22
2 System Board
Devices on the ISA Bus
The following table shows how the switch and jumper settings, as described
in the section on page 13, affect the signals that are presented on the
general purpose I/O pins GPIO 10, 11, 14 and 15.
1.
Configuration not recommended. Shown for completeness only.
Backplane identification (desktop=1, minitower=0)
GPIO16
Serial EEPROM Data In
GPIO17
Serial EEPROM clock
GPIO20
Serial EEPROM Data Out
GPIO21
Serial EEPROM clear (as per SW1)
GPIO22
Ring signal (used for remote power-on, RPO)
GPIO23
XD bus bit 2
GPIO24
XD bus bit 3
GPIO25
XD bus bit 4
GPIO26
XD bus bit 5
GPIO27
Jumper J7
Processor
Local Bus
Frequency
GPIO
Switch
SW2
Frequency
Ratio
Processor
: Local Bus
GPIO
Processor
Frequency
10
11
1
2
14
15
short pins 2-4
50 MHz
1
0
Off
Off
1.5 : 1
1
1
75 MHz
short pins 1-3
60 MHz
0
1
Off
Off
1.5 : 1
1
1
90 MHz
short pins 3-4
66 MHz
1
1
Off
Off
1.5 : 1
1
1
100 MHz
short pins 2-4
50 MHz
1
0
On
Off
2 : 1
0
1
100 MHz
1
short pins 1-3
60 MHz
0
1
On
Off
2 : 1
0
1
120 MHz
short pins 2-4
50 MHz
1
0
On
On
2.5 : 1
0
0
125 MHz
1
short pins 3-4
66 MHz
1
1
On
Off
2 : 1
0
1
133 MHz
short pins 1-3
60 MHz
0
1
On
On
2.5 : 1
0
0
150 MHz
short pins 2-4
50 MHz
1
0
Off
On
3 : 1
1
0
150 MHz
1
short pins 3-4
66 MHz
1
1
On
On
2.5 : 1
0
0
166 MHz
short pins 1-3
60 MHz
0
1
Off
On
3 : 1
1
0
180 MHz
1
short pins 3-4
66 MHz
1
1
Off
On
3 : 1
1
0
200 MHz
Description
GPIO number
Содержание Vectra VE5 3
Страница 1: ...Technical Reference Manual Hardware and BIOS HP Vectra VE series 3 PC ...
Страница 8: ...Contents viii ...
Страница 16: ...8 1 System Overview Documentation ...
