Nexcom NSA 5130 User Manual page 105

Appendix C: Bypass Specifications
Power ON State Bypass Control Status Register F3
Bit Field Name
1:0 Segment Segment control bit mask. Each bit corresponds to a spe-
1 to 2 cific segment numbered 1 thru 3.
Write:
If a segment mask bit is set to false (0) no action on that
segment will take place.
If a segment mask bit has been set to true (1), action will
take place on this segment according to the bypass mode
settings in bits 7:6.
Read:
Upon read operations the bit mask returned indicates true
(1) for those segments which have been enabled and false
(0) for those segments which are disabled.
2-5 Not used No active taken if written, value is undetermined and not
needed on read operation.
7:6 Bypass These two bits defined the bypass mode for one or more
Mode segments. These bits are Write only and on reads returns
undetermined values which will be ignored by the driver.
Bit 7 Bit 6
0 0 Ignore, no action taken.
0 1 Force Enable - Engage bypass relays on segments enabled
in segment mask.
1 0 Force Disable - Disable bypass relays immediately on seg-
ments enabled in mask.
1 1 Timer Enable - Segments enabled in mask are under Timer
control.
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Value
Action
92
Power OFF state Bypass Control Status Register F7
Bit Field Name
0 Segment 1 0 = Set segment bypass disable when power off
1 = Set segment bypass enable when power off
1 Segment 2 0 = Set segment bypass disable when power off
1 = Set segment bypass enable when power off
2 Segment 3 0 = Set segment bypass disable when power off
1 = Set segment bypass enable when power off
3 Segment 4 0 = Set segment bypass disable when power off
1 = Set segment bypass enable when power off
7:4 Not used No active taken if written, value is undetermined and not
needed on read operation.
Value
NSA 5130 User Manual