RoyalTek rdr-3100 用户手册
RoyalTek Confidential
8
RDR-3100 User Manual
5. HW Interface
5.1 Connector Type：20 Pin Header，2.0 mm pitch (J2)
Pin
NO
NO
Si g nal N a me I/O Des cri ptio n
C ha r a cter istic s
1
N.C
None connector
2
GPS 5V
I
+5V DC Power Input
DC +5V ± 1%.
3
RTC (Backup
voltage)
voltage)
I
User Supply DC +2.6 ~
+3.6V
+3.6V
DC +2.6 ~ +3.6V.
Current
Current
≤
10uA w/o battery
4
GPS 5V
I
+5V DC Power Input
5
Reset
I
Reset (Active low)
8
.
0
2.3V
V
IH
V
V
IL
<
>
6
Boot
I
Boot mode
V
V
V
V
IL
IH
855
.
0
0.3V
-
995
.
1
15
.
3
≤
≤
≥
≥
7
Back (Reverse
line)
line)
I
Forward or Back
Forward (Hi level :>2V)
Backward (Lo level: <0.8V)
Backward (Lo level: <0.8V)
8
N.C
None connector
9
Odometer
I
Odometer
Input frequency<4k HZ
Vih > 2V Vil<0.8V
Vih > 2V Vil<0.8V
10 GND
G
Ground
Reference Ground
11 TXD1 (SiRF 3
TXD1)
O
NMEA (transmit) Car PC
(UAR1)
4800bps, 8 data bits, no
parity, 1 stop bit
(UAR1)
4800bps, 8 data bits, no
parity, 1 stop bit
V
V
V
V
V
OL
OH
715
.
0
375
.
2
85
.
2
≤
≥
≥
12 RXD1 (SiRF 3
RXD1)
I
NMEA (Receive) Car PC
(UAR1)
(UAR1)
V
V
V
V
V
IL
IH
855
.
0
0.3V
-
995
.
1
15
.
3
≤
≤
≥
≥
13 GND
G
Ground
Reference Ground
14 TXD2 (SiRF 3
TXD2)
O
Can bus data (transmit)
Car PC (UAR2)
Car PC (UAR2)
Vih > VDD-0.1V Vil<0.6V
VDD:3.3V for MCU
VDD:3.3V for MCU
15 RXD2 (SiRF 3
RXD2)
I
Can bus data (Receive)
Car PC (UAR2)
Car PC (UAR2)
Vih > 2V Vil<0.8V
16 GND
G
Ground
Reference Ground
17 GND
G
Ground
18 GND
G
Ground
Reference Ground
19 N.C
NC
20 N.C
NC
l GPS_5V
This is the DC power supply input pin for system. .
l GND
GND provides the reference ground.
l BOOT
Set this pin to high for programming flash.
l RXD1