Avago Technologies LSI53C120 - Manual (Page 19)

LSI53C120 Ultra SCSI Bus Expander 2-1
Chapter 2
Functional Description
This chapter describes all signals, their groupings and functions, and
includes these topics:
Section 2.1, “Interface Signal Descriptions,” page 2-1
Section 2.2, “SCSI Signal Descriptions,” page 2-4
2.1 Interface Signal Descriptions
The LSI53C120 has no programmable registers; therefore, no software
requirements. SCSI control signals control all LSI53C120 functions.
Figure 2.1 on page 2-2 is a diagram of the LSI53C120 device divided into
the following blocks:
•
SCSI A-Side and B-Side Single-Ended Control Blocks that contain
TolerANT
®
Drivers and Receivers
•
Re-timing Circuit
•
Precision Delay Control
•
State Machine Control
•
Differential Control