u-blox ZED-F9P Interface Description - Manual
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CFG-TP-* Configuration Items continued
Configuration Item
Key ID
Type
Scale
Unit
Description
CFG-TP-USE_LOCKED_TP1
0x10050009
L
-
-
Use locked parameters when possible
(TP1)
If set, ues CFG-TP-PERIOD_LOCK_TP1 and CFG-TP-LEN_LOCK_TP1 as soon as GNSS time is valid, otherwise if
not valid or not set, use CFG-TP-PERIOD_TP1 and CFG-TP-LEN_TP1.
CFG-TP-ALIGN_TO_TOW_TP1
0x1005000a
L
-
-
Align time pulse to top of second
(TP1)
To use this feature, CFG-TP-USE_LOCKED_TP1 must be set.
Time pulse period must be an integer fraction of 1 second.
Ignored in time-frequency product varients,where it is assumed always enabled. Set maxSlewRate and
maxPhaseCorrRate fields of UBX-CFG-SMGR to 0 to disable alignment.
CFG-TP-POL_TP1
0x1005000b
L
-
-
Set time pulse polarity (TP1)
false (0) : falling edge at top of second.
true (1) : rising edge at top of second.
CFG-TP-TIMEGRID_TP1
0x2005000c
E1
-
-
Time grid to use (TP1)
Only relevent if CFG-TP-USE_LOCKED_TP1 and ALIGN_TO_TOW_TP1 are set.
Note that configured GNSS time is estimated by the receiver if locked to any GNSS system. If the receiver has a
valid GNSS fix it will attempt to steer the TP to the specified time grid even if the specified time is not based on
information from the constellation's satellites. To ensure timing based purely on a given GNSS, restrict the
supported constellations in UBX-CFG-GNSS.
See
Constants for CFG-TP-TIMEGRID_TP1
below for a list of possible constants for this item.
Constants for CFG-TP-PULSE_DEF
Constant
Value
Description
PERIOD
0
Time pulse period [us]
FREQ
1
Time pulse frequency [Hz]
Constants for CFG-TP-PULSE_LENGTH_DEF
Constant
Value
Description
RATIO
0
Time pulse ratio
LENGTH
1
Time pulse length
Constants for CFG-TP-TIMEGRID_TP1
Constant
Value
Description
UTC
0
UTC time reference
GPS
1
GPS time reference
GLO
2
GLONASS time reference
BDS
3
BeiDuo time reference
GAL
4
Galileo time reference
6.7.23 CFG-TXREADY: Tx-Ready Configuration
Configuration of the tx ready pin.
CFG-TXREADY-* Configuration Items
Configuration Item
Key ID
Type Scale
Unit
Description
CFG-TXREADY-ENABLED
0x10a20001
L
-
-
Flag to indicate if tx ready pin
mechanism should be enabled
UBX-18010854 - R04
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