Chapter 3

Hardware

Pin #

Signal

Input/

Description

 

 

Output

 

74 (C14)

+3.3V

 

+3.3 volts ±5% power supply

75 (C15)

AD17

T/S

PCI Address and Data Bus Line 17 – Refer to Pin 3 for more

 

 

 

information.

76 (C16)

GND

 

Ground

77 (C17)

AD22

T/S

PCI Address and Data Bus Line 22 – Refer to Pin 3 for more

 

 

 

information.

78 (C18)

IDSEL1

 

Initialization Device Select 1 – Refer to Pin 18 for more

 

 

 

information

79 (C19)

VI/O

NC

(+5V) Not connected

80 (C20)

AD25

T/S

PCI Address and Data Bus Line 25 – Refer to Pin 3 for more

 

 

 

information.

81 (C21)

AD28

T/S

PCI Address and Data Bus Line 28 – Refer to Pin 3 for more

 

 

 

information.

82 (C22)

GND

 

Ground

83 (C23)

REQ1*

T/S

Bus Request 1 – Refer to Pin 23 for more information.

 

 

 

 

84 (C24)

+5V

 

+5 volts ±5% power supply

85 (C25)

GNT2*

T/S

Grant 2 – Refer to Pin 25 for more information

 

 

 

 

86 (C26)

GND

 

Ground

87 (C27)

CLK3

In

PCI clock 3 – Refer to Pin 27 for more information

 

 

 

 

88 (C28)

+5V

 

+5 volts ±5% power supply

89 (C29)

INTB*

O/D

Interrupt B – This signal is used to request interrupts only for multi-

 

 

 

function devices.

90 (C30)

PME*

 

Power Management Event – This signal is used for power

 

 

 

management events

91 (D1)

AD00

T/S

PCI Address and Data Bus Line 0 – Refer to Pin 3 for more

 

 

 

information.

92 (D2)

+5V

 

+5 volts ±5% power supply

93 (D3)

AD03

T/S

PCI Address and Data Bus Lines 3 – Refer to Pin 3 for more

 

 

 

information.

94 (D4)

AD06

T/S

PCI Address and Data Bus Lines 6 – Refer to Pin 3 for more

 

 

 

information.

95 (D5)

GND

 

Ground

96 (D6)

GND

 

Ground

97 (D7)

AD12

T/S

PCI Address and Data Bus Line 12 – Refer to Pin 3 for more

 

 

 

information.

98 (D8)

+3.3V

 

+3.3 volts ±5% power supply

99 (D9)

PAR

T/S

PCI bus Parity bit – This signal is the even parity bit on AD[31:0]

 

 

 

and C/BE[3:0]*

100 (D10)

NC

NC

Not connected (Snoop Done)

 

 

 

 

101 (D11)

GND

 

Ground

102 (D12)

Devsel*

S/T/S

Device Select – This signal is driven by the target device when its

 

 

 

address is decoded.

28

Reference Manual

LittleBoard 550

Page 34
Image 34
Ampro Corporation Littleboard 550 manual IDSEL1, REQ1, GNT2, CLK3, Intb, Pme, Par