Avago Technologies LSI53C120 - Manual (Page 31)

LSI53C120 Ultra SCSI Bus Expander 3-1
Chapter 3
Specifications
This chapter provides technical specifications regarding the LSI53C120
Ultra SCSI Bus Expander and includes these topics:
•
Section 3.1, “Signal Descriptions,” page 3-1
•
Section 3.2, “Electrical Characteristics,” page 3-8
•
Section 3.3, “LSI53C120 Mechanical Drawing,” page 3-17
3.1 Signal Descriptions
The LSI53C120 is packaged in a 128-pin Plastic Quad Flat Pack (PQFP).
Detailed descriptions follow, grouped by function.The decoupling
capacitor arrangement shown below is recommended to maximize the
benefits of the internal split ground system. Capacitor values should be
between 0.01
µ
F and 0.1
µ
F.
3.1.1 LSI53C120 Pin Diagram
Figure 3.1 on page 3-2 shows the LSI53C120 128-pin Plastic Quad Flat
Pack (PQFP) pin diagram.