Avago Technologies LSI53C1020 - Manual (Page 29)

Block Diagram Description 2-3
Version 2.4 Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.
Figure 2.1 LSI53C1020 Block Diagram
2.1.1 Host Interface Module Description
The host interface module provides an interface between the host driver
and the SCSI channel. The host interface module controls system DMA
transfers and the host side of the Fusion-MPT architecture. It also
supports the external memory, serial EEPROM, and GPIO interfaces.
This subsection provides a detailed explanation of the host interface
submodules.
Ultra320 SCSI
Datapath Engine
Secondary Bus
SCSI Channel Module
Ultra320
SCSI
(ARM966E-S
Context Manager
Core
Shared
RAM
Timer, GPIO,
Serial GPIO
EEPROM
External
System Interface
DMA
Arbiter
and
Router
PCI/PCI-X
Interface
IOP
and EEPROM Memory
Host Interface Module
(ARM966E-S
PCI-X
PCI/
Flash ROM/
Primary Bus
NVSRAM
Bus to Bus
Bridge
Processor)
Processor)