All field in TOD format contain the time-of-day clock value and
are set automatically from the system when a replace or insert request
is issued. This data is represented in a binary counter corresponding
to a 64-bits unsigned integer and its value is implemented every 2-12
microseconds (clock unit) starting from 1st January 1900 with the
cycle of the clock of approximately 143 years. In order to understand
better the content of this field, please refer to the two tables below:
Table 1. Clock value setting at the start of
different years
YEAR
CLOCK SETTNG (HEX NOTATION)
1900
0000
0000
0000
0000
1976
8853
BAF0
B400
0000
1980
8F80
9FD3
2200
0000
1984
96AD
84B5
9000
0000
1988
9DDA
6997
FE00
0000
1992
A507
4E7A
6C00
0000
1996
AC34
335C
DA00
0000
2000
B361
183F
4800
0000
Table 2. Clock value setting at different time
interval
INTERVAL
CLOCK UNIT (HEX ROTATION)
1 microsec.
1000
1 millisec.
3E
8000
1 second
F424
0000
1 minute
39
3870
0000
1 hour
D69
3A40
0000
1 day
1
41DD
7600
0000
365 days
1CA
E8C1
3E00
0000
366 days
1CC
2A9E
B400
0000
1.461 days (*)
72C
E4E2
6E00
1000
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