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 |