unicore UM220-IV NL, Инструкция по установке и эксплуатации, Страница: 13 / 23

UM220-IV NL User Manual
8
3.4 Pin Definition (Top View)
NC
NC
TXD1
RXD1
VCC
TIME PULSE
NC
NC
NC
NC
AADET_N
nRESET
VCC_RF
GND
RF_IN
GND
V_BCKP
GND
GND
NC
GPIO2
TXD2
RXD2
NC
Top View
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Figure 3-2 UM220-IV NL Top View
No Name I/O Electrical level Description
1 nRESET I LVTTL
For reset, Low level active, if you do
not use the pin, please leave it
floating
2 AADET_N I LVTTL Antenna detection
3 TIMEPULSE O LVTTL Time pulse (1PPS)
4 NC I LVTTL Reserve
5 GPIO2 I LVTTL Antenna detection
6 TXD2 O LVTTL UART 2-TX
7 RXD2 I LVTTL UART 2-RX
8 NC Reserve
9 VCC_RF O =VCC Output voltage RF section
10 GND — Ground
11 RF_IN I GNSS signal input (BDS B1+GPS L1
）
12 GND — Ground
13 GND — Ground
14 NC Reserve
15 NC Reserve
16 NC Reserve
17 NC Reserve
18 NC I/O LVTTL Reserve
19 NC I/O LVTTL Reserve
20 TXD1 O LVTTL UART 1-TX
21 RXD1 I LVTTL UART 1-RX