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21555 Non-Transparent PCI-to-PCI Bridge User Manual 23
Signal Descriptions 3
This chapter presents the theory of operation information about the PCI signal interface. See Chapter 16 for specific
information about PCI registers. Table 5 describes the PCI signal groups, function, and provides a page reference.
Table 5. Signal Pin Functional Groups
Group by Signal Pin Description See Page
Primary Bus and
Extension interface
Signal Pins
All PCI pins required by the PCI Local
Bus Specification, Revision 2.2.
Section 3.1 on page 24
All PCI 64-bit extension pins required
by the PCI Local Bus Specification,
Revision 2.2.
Section 3.2 on page 26
Secondary Bus and
Extension Interface
Signal Pins
All PCI pins required by the PCI Local
Bus Specification, Revision 2.2.
Section 3.3 on page 28
All PCI 64-bit extension pins required
by the PCI Local Bus Specification,
Revision 2.2.
Section 3.4 on page 30
Miscellaneous Signal
Pins
Two input voltage signaling pins. Section 3.5 on page 31
Power Management, Hot-Swap, and
Reset Signals
Section 6.1 on page 65
Timing
Primary and Secondary PCI Bus
Clock Signals
Section 7.1 on page 77
Optional configuration
and expansion
memory.
Interface Signals Section 8.1 on page 81
SROM Interface Signals Section 9.1 on page 91
Arbitration Primary PCI Bus Arbitration Signals Section 10.1 on page 97
Interrupt
Primary and Secondary PCI Bus
Interrupt Signals
Section 11.1 on page 101
Error Error Signals Section 12.1 on page 105
Test Access Port JTAG Signals Section 13.1 on page 111