The IOI-5201U3W is a highly integrated Dual-Channel Wide Ultra160 SCSI to 64-bit 66 MHz PCI host adapter . It is backward compatible with 32-bit/33 MHz buses. Additionally, support for DAC is provided.
The IOI-5201U3W is a true PCI multifunction device in that it presents one electrical load to the PCI bus. It uses one REQ/-GNT/pair to arbitrate for PCI bus mastership, and separate interrupt signals are generated for SCSI Function A and SCSI Function B for maximum performance.
The IOI-5201U3W complies with PCI Power Management Interface Specification Revision 1.1 and PC 99, supporting power states D0, D1, D2, D3hot and D3cold, power management capabilities registers, and program-mable values for PCI Subsystem Vendor ID and Subsystem ID. Extended access cycles (Memory Read Line, Memory Read Multiple, and Memory Write and Invalidate) are also supported.
The IOI-5201U3W also fits into 32-bit PCI slots. This compatible feature enables users to qualify a single adapter for all server and workstation platforms regardless of the PCI architecture data path size.
The IOI-5201U3W provides two independent Ultra160 SCSI controllers on a single adapter. Each controller supports wide Ultra160 SCSI synchronous transfer rates up to 160 MBps on a LVD SCSI bus. Integrated LVDlink transceivers support both LVD and single-ended signals with no external transceivers
required. Fast SCSI, Ultra SCSI, Ultra2 SCSI, and Ultra160 SCSI are all supported by the IOI-5201U3W.
IOI-5201U3W delivers maximum I/O throughput for demanding professional applications and high-performance peripherals. It is ideal for high-end Workstation and network servers. It takes full advantage of high-speed PCI Bus and Wide Ultra160 SCSI Bus allowing for multi-user and multitasking performance.
The Bus Master DMA core is tightly coupled to the SCSI core through the SCRIPTS processor, which supports uninterrupted Scatter/Gather memory operations. The 8 KB of internal RAM per channel for SCRIPTS instruction storage allow all accesses to remain internal, reducing the time spent on the PCI bus. A 944-byte DMA FIFO on each channel allows the device to efficiently burst up to 512 bytes across the PCI bus. SCSI bus phase mismatches are handled in SCRIPTS, reducing CPU utilization.
The IOI-5201U3W is supported with the proven SDMS software. SDMS software enables the performance enhancements of Ultra160 data transfer speed increases and improved PCI bus utilization capabilities included in the IOI-5201U3W .
The IOI-5201U3W reliability capabilities of AIP and CRC are enabled and managed by the SDMS software. SDMS software implements the manageability improvements of the LSI Logic SureLINK domain validation technology. SureLINK technology extends standard domain validation with the addition of full cable plant margining. The cable plant margining capability, exclusive to LSI Logicís Ultra160 solution, includes end-to-end margining from the IOI-5201U3W through LSI Logicís LSI53C180 SCSI bus expander to the target device. The domain validation capability of SDMS software is available as an independent application as well as integrated in the DMI 2.0 based system management solution for enterprise class implementations. SDMS software includes BIOS and OSV certified drivers for all major operating systems including DOS with ASPI support, Windows 95/98, Windows NT/2000, UnixWare, OS/2, NetWare, Solaris and Linux. A complete set of SCSI utilities rounds out the software solution, which includes a DMI 2.0 based system management software for Windows NT, NetWare, UnixWare, Solaris and Linux, and a stand-alone or snap-in DMI browser applet and SureLINK applet.
Longer Cables and Better Connectivity
Each Ultra3 SCSI cannel on IOI-5201U3W can support up to 15 devices on a 12 meter long cable. In a point-to-pint configuration, cabling can be extended up to 25 meters. Increasing the cable length provides flexibility in system configuration.