unicore UM982eb - Page 10

UC-08-M31 EN R1.0 Interfaces 5
No.
Pin Name
I/O
Description
10
RSV#12
—
Reserved
11
EVENT
I
Event input, with adjustable frequency and polarity
12
RSV#29
—
Reserved
13
TXD3
O
COM3 output, can be used as CAN TXD, LVTTL
14
GND
—
Ground
15
TXD1
O
COM1 output, LVTTL
16
RXD1
I
COM1 input, LVTTL
17
GND
—
Ground
18
TXD2
O
COM2 output, LVTTL
19
RXD2
I
COM2 input, LVTTL
20
GND
—
Ground
21
PVT_STAT
O
PVT status, active high.
High level when positioning and low level when not
positioning.
22
GND
—
Ground
23
PPS
O
Pulse per second, with adjustable pulse width and
polarity
24
RSV#31
—
Reserved
25
RTK_STAT
O
RTK status, active high.
High level for RTK fixed solution and low level for
other status.
26
ERR_STAT
O
Error status, active high.
High level when failing self-test and low level when
passing self-test.
27
SDA
I/O
I
2
C data
28
SCL
I/O
I
2
C clock
 The availability of the ports depends on the firmware version of the UM982 module.