Chapter 3

 

 

Hardware

 

 

 

 

 

 

Pin #

Signal

Input/

Description

 

 

 

Output

 

 

106 (D16)

AD19

T/S

PCI Address and Data Bus Line 19 – Refer to Pin-3 for more

 

 

 

 

information.

 

107 (D17)

+3.3V

 

+3.3 volt power supply ±5%

 

108 (D18)

IDSEL2

 

Initialization Device Select 2 – Refer to Pin-18 for more

 

 

 

 

information.

 

109 (D19)

IDSEL3

 

Initialization Device Select 3 – Refer to Pin-18 for more

 

 

 

 

information.

 

110 (D20)

GND

 

Digital Ground

 

111 (D21)

AD27

T/S

PCI Address and Data Bus Line 27 – Refer to Pin-3 for more

 

 

 

 

information.

 

112 (D22)

AD31

T/S

PCI Address and Data Bus Line 31 – Refer to Pin-3 for more

 

 

 

 

information.

 

113 (D23)

VI/O

 

+5 volt power supply ±5%

 

114 (D24)

GNT0*

T/S

Grant 0 – Refer to Pin-25 for more information.

 

115 (D25)

GND

 

Digital Ground

 

116 (D26)

CLK1

In

PCI clock 1 – Refer to Pin-27 for more information

 

 

 

 

 

 

117 (D27)

GND

 

Digital Ground

 

118 (D28)

RST*

In

PCI bus reset – This signal is an output signal to reset the entire

 

 

 

 

PCI Bus. This signal will be asserted during system reset

 

119 (D29)

INTC*

O/D

Interrupt C – This signal is used to request interrupts only for

 

 

 

 

multi-function devices.

 

120 (D30)

GND

 

Digital Ground

 

 

 

 

 

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.

The Input/Output signals in this table refer to the input/output signals listed in the PCI Local Bus Manual, Revision 2.2, Chapter 2, paragraph 2.1, Signal definitions. The following terms or acronyms are used in this table:

In – Input is standard input only signal

Out – Totem Pole output is a standard active driver

T/S – Tri-State is a bi-directional input output pin

S/T/S – Sustained Tri-State is an active low tri-state signal driven by one and only one agent at a time

O/D – Open Drain allows multiple devices to share as a wire-OR.

ReadyBoard 700

Reference Manual

27

Page 33
Image 33
Ampro Corporation 700 manual IDSEL2, IDSEL3, GNT0, CLK1, Rst, Intc