 ports. The RAN utilizes an RJ-45 connector to provide interface signals at speeds up to 230K baud at a limited number of ports.

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