Connect Tech NVIDIA Jetson TX2 - Page 13

Orbitty Carrier for NVIDIA® Jetson™ TX2/TX2i
Users Guide
www.connecttech.com
Document: CTIM-00471
Revision: 0.14
Page 13 of 31 Date: 2021-10-05
TX2/TX2i/TX1 Module
- This is level shifted on the Orbitty carrier
to support 3.3V logic.
- Under L4T this port will show up as
/dev/ttyS0
UART1 TX
UART 1 Transmit Pin
- This signal is the UART channel 1 output
from the TX2/TX2i/TX1 Module
- This is level shifted on the Orbitty carrier
to support 3.3V logic.
- Under L4T this port will show up as
/dev/ttyTHS2
Output
3.3V CMOS
5
UART1 RX
UART 1 Receive Pin
- This signal is the UART channel 1 input on
TX2/TX2i/TX1 Module
- This is level shifted on the Orbitty carrier
to support 3.3V logic.
- Under L4T this port will show up as
/dev/ttyTHS2
Input
3.3V CMOS
6
GPIO-[0:3]
GPIO Bits 0 to 3
- This signal is the GPIO Bit 0 and can be
configured as an Input or an Output
- This is level shifted on the Orbitty carrier
to support 3.3V logic.
Please reference our GPIO KDB
for TX2/TX2i/TX1
values.
Input/Output
Configurable
3.3V CMOS
7,8,9,10
I2C CLK
I2C Clock Signal
- This is clock signal on the I2C bus
- This signal has a pull up on the
TX2/TX2i/TX1 module to +3.3V
- Under L4T this is I2C bus # 1
Output
+3.3V
Open Drain
11
I2C SDA
I2C Data Signal
- This is data signal on the I2C bus
- This signal has a pull up on the
TX2/TX2i/TX1 module to +3.3V
- Under L4T this is I2C bus # 1
Bidirectional
+3.3V
Open Drain
12
RECOVERY
System Recovery Pin
- Shorting this signal to Ground will
initialize a system recovery procedure
Input 13
RTC BAT INPUT
RTC Battery Input
- Use this pin to connect a backup battery
source (Coin Cell or other) to sustain the
RTC clock on the TX2/TX2i/TX1 module.
- The voltage should be provided from a 3V
source
Input 14
RESET
External Reset Button Source
Input
15