unicore UM960, Инструкция по установке и эксплуатации

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6 Hardware UC-00-M34 EN R1.1
Table 2-1 Pin Definition
No. Pin I/O Description
1 RSV —
Reserved, must be floating; cannot connect
ground or power supply or peripheral I/O
2 RSV —
Reserved, must be floating; cannot connect
ground or power supply or peripheral I/O
3 PPS O
Pulse per second, with adjustable pulse width
and polarity
4 EVENT I
Event Mark, with adjustable frequency and
polarity
5 RSV —
Built-in function; recommended to add a
through-hole testing point and a 10 kΩ pull-up
resistor; cannot connect ground or power
supply or peripheral I/O, but can be floating.
6 TXD2 O UART2 output
7 RXD2 I UART2 input
8 RESET_N I
System reset; active Low. The active time should
be no less than 5 ms.
9 VCC_RF
1
O External LNA power supply
10 GND — Ground
11 ANT_IN I GNSS antenna signal input
12 GND — Ground
13 GND — Ground
14 RTK_STAT O
High level: RTK Fix;
Low level: RTK No Fix
15 RXD3 I UART3 input
16 TXD3 O UART3 output
17 RSV —
Built-in function; recommended to add a
through-hole testing point and a 10 kΩ pull-up
resistor; cannot connect ground or power
supply or peripheral I/O, but can be floating.
18 SDA I/O I
2
C data
1
Not recommended to take VCC_RF as ANT_BIAS to feed the antenna See section 3.1 for more details.