Fremont, California-based Cirrus Logic Inc claims to have the first single chip implementation of the SCSI-2 disk controller that implements the 10Mbyte-per-second data transfer rate. The company also has a new single-chip SCSI implementation. The CL-SH351 Integrated SCSI-2 Disk Controller provides a socket and firmware-compatible upgrade of Cirrus Logic’s current CL-SH350, and is intended primarily for the next generation of SCSI-2 disk drives that will be used in workstations, file servers and minicomputers. The CL-SH351 uses Cirrus Logic’s 56-bit error correction technology, on which a patent was granted last month. Samples of the CL-SH351 in a 100-lead quad flat pack will be available this month or next at $20 for 100-up with volume planned for next quarter. The CL-SH370 Integrated SCSI Disk Controller is claimed to contain the majority of the hardware needed for a complete SCSI controller subsystem, and is particularly aimed at small form factor 3.5 and 2.5 drives for small-footprint workstations and for laptop and notebook computers. It is claimed that the CL-SH370 enables designers to eliminate one of the two local microprocessors that have typically been required to control a disk drive, and with it a quantity of related circuitry. The CL-SH370 is sampling at $22 for 100-up; volume next quarter.
