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1PPS Output
The 1PPS output provides a timing pulse synchronized to GPS time once a valid fix is available.
The figure below shows the behavior of the 1PPS output signal after reset. For a period of 160μs after reset,
the 1PPS signal outputs the system clock. The actual 1PPS signal is activated at 500ms after reset.
Reset
ECLKOUT (1PPS)
Reset
ECLKOUT (1PPS)
Reset
ECLKOUT (1PPS)
1+
500ms
160µs
1+
1+
145ns
(6.90MHz)
1PPS signal output occurs 500ms after reset
Expansion
CPU clock exists for 160µs after reset
Expansion
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GXB5005
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