UNICORECOMM UM982 - 4 Production Requirement

UM982 User Manual
10 Hardware UC-00-M31 EN P1.0.0
No.
Pin
I/O
Description
cannot connect ground or power supply, and
cannot be peripheral I/O or floating
26
BIF
—
Built-in function; recommended to add a through-
hole testing point and a 10 kΩ pull-up resistor;
cannot connect ground or power supply, and
cannot be peripheral I/O or floating
27
TXD3
O
COM3 transmitting data, LVTTL level,
can be used as CAN TXD
28
RXD3
I
COM3 receiving data, LVTTL level,
can be used as CAN RXD
29
RSV
—
Reserved, floating
30
PPS
O
Pulse per second
31
RSV
—
Reserved, floating
32
EVENT
I
Event mark
33
RESET_N
I
System reset, active low
34
GND
—
Ground
35
GND
—
Ground
36
ANT2_IN
I
GNSS slave antenna signal input
37
GND
—
Ground
38
RSV
—
Reserved, floating
39
RSV
—
Reserved, floating
40
RSV
—
Reserved, floating
41
GND
—
Ground
42
ANT2_PWR
I
GNSS salve antenna power supply
43
GND
—
Ground
44
ANT1_PWR
I
GNSS master antenna power supply (antenna of
positioning)
45
GND
—
Ground