Digi SYNC/570i Synchronous Communications Controller

The Digi SYNC/570(i) Series Synchronous Communications Controllers are high-performance expansion boards for ISA or Micro Channel computers. The SYNC/570 adds two synchronous/asynchronous serial ports while the SYNW57Oi adds two or four synchronous/ asynchronous ports. They are designed for applications requiring cost-effective communications.

The Hitachi HD64570 Serial Communications Adapter WA) provides a highly-integrated advanced communications subsystem for the SYNC/570 and the SYNW57Oi. It further maximizes synchronous communications performance by using protocol-specific features to minimize driver overhead.

The onboard memory of both the SYNC/570 and the SYIW57Oi is directly addressable by both the system and the SCA's DMA. Program-initiated DMA transfers operate at DMA/memory speed independently of other system activity. This architecture provides low system overhead and high performance.

The optional OEM software lock ensures that OEM software will operate only with OEM-supplied boards.

The Digi SYNC/570i (and SYNC/570 optionally) includes Digi SurgeBlock, which is designed to protect the board and the computer in which it is installed against damage from data line surges.

Multiple SYNC/570 boards may share a common memory window. Micro Channel boards may also share a common interrupt request line. The two ports of the SYNC/570 each have a high density DB-15 connector to connect any device with an EIA-232-D interface to the user's computer. The board operates at line speeds from 4800 baud to over 115K.

The SYNC/570i communicates at Tl/El line speeds up to 5 Mbps. Each HI64570 chip supports two synchronous/asynchronous ports and four channels of DMA as well as interrupt and timer logic. Digi SYNC/570i has been manufactured with several interface options. Multiple SYNC/570i boards may share a common memory window. Micro Channel boards may also share a common interrupt request line