FEA TURES
• High-performance PCI
multifunction device
• Presents one electrical load
to PCI bus
• Frees up PC board space for
other functions
• Two independent wide Ultra2
SCSI channels support:
• Up to 80 MBps transfer rate
for each channel
• Wide range of signaling
environments
- Low Voltage Differential (LVD)
- High Voltage Differential (HVD)
- Single-ended (SE)
- Or any combination of
the above
• Integrated LVDIink SCSI
transceivers
• 8 KB SCRIPTS RAM on
each channel
• 944-byte DMA FIFO on
each channel
• Five general purpose I/O pins
for each SCSI channel
• 64-bit SCRIPTS™ addressing
SDMS software was designed using a modular approach for quick
development, validation and support for new OS versions as well as the
LSI53C896. To round out the SDMS solution, LSI Logic also provides
installation and configuration, non utilities, user documentation for each OS,
plus timely and knowledgeable technical support. For performance, SDMS
software takes advantage of the I/O processing capabilities of the
LSI53C896 to support target disconnect/reselect, synchronous and wide
SCSI operation and multiple host adapters. With operating systems like
Windows
® NT® and SCO Open Server, SDMS software supports one processor
interrupt per I/O.
Drivers are available for NetWare
®, Windows® NT® 4.0, DOS, Windows
95/98, UnixWare™, OS/2 Warp, Solaris™, and Linux.
LSI53CS96 BLOCK DIAGRAM AND APPLICA TION EXAMPLE
Figure 1 is a functional block diagram of the LSI53C896 controller.
LSI53C896 Ultra2 SCSI Controller
Figure 1. LSI53C896 functional block diagram
Host PCI Bus (64-bit, 33 MHz)
PCI Master and Slave Control Block, PCI Configuration Registers (2 sets)
and SCSI Channel Arbitration
8 Dword SCRIPTS
Prefetch Buffer
8 KB
SCRIPTS RAM
SCSI FIFO and SCSI Control Block
TolerANT and LVDlink
Wide Ultra2 SCSI Bus
(A Channel)
Wide Ultra2 SCSI Bus
(B Channel)
ROM/FLASH
Memory Bus
2-Wire Serial
EEPROM Bus
(one per channel)
Ultra2 SCSI
Controller
8 Dword SCRIPTS
Prefetch Buffer
8 KB
SCRIPTS RAM
SCSI FIFO and SCSI Control Block
TolerANT and LVDlink
Ultra2 SCSI
Controller
Local
Memory
Bus
JTAG
JTAG
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