MB86605 Datasheet | Fujitsu Semiconductor Limited

FUJITSU SEMICONDUCTOR DATA SHEET ASSP munication Control CMOS Wide SCSI-II Protocol Controller With PCI Interface DS04-22416-1E s DESCRIPTION The MB86605 is an intelligent SCSI Protocol Controller (SPC) which plies with ANSI (SCSI-2) standard and integrates a PCI local bus interface function. The specification of SCSI controller block is based on the MB86603 which is a wide SCSI-2 protocol controller with addition of some enhancements such as integration of PCI interface, enlarged “user program memory” (2 KBytes) and improvement of internal operation speed and performance. The MB86605 is capable of transferring up to 20 Mbyte/sec at the wide high speed synchronous mode. As for the SCSI bus pins, a totem pole type single-ended driver/receiver is incorporated in the device so that it can drive the SCSI bus directly. Furthermore, the MB86605 is capable of connecting the external differential type driver/receiver. The SCSI bus sequence is controlled by mands issued from a host system. So, it supports sequential mands that perform the phase-to-phase sequences to reduce the system overhead of sequence operations. As another key feature to reduce the system overhead, the device has a 2 Kbytes user program memory to store user program codes. Due to this, all the SCSI bus sequences including the data transfer can be performed automatically. As the system interface block, it incorporates a 32-bit PCI local bus interface which makes MB86605 an ideal “on-board PCI-SCSI controller” as well as a “host adapter” for PCs, servers and work stations. It also supports 16-bit separate MPU and DMA buses. For the on-chip PCI bus interface, the MB86605 also incorporates a 32bit DMA controller that is capable of supporting the scatter-gather function so that the data transfers can be controlled by both user program and the host system. The device is fabricated by the advanced CMOS process and is housed in an 144-pin plastic Low profile shrink Quad Flat Package (Suffix: -...