Avago Technologies LSI53C320 - Manual (Page 19)

LSI53C320 Ultra320 SCSI Bus Expander Technical Manual 2-1
Version 2.2 Copyright © 2003 by LSI Logic Corporation. All rights reserved.
Chapter 2
Functional
Descriptions
This chapter describes all signals, their groupings, and their functions. It
includes these topics:
•
Section 2.1, “LSI53C320 Block Diagram Description,” page 2-1
•
Section 2.2, “Ultra320 SCSI Functional Description,” page 2-3
•
Section 2.3, “SCSI Signal Processing,” page 2-11
•
Section 2.4, “Internal Control Descriptions,” page 2-14
•
Section 2.5, “Serial EEPROM Connection,” page 2-15
2.1 LSI53C320 Block Diagram Description
The LSI53C320 has no user programmable registers and does not
require software. SCSI control signals control all LSI53C320 functions.
Figure 2.1 shows a block diagram of the LSI53C320 device, which
consists of these specific areas:
•
A Side SCSI Control Block
– LVD and SE Drivers and Receivers
•
B Side SCSI Control Block
– LVD and SE Drivers and Receivers
•
Retiming Logic
•
Precision Delay Control
•
State Machine Control