LSI LSI53C1000, Техническое руководство

Страница: 93 / 384

LSI53C1000 PCI to Ultra160 SCSI Controller 3-1
Chapter 3
Signal Descriptions
This chapter describes the input and output signals of the LSI53C1000.
The chapter consists of the following sections:
•
Section 3.1, “Signal Organization”
•
Section 3.2, “Internal Pull-ups and Pull-downs on LSI53C1000
Signals”
•
Section 3.3, “PCI Bus Interface Signals”
•
Section 3.4, “SCSI Bus Interface Signals”
•
Section 3.5, “General Purpose I/O (GPIO) Signals”
•
Section 3.6, “Flash ROM and Memory Interface Signals”
•
Section 3.7, “Test Interface Signals”
•
Section 3.8, “Power and Ground Signals”
•
Section 3.9, “MAD Bus Programming”
3.1 Signal Organization
The LSI53C1000 has five major interfaces:
•
PCI Interface
•
SCSI Bus Interface
•
General Purpose I/O (GPIO) Interface
•
Memory Interface
•
Test Interface
Figure 3.1 illustrates the signals, their grouping, and their I/O direction. A
slash (/) at the end of a signal name indicates that it is an active LOW
signal. When the slash is absent, the signal is active at a HIGH voltage.