u-blox LEA-5 Series - Page 29

LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2 Released Design-in
Page 29 of 68
Function
PIN
No
I/O
Description
Remarks
System
RESET_N
10
I
Hardware Reset
(Active Low)
Leave open if not used. Do not drive high.
TIMEPULSE
28
O
Timepulse
Signal
Configurable Timepulse signal (one pulse per second by default).
Leave open if not used.
EXTINT0
27
I
External
Interrupt
External Interrupt Pin.
Internal pull-up resistor to VCC. Leave open if not used.
SDA2
1
I/O
DDC Pins
DDC Data. Leave open, if not used.
SCL2
2
I/O
DDC Pins
DDC Clock. Leave open, if not used.
Reserved
12
I
Leave open, do not drive low.
NC
19
Not Connected
Leave open.
SCS1_N/
Reserved
20
O
SPI
LEA-5Q: SPI Chip Select. Leave open if not used. (Planned)
LEA-5M: Leave open.
MISO/
CFG_COM1
9
I/O
SPI
Configuration
Pin
LEA-5Q: SPI MISO. Leave open, if not used. (Planned)
LEA-5Q/LEA-5M: Leave open for default configuration.
MOSI/
CFG_COM0
21
I/O
SPI
Configuration
Pin
LEA-5Q: SPI MOSI. Leave open, if not used. (Planned)
LEA-5Q/LEA-5M: Leave open for default configuration.
SS_N/
Reserved
22
I
SPI
Reserved
LEA-5Q: SPI Slave Select. Leave open, if not used. (Planned)
LEA-5M: Leave open.
SCK/CFG_G
PS/
Reserved
23
I/O
SPI/Power
Mode
LEA-5Q: SPI Clock / Power Mode Configuration Pin. Leave open, if
not used. (Planned)
LEA-5M: Leave open.
Table 5: Pin description LEA-5Q/5M
The above design is for the USB in BUS-powered mode. For Self-powered mode pin 21 (CFG_COM0)
must be connected to GND. NMEA baud rate is 38400 when in self-powered mode. For more
information see the LEA-5 Data Sheet [1].