Storage controller card PMCSCU2a

PCI busSCSI

Uses 53C895A Wide Ultra 2 SCSI LSI Logic SCSI controller with extra large 944 byte FIFO, up to 80MB/sec, supports wide and narrow SCSI, auto detection of LVD or single ended SCSI, active SCSI termination, drives up to 12m cable, Flash BIOS support. See Accessories for rear I/O PIM modules and carriers. Key Features Performs SCSI data transfers up to 80Mbytes/sec, synchronous operation on a wide LVD SCSI bus. Transfers SCSI data synchronously up to Ultra SCSI speeds in single-ended mode. Allows total SCSI cable lengths up to 12m (longer cables may be possible in point-to-point solutions). Supports up to 15 peripheral LVD SCSI devices on the wide bus. Extra large 816byte DMA FIFO for improved bus-to-bus speed matching. Accommodates extra data while data bursting is occurring. Provides better support for large block size transfers at Ultra2 SCSI speeds. Allows the chip to handle a full disc sector. Supports up to 512byte bursts across the PCI bus. 31 levels of SCSI Synchronous Offset. Increases the pace of synchronous transfers to match Ultra2 SCSI transfer speed. PCI Features Connects directly as one load to the PCI bus. 816byte DMA FIFO for improved speed matching. Functions as full 32-bit PCI DMA Bus Master. Complies with PCI 2.1 Specification. Supports 33MHz PCI Bus zero wait state operation. Supports maximum burst transfer rate of 132MBytes/sec. Supports PCI extended access cycles. SCSI Features Includes 4Kbytes of internal RAM for SCSI SCRIPTS™ instruction storage, to reduce or eliminate instruction fetches over the PCI bus. Pre-fetches up to 8 dwords of SCSI SCRIPTS instructions, reducing PCI bus overhead.