11
3.5.2 Pulse Configuration Registers
Pulse Repetition Interval Register (08) This read/write register controls the pulse repetition
interval and the state of the output relay. See Figure 6 for details.
08 PRI Register
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Write OEN Range Not Used PRI Multiplier
Read OEN Range Not Used PRI Multiplier
OEN Output Relay Enable (1 = enabled/output on)
Range PRI & Delay Range bit 14 13 12
0 0 0 25 ns
0 0 1 100 ns
0 1 0 1 s
0 1 1 10 s
1 0 0 100 s
1 0 1 1 ms
1 1 X invalid
PRI Multiplier PRI Multiplier (period = PRI Multiplier Range)
NOTES:
1) The Range field is used for both the PRI and Dela y time setting s.
2) The minimum programmable period is 100 nsec. Therefore the minim um PRI
Multiplier is 4 in the 25 nsec range, and 2 for all other ranges.
3) The maxim um PRI M ultiplier i s 1023; t herefore, the maximum pr ogrammable p eriod
is 1.023 sec.
4) For highest accuracy use the smallest range with a larger multiplier.
Figure 6. PRI Register