CXD1185CQ

CXD1185CQ/CR SCSI 1 Protocol Controller For the availability of this product, please contact the sales office. Description The CXD1185C is a high performance CMOS SCSI controller LSI that conforms to ANSIX3. 1311986 standards. The CXD1185C is capable of operating in both initiator and target modes. It satisfies all standard SCSI bus features, such as arbitration, selection and parity generation/check functions. A 24-bit data transfer byte counter and 16-byte FIFO are built into the hardware. Two separate buses for data and processor makes high speed data transfer possible. 48 mA (sinking) port is built-in to achieve reduction in the number of external components. The chip offers a set of high level commands at SCSI phase level. It is also possible to read/write all individual SCSI signals. The combination of the above two makes programs simpler and at the same time improves programmability. Features Satisfies all SCSI bus features, including arbitration, selection, parity generation/check and synchronous data transfer. Maximum synchronous data transfer rate of 4.0 MB/s and maximum asynchronous data transfer rate of 2.5 MB/s. Provides two separate ports for the data bus and the CPU bus. Built-in user-programmable timer for selection /reselection time-out operation. Supports 8-bit microcomputer bus. Support programmed I/O and DMA transfer. Built-in 48 mA (sinking) SCSI port. The SCSI port can be used as either single-ended port or differential port. Built-in 24-...