User Guide
Table Of Contents
- Document information
- Contents
- 1 LARA-R2 / LARA-R6 modules description
- 2 Migration between LARA modules
- 2.1 Overview
- 2.2 Pin-out comparison between LARA modules
- 2.3 Interfaces comparison between LARA modules
- 2.3.1 VCC module supply input
- 2.3.2 V_INT 1.8 V supply output
- 2.3.3 V_BCKP RTC supply input/output
- 2.3.4 Cellular RF interfaces
- 2.3.5 System control interfaces
- 2.3.6 SIM interface
- 2.3.7 UART interfaces
- 2.3.8 USB interface
- 2.3.9 I2C interface
- 2.3.10 Digital audio interface
- 2.3.11 Clock output
- 2.3.12 GPIOs
- 2.3.13 Antenna dynamic tuning
- 2.3.14 Reserved pins
- 2.3.15 Other considerations and test points
- 2.4 Schematic for LARA modules integration
- Appendix
- A Glossary
- Related documents
- Revision history
- Contact
LARA-R2/R6 migration guide - Application note
UBX-21010015 - R02 Migration between LARA modules Page 11 of 25
C1-Public
No
LARA-R2 series
LARA-R6 series
19
GPIO6
GPIO6
13 or 26 MHz clock output enabled by AT command.
Default: tri-stated with internal pull-down enabled.
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Driver strength: 4 mA
Internal active pull-up/down strength: ~7.5 kΩ
12.288 MHz clock output enabled by AT command
6
.
Default: tri-stated with internal pull-down enabled.
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 2 mA
Internal active pull-up/down strength: ~100 kΩ
20
GND
GND
Ground
Ground
21
HOST_SELECT
GND
Selection of module / host processor configuration
function not supported by current FW version.
Default: tri-stated with internal pull-down enabled.
V_INT voltage supply domain (1.8 V)
Internal active pull-up/down strength: ~7.5 kΩ
Ground
22
GND
GND
Ground
Ground
23
GPIO2
GPIO2
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output.
Default: output for external GNSS supply enable control
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 6 mA
Internal active pull-up/down strength: ~7.5 kΩ
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output.
Default: output for external GNSS supply enable control
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 2 mA
Internal active pull-up/down strength: ~100 kΩ
24
GPIO3
GPIO3
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output,
external GNSS data ready input.
Default: input for external GNSS Tx data ready
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 6 mA
Internal active pull-up/down strength: ~7.5 kΩ
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output,
external GNSS data ready input, Last gasp trigger input,
Faster and safe power-off trigger input.
Default: input for external GNSS Tx data ready
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 2 mA
Internal active pull-up/down strength: ~100 kΩ
25
GPIO4
GPIO4
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output.
Default: output / low
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 6 mA
Internal active pull-up/down strength: ~7.5 kΩ
GPIO configurable as Input, Output, Network status
indication output, external GNSS supply enable output.
Default: output / low
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 2 mA
Internal active pull-up/down strength: ~100 kΩ
26
SDA
SDA
I2C data
(open drain, idle high, active low, no internal pull-up).
Alternative function:
Second auxiliary UART data input
(idle high, active low, with internal active pull-up enabled).
V_INT voltage supply domain (1.8 V)
I2C data
(open drain, idle high, active low, 2.2 kΩ internal pull-up).
V_INT voltage supply domain (1.8 V)
6
LARA-R6001, LARA-R6401 and LARA-R6801 only.