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Strobes
Event Mark In
(MKI)
PPS
a. The commands and logs shown in capital letters (for example, MARKCONTROL) are discussed in further detail in
the OEMStar Family Firmware Reference Manual.
I/O Line
Symbol
V
OL
PPS
V
OH
V
IL
MKI
V
IH
a. The above characteristics are applicable over the operating temperature range.
AG-Star User Manual Rev 4
Table 5: AG-Star Strobes
Default
Input/Output
Behavior
Dedicated
Input
pin
Leading edge
triggered
Dedicated
Output
pin
Table 6: AG-Star Input/Output Electrical Specifications
Minimum
Typical
(V)
2.3 V
2.0 V
Factory
Default
Active low
An input mark for which a pulse greater
than 150 ns triggers certain logs to be
generated. (Refer to the MARKPOS and
MARKTIME logs and ONMARK trigger.)
Polarity is configurable using the
MARKCONTROL command.
Active low
A time synchronization output. This is a
pulse where the leading edge is
synchronized to receiver-calculated GPS
Time. The polarity and period can be
configured using the PPSCONTROL
command.
Maximum
(V)
(V)
0.8 V
-4 mA
-8 mA
0.8 V
0.25 mA
0.30 mA
Comment
Current
Conditions
(mA)
With on-board I/O supply,
VDDIO=3.3V
a
a
45
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