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 12 of 25
C1-Public
No
LARA-R2 series
LARA-R6 series
27
SCL
SCL
I2C clock
(open drain, idle high, active low, no internal pull-up).
Alternative function:
Second auxiliary UART data output
(push-pull, idle high, active low).
V_INT voltage supply domain (1.8 V)
I2C clock
(open drain, idle high, active low, 2.2 kΩ internal pull-up).
V_INT voltage supply domain (1.8 V)
28
USB_D-
USB_D-
USB data I/O (D-)
High-speed USB 2.0
Test point highly recommended
USB data I/O (D-)
High-speed USB 2.0
Test point highly recommended
29
USB_D+
USB_D+
USB data I/O (D+)
High-speed USB 2.0
Test point highly recommended
USB data I/O (D+)
High-speed USB 2.0
Test point highly recommended
30
GND
GND
Ground
Ground
31
RSVD
RSVD
Reserved for future use
Internally not connected
Reserved for future use
Internally not connected
32
GND
GND
Ground
Ground
33
RSVD
RSVD
Reserved use
It must be connected to ground
Reserved use
Test point highly recommended
34
I2S_WA
I2S_WA
7
I2S Word Alignment, alternatively configurable GPIO.
Default: I2S Word Alignment
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
I2S Word Alignment, alternatively configurable GPIO.
Default: I2S Word Alignment
V_INT voltage supply domain (1.8 V)
Push-pull output type.
Output driver strength: 2 mA
Internal active pull-up/down strength: ~7.5 kΩ
35
I2S_TXD
I2S_TXD
7
I2S data output, alternatively configurable GPIO.
Default: I2S data output
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
I2S data output, alternatively configurable GPIO.
Default: I2S data output
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
36
I2S_CLK
I2S_CLK
7
I2S clock, alternatively configurable GPIO.
Default: I2S clock
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
I2S clock, alternatively configurable GPIO.
Default: I2S clock
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
37
I2S_RXD
I2S_RXD
7
I2S data input, alternatively configurable GPIO.
Default: I2S data input
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
I2S input, alternatively configurable GPIO.
Default: I2S data input
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
7
LARA-R6001, LARA-R6401 and LARA-R6801 only.