PT-5IH
SYSTEM BOARD
HARDWARE SETUP
(B) JP11-JP16, JP19 CPU operating voltage selection
Note
: (1).
For the detailed CPU-VCC requirement, please inquire of your CPU supplier.
(2).
In PT-5IH VER.. 1.2 & VER. 1.3 , the JP19 is inexistent, you could skip it.
CPU VCC
I/O
CORE
JP11
JP12
JP13
JP14
JP15
JP16
JP19
Remark
voltage
voltage
+ 3.3 V
+ 3.3 V
2-3
2-3
short
open
open
x
2-3
+ 3.4 V
+ 3.4 V
2-3
2-3
open
short
open
x
2-3
*
+ 3.5 V
+ 3.5 V
2-3
2-3
open
open
short
x
2-3
+ 3.3 V
+ 2.5 V
1-2
1-2
short
open
open
1-2
1-2
+ 3.4 V
+ 2.5 V
1-2
1-2
open
short
open
1-2
1-2
**
+ 3.5 V
+ 2.5 V
1-2
1-2
open
open
short
1-2
1-2
+ 3.3 V
+ 2.8 V
1-2
1-2
short
open
open
2-3
1-2
+ 3.4 V
+ 2.8 V
1-2
1-2
open
short
open
2-3
1-2
***
+ 3.5 V
+ 2.8 V
1-2
1-2
open
open
short
2-3
1-2
Remark :
x
: Don't care
*
: For the single-VCC required CPUs. (e.g. Intel P54C, Cyrix 6x86, AMD-SSA/5-xxAB?,
AMD-SSA/5-xxAC?, AMD-SSA/5-xxAF? ... etc.)
**
: For a part of the dual-VCC required CPUs.
(e.g. Intel P55C-166, Cyrix M2, AMD-SSA/5-xxAK? ... etc.)
*** : For a part of the dual-VCC required CPUs.
(e.g. Intel P55C-200, Cyrix M2, AMD-SSA/5-xxAH?, AMD-SSA/5-xxAJ? ... etc.)
(C) JP17
ROM BIOS Selection
Pin #
Function
1-2
For +5V FLASH ROM, EPROM
2-3
For +12V FLASH ROM
(D) JP18
Clear CMOS button
Pin #
Function
open
Normal operation
short
Clear CMOS (
Note : Don't forget to open this jumper after 2-3 seconds
)
Note : Depends on different brand-name of RTC IC (U27 or U28), there are two times
to clear CMOS, the following is a list for reference :
(1)
while power-on : BENCHMARQ / bq3287AMT, SGS / M48T86,
(2)
while power-off : VIA / VT82885N, ODIN / OEC12C885 / OEC12C887A,
DALLAS / DS12887A.
(E) JP1-JP5
(Reserved)
4-8
