P306/P307 Integrator’s Guide
Chapter 2-Board Overview
Page 15 of 39
Table 2-2: Eclipse 34-pin header pinout
Pin
Name
Type
Description
1
3.3 V
Power
Receiver power supply, 3.3 V
2
3.3 V
Power
Receiver power supply, 3.3 V
3
Antenna Pwr
Power
Antenna power, DC, 15 V max
4
Batt Backup
Power
Power, 1.5 to 5.5 V, 500 nA typical
5
USB DEV+
I/O
USB device data +
6
USB DEV–
I/O
USB device data -
7
GND
Power
Receiver ground
8
GND
Power
Receiver ground
9
PATX
Output
Port A serial output, 3.3 V CMOS, idle high
10
PARX
Input
Port A serial input, 3.3 V CMOS, idle high
11
PBTX
Output
Port B serial output, 3.3 V CMOS, idle high
12
PBRX
Input
Port B serial input, 3.3 V CMOS, idle high
13
PDTX
Output
Port D serial output, 3.3 V CMOS, idle high
14
PDRX
Input
Port D serial input, 3.3 V CMOS, idle high
15
1 PPS
Output
Active high, rising edge, 3.3 V CMOS
16
Manual Mark
Input
Active low, falling edge, 3.3 V CMOS
17
GPS Lock
Output
Status indicator, 3.3 V CMOS, active low
18
Diff Lock
Output
Status indicator, 3.3 V CMOS, active low
19
DGPS Lock
Output
Status indicator, 3.3 V CMOS, active low
20
n/c
n/c
n/c
21
GPIO0
I/O
General purpose input/output
22
GPIO1
I/O
General purpose input/output
23
GPIO2
I/O
General purpose input/output
24
GPIO3
I/O
General purpose input/output
25
Speed Output
Output
0 - 3 V variable clock output
26
Speed Ready
Output
Active low, speed valid indicator, 3.3 V CMOS
27
GND
Power
Receiver ground
28
GND
Power
Receiver ground
29
USB Host +
I/O
HOST USB+
30
USB Host -
I/O
HOST USB-
31
PCTX
Output
Port C serial output, 3.3 V CMOS, idle high
32
PCRX
Input
Port C serial input, 3.3 V CMOS, idle high
33
L-Band Enable
Output
Reserved
34
Reset
Open
collector
Reset, open collector, 3.3 V typical, not required
Note: Pins are not 5 V tolerant. The pin voltage range is 0 to 3.3 VDC, unless otherwise noted.
Leave any data or I/O pins that will not be used unconnected.
Summary of Contents for P306
Page 44: ......
