Miscellaneous Interfaces
Jetson AGX Xavier Series Product DG-09840-001_v2.5 | 105
Figure 13-1. I2C Connections
Jetson AGX Xavier
SoC – I2C
PWR_I2C_SCL
PWR_I2C_SDA
CAM_I2C_SCL
CAM_I2C_SDA
SYS
To Voltage
Monitors
1.8V
CAM
CONN
1kΩ
AO
GEN2_ I2C_SCL
GEN2_ I2C_SDA
DP_AUX_CH0_N
DP_AUX_CH0_P
EDP
DP_AUX_CH1_N
DP_AUX_CH1_P
1kΩ
1.8V
1kΩ
1kΩ
1.8V
1kΩ
1kΩ
Used on carrier board as camera module control
interface
I2C3_CLK
I2C3_DAT
I2C1_CLK
I2C1_DAT
I2C2_CLK
I2C2_DAT
I2C4_CLK
I2C4_DAT
DP0_AUX_CH_N
DP0_AUX_CH_P
DP1_AUX_CH_N
DP1_AUX_CH_P
DP2_AUX_CH_N
DP2_AUX_CH_P
I2C5_CLK
I2C5_DAT
VM _I 2C_ SCK
VM_I2C_DAT
Used on carrier board for DP over USB type C.
Al ternat ely a va ila bl e f or HD MI DD C o r mi sc. I 2 C usa ge
Used on carrier board for DP over USB type C.
Al ternat ely a va ila bl e f or HD MI DD C o r mi sc. I 2 C usa ge
GEN8_ I2C_SCL
GEN8_ I2C_SDA
1.8V
1kΩ
1kΩ
I2C2
I2C6
I2C5
I2C3
I2C4
I2C8
Used on carrier board for audio codec & available
for other misc. I2C usage
Used on-module for current monitors & available
on carrier bo ar d fo r mi sc. I2 C usa ge
E53
F53
J61
K61
D61
E60
F51
F52
J53
J52
GEN1_ I2C_SCL
GEN1_ I2C_SDA
1kΩ
1kΩ
1.8V
Used on-module for ID EEPROM & available on
carrier board for misc I2C usage
K5
I2C1
L8
DP_AUX_CH3_N
DP_AUX_CH3_P
Routed on carrier board to Expansion Connector
through se lec ta bl e voltage leve l s hifte r (1 .8 V o r
3.3 V)
I2C9
A53
C53
DP_AUX_CH2_N
DP_AUX_CH2_P
Used on carrier board for HDMI. Alternately
available for DP AUX or misc. I2C usage
I2C7
G54
G53
1.8V
1kΩ
1kΩ
Mux
JAXi Only
L44
L45
JAXi only: Routed to safety MCU if implemented
SEL
SYS_RESET_N LVL
On-Module
Control
Note: If I2C interfaces are routed to M.2 Key E or Key M connectors, it is recommended that 0Ω
series resistors be included to allow these to be disconnected. Some M.2 Key E and Key M cards
can cause conflicts with other devices connected to the I2C interfaces.
13.1.1 I2C Design Guidelines
Care must be taken to ensure I2C peripherals on same I2C bus connected to Jetson AGX
Xavier do not have duplicate addresses. Addresses can be in two forms: 7-bit, with the
Read/Write bit removed or 8-bit including the Read/Write bit. Be sure to compare I2C device
addresses using the same form (all 7-bit or all 8-bit format).
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