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Multichannel Adapter Sigma-800
Discontinued, recommended replacement is: Tau-PCI
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Features:
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The Sigma-800 is a middle speed (up to 128 kbps) synchronous/asynchronous
adapter intended for use with IBM PC and compatible computers.
Sigma-800 adapter is based on the CL-CD2431 controller chip (a product of Cirrus Logic Corp., USA). It supports master mode DMA data transfer providing the most efficient use of the PC input/output bus. All eight serial ports are equipped with RS-232 interfaces. The adapter is software-configurable. Only I/O Base Address is jumper selectable.
The Cronyx-Sigma software allows to join several physical synchronous communication channels into one logical channel. For example, two channels with data rate 128 kbps, joined together, will create the logical channel with the overall throughput of 256 kbps.
A pair of Sigma-800 boards can be "daisy chained" to the same DMA channel and interrupt level by a short flat cable. This allows to install up to 6 multiplexers for a computer with up to 48 synchronous/asynchronous serial channels in total. Specifications
| PC Bus Interface: | |
|---|---|
| Bus Type | ISA, 16 bit |
| I/O Base Address | 200h - 3e0h, Jumper Selectable |
| I/O Address Space | 32 Bytes |
| Interrupts | IRQ 3, 5, 7, 10, 11, 12, 15, Software Selectable |
| DMA Channels | DMA 5, 6, 7, Software Selectable |
| DMA Transfers | Master Mode, Word Bursts |
| Addressable Memory | 16 Mbytes |
| Serial Interfaces: | |
| Interface Type | RS-232 |
| Maximum Data Transfer Rate | 128 kbps |
| Internal Bit Rate Generators | Independent per channel per direction |
| Synchronous Protocol | HDLC |
| Asynchronous Transfer | 5-8 Bits/Character, 1/1.5/2 Stop Bits, Parity Bit |
| Sync Mode Error Detection | Cyclic Redundancy Check CRC-16, CRC V.41 |
| Async Mode Error Detection | Parity bit |
| Clock Options | TXCIN, RXCIN, TXCOUT or DPLL, Software selectable per channel |
| Modem Control Signals | DTR, DSR, CTS, RTS, CD |
| Board Size | Height: 97 mm, Width: 170 mm |
| Operating Systems and Protocols | |
| Windows NT/2000 | PPP |
| FreeBSD 4.x, 5.x, 6.x (FreeBSD 7.x is not supported) |
PPP, Cisco/HDLC, Frame Relay |
| Linux | PPP, Cisco/HDLC, Frame Relay |
User's Manual in Russian
Driver Development Kit Manual in Russian
Справочник по интерфейсным кабелям Cronyx.
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