Avago Technologies LSI53C876E - Manual (Page 17)

1-3
Figure 1.2 Typical LSI53C876 Board Application
The LSI53C876 integrates a high-performance SCSI core, a PCI bus
master DMA core, and the LSI Logic SCSI SCRIPTS processor to meet
the flexibility requirements of SCSI, Fast SCSI, and Wide Ultra SCSI
standards. It is designed to implement multithreaded I/O algorithms with
a minimum of processor intervention, solving the protocol overhead
problems of previous intelligent and nonintelligent controller designs.
The LSI53C876 is fully supported by the LSI Logic Storage Device
Management System (SDMS™), a software package that supports the
Advanced SCSI Protocol Interface (ASPI). SDMS software provides
BIOS and driver support for hard disk, tape, removable media products,
and CD-ROM under the major PC operating systems.
In addition, LSI Logic provides a SYMplicity™ I
2
O Hardware Device
Module for the LSI53C876 to support the device in I
2
O-ready systems.
The SYMplicity I
2
O architecture is compliant with the I
2
O specification.
I
2
O is a split driver architecture that increases system efficiency by
transferring I/O intensive processing tasks from the host CPU to
intelligent peripheral platforms.
Flash EEPROM
Serial EEPROM
Function A
Serial EEPROM
Function B
Memory Control
Block
LSI53C876
PCI
to
Dual Channel SCSI
Multifunction
Function A
68 Pin
Wide SCSI
Connector
SCSI Data,
Parity, and
Control Signals
Function B
68 Pin
Wide SCSI
Connector
SCSI Data,
Parity, and
Control Signals
PCI Interface
PCI Address, Data, Parity and Control Signals
Memory
Address/Data
Bus
A_GPIO/[1:0]
B_GPIO/[1:0]
Controller