Справочник Пользователя для RoyalTek meb-1000
3
MEB-1000 User Manual
4
VCC
I
DC Supply Voltage Output
3.3V±5%
5
Reset
I
External Reset Signal
6
NC
7
NC
8
NC
9
NC
10
NC
11
TX0
O
Serial Port 0
12
RX0
I
Serial Port 0
13
NC
14
TX1
O
Serial Port 1
15
RX1
I
Serial Port 1
16
NC
17
NC
18
GND G
Reference
Ground
19
Time Mark
O
One pulse per second
20
GND G
Reference
Ground
Table 1-2 Switch U4
Pin #
Signal Name 0/1
Description
Characteristics
1
GPIO-0 GPIO
input/output
Switch:
0:Low 1:High CMOS
TTL Level
0:Low 1:High CMOS
TTL Level
2
GPIO-4 GPIO
input/output
Switch:
0:Low 1:High CMOS
TTL Level
0:Low 1:High CMOS
TTL Level
3
N.C
4
N.C
5
GPS_3V3
Power supply for GPS section Switch:
0:Low 1: DC 3.3V
output
output
6
N.C
7
N.C
8
RF_Bias
RF_Bias voltage switch
0: open. No voltage
provide antenna.
1:Provide 2.85V to
provide antenna.
1:Provide 2.85V to