Decision Computer International Watch dog 1, Руководство по эксплуатации, Страница: 7 / 62

Operations Manual Watch dog timer card
DECISION Computer International
7
CHAPTER 4
H
H
A
A
R
R
D
D
W
W
A
A
R
R
E
E
C
C
O
O
N
N
F
F
I
I
G
G
U
U
R
R
A
A
T
T
I
I
O
O
N
N
4.1 Jumper Settings
Be sure to set correct I/O address and refresh timer, then connect
JP3 and JP4 to reset signal of main board and reset push button. The
jumper settings are:
1. JP1 (I/O address selection)
ADDRESS SPECIFICATION
Base + 00H Enable or Refresh Watch Dog (READ)
Base + 01H Disable Watch Dog (READ)
Base + 01H Turn ON/OFF power control box (WRITE)
The JP1 is used to select I/O address, Each JP contains A11 to A1
jumper pins. The A11 to A1 are used to set I/O port address, when
the corresponding pin is short means 0, otherwise no pin short
means 1. The base address of above is BBCH. It is easily to read the
corresponding address to trigger the enable (refresh) or disable
watch dog adapter. To turn OFF power control box, just write “1” to
(Base + 01H), to turn ON power control box, write “0” to (Base +
01H).