MB86606A Datasheet, PDF (1/64 Pages) Fujitsu Component Limited. – FAST-20 SCSI Protocol Controller

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-22420-3E
ASSP Communication Control
CMOS
FAST-20 SCSI Protocol Controller
MB86606A
s DESCRIPTION
The MB86606A is an intelligent SCSI protocol controller (SPC) conforming to the ANSI (FAST-20) standard
and integrating a PCI local bus interface function. The specification of SCSI controller block is based on the
MB86605’s one which is a Wide SCSI protocol controller, but the device functions/features to achieve the
FAST-20 data transfer rate of maximum 40 Mbyte/sec at 16-bit FAST-20 SCSI, such as the size of internal data
register FIFO, are larged on the MB86606A. 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 MB86606A is
capable of connecting the external differential type driver/receiver.
The SCSI bus sequence is controlled by commands issued via the system interface. So, it supports sequential
commands that perform the phase-to-phase sequences to reduce the overhead of system’s sequence
operations.
As another key feature to reduce the system overhead, the device has a 2 Kbytes user program memory to store
the user program with the commands. 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 that easily realizes the SCSI
interface on the motherboards of PCI bus based PCs and WSs, in addition to a 16-bit separate MPU and DMA
buses. For the on-chip PCI bus interface, the MB86606A also incorporates a 32-bit 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 Quad Flat Package
(Suffix: -PMT2).
s PACKAGE
144 pin plastic LQFP
(FPT-144P-M08)