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AG-STAR User Manual Rev 2 44
Table 5: AG-STAR Strobes
Table 6: AG-STAR Input/Output Electrical Specifications
Strobes
Default
Behavior
Input/Output
Factory
Default
Comment
a
a. The commands and logs shown in capital letters (for example, MARKCONTROL) are discussed in further detail
in the OEMStar Family Firmware Reference Manual.
Event Mark In
(MKI)
Dedicated
pin
Input
Leading edge
triggered
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.
PPS Dedicated
pin
Output 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.
I/O Line Sym
Mininum
(V)
Typical
(V)
Maximum
(V)
Current
(mA)
Conditions
a
a. The above characteristics are applicable over the operating temperature range.
PPS
V
OL
0.8 V -4 mA
With on-board I/O supply,
VDDIO=3.3V
V
OH
2.3 V -8 mA
MKI
V
IL
0.8 V 0.25 mA
V
IH
2.0 V 0.30 mA