DESCRIPTION
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 commands issued from a host system. So, it supports sequential commands 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...
Fujitsu
