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Orbitty Carrier for Jetson™ TX1
Users Guide
www.connecttech.com
Document: CTIM-00471
Revision: 0.05
Page 12 of 27
Connect Tech Inc. 800-426-8979 | 519-836-1291
Date: 2016/12/01
System Expansion IO Connector – Detailed Signal Descriptions
Signal Name
Description Type
Pin
Number(s)
+3.3V OUTPUT
+3.3V Power Output Pin
- Max output should be limited to 1A
- Please note there is no external fuse.
Output 1
+5V OUTPUT
+5V Power Output Pin
- Max output should be limited to 1A
- Please note there is no external fuse.
Output 2
UART0 TX
UART 0 Transmit Pin
- This signal is the UART port 0 output from the
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
Output
3.3V CMOS
3
UART0 RX
UART 0 Receive Pin
- This signal is the UART channel 0 input on 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
Input
3.3V CMOS
4
UART1 TX
UART 1 Transmit Pin
- This signal is the UART channel 1 output from
the 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 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.
- GPIO-0 = sysfs GPIO 187
- GPIO-1 = sysfs GPIO 186
- GPIO-2 = sysfs GPIO 89
- GPIO-3 = sysfs GPIO 202
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 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 TX1 module to
+3.3V
Bidirectional
+3.3V
Open Drain
12