GE VMIMPC-5790 PMC Dual Channel Ultra160 SCSI Host Adapter

GE VMIMPC-5790 PMC Dual Channel Ultra160 SCSI Host Adapter

Product Overview

Basic information: VMIMPC-5790 is a device based on LSI Symbios ®  The PMC dual channel Ultra160 SCSI host adapter of SYM53C1010 highly integrated PCI dual channel Ultra160 SCSI controller is suitable for embedded applications that require high throughput. It can maximize throughput while reducing transmission latency and host processor overhead. The host BIOS configures it as two independent Ultra160 SCSI channels.

Hardware features

64 bit, 33/66 MHz PCI interface, no external memory required.

Dual transition clock, with a throughput of up to 160 Mbyte/s per channel, supporting 64 bit addressing through dual address cycles (DACs).

Compliant with PCI 2.2, PCI Power Management 1.1, and PC99 standards, it has functions such as cyclic redundancy check (CRC), domain validation, and asynchronous information protection (AIP).

High performance PCI multifunctional device, presenting only one electrical load to the PCI bus, with two independent wide Ultra160 SCSI channels, equipped with SCSI Interrupt Steering Logic (SISL) backup interrupt routing, supporting Nextreme ™  RAID。

Operating System Support: Supports Windows NT and 95/98, Novell NetWare, Linux, Solaris, UnixWare, OS/2, and other operating systems.

Target applications: Storage Area Networks (SANs), server cluster environments, embedded RAID, low-cost PCI host adapters, host motherboards, etc.

Function Description

Core controller: using Symbios ®  The SYM53C1010 controller is fully compatible with the Ultra160 SCSI standard and supports multiple standards such as Fast SCSI, Ultra SCSI, Ultra2 SCSI, and Ultra160 SCSI. The dual transition clock enables a throughput of up to 160 Mbyte/s for each channel and a total throughput of 320 MBps, without the need to increase the interface clock frequency.

Data protection: Using the same CRC algorithm as FDDI, Ethernet, and Fiber Channel, it can detect various errors; AIP protects all non data stages and enhances the CRC function of Ultra160; SureLINK ™  Domain validation technology can detect SCSI bus configuration and automatically test and adjust transmission rates. The controller also has Margining (Level 3) domain validation function.

PCI Interface: Complies with PCI Local Bus Specification Revision 2.2, implements 64 bit/66 MHz PCI bus, backward compatible with 32-bit/33 MHz bus, is a true PCI multifunctional device, uses a REQ/- GNT/pair to arbitrate PCI bus master, generates separate interrupt signals for SCSI functions A and B, supports multiple power states and extended access cycles.

SCSI memory: Supports up to 1 Mbyte of external expansion ROM through parallel interfaces, supports local programming FLASH memory, and the serial 2-wire interface on each SCSI channel can be connected to external serial EEPROM for storing subsystem vendor IDs and subsystem IDs.

SCSI Processor: Provides two independent Ultra160 SCSI controllers on a single chip, integrated with LVDlink ™  Transceiver, supports LVD and single ended signals without the need for an external transceiver. The on-chip SCSI clock quadrupler enables the chip to achieve Ultra160 SCSI transfer rate at an input frequency of 40 MHz, with 8 Kbytes of internal RAM per channel for SCRIPTS ™  Instruction storage, 944 byte DMA FIFO can efficiently transmit data in bursts.

SCSI terminal: All SCSI buses require terminal networks at both ends. The host adapter uses UCC5630A terminal IC to automatically detect the SCSI bus and switch terminal modes. The device type is determined based on the type of device connected to the bus, and the device type is identified through the DIFSENS signal line. Header E1 pins 3 and 4 enable automatic terminal function.

Media connection: Supports dual 68 pin VHDCI external connectors.

Software Drivers: To optimize the performance of PCI based adapter cards, provide software drivers compatible with the Windows NT operating system, which can be obtained through the VMIC website or by contacting customer service for drivers not available on the website.

Reference List

For detailed instructions on the PCI local bus, please refer to the PCI local bus specification and obtain it from the PCI Special Interest Group.

For detailed instructions on SCSI, please refer to the fourth edition of Basics of SCSI and obtain it from Ancot Corporation.

For a detailed explanation of the SYM5301010 dual channel Ultra3 SCSI controller, please refer to the relevant documentation and obtain it from LSI Logic Corp.

For detailed instructions on the UNITRODE UCC5630A multi-mode SCSI 9-wire terminator, please refer to the relevant data manual obtained from UNITRODE Corporation.

The physical description and specifications can be found in the product specification document, which can be obtained from VMIC.

Security Summary

To minimize the risk of electric shock, the chassis and system cabinets must be connected to electrical grounding, using three core AC power cords, and correctly connected to grounding sockets.

Do not operate the system in an explosive atmosphere to avoid creating a safety hazard.

Operators are not allowed to remove the product casing. Component replacement and internal adjustment must be carried out by qualified maintenance personnel. When replacing components, do not connect the power cord. Even if the power cord is removed, there may still be dangerous voltage in some situations. Before contacting the circuit, the power supply must be disconnected and discharged.