Chapter 2 – Installation
2-9
Offset Registers
The following registers are located starting at the I/O location defined by register
234h.
Table 2- 11. I/O Port Selection (Port Address)
I/O port selection
Port address
00
180h
01
2E0h
10
3E0h
11
300h
Offset 0 Page Register for Programming (Port Address)
Offset 0 is a read-only register that checks the battery status
Table 2- 12. Offset 0 Page Register for Programming (Port Address)
Bit
Signal
Result
R/W
0
Battery status
0 = battery good
1 = battery fail
R
1
Reserved
0
R
2
Reserved
0
R
3
Reserved
0
R
4
Reserved
0
R
5
Reserved
0
R
6
Reserved
0
R
7
Reserved
0
R
