Jetson TX1 GPIO mapping
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1
Jetson TX1 J21 GPIO Expansion Header Mapping
2
3
Connector
Pin #
Connector
Label
CV-B signal
CV-B/CV-M connector signal
CV-M signalTegra pinHW GPIO
Linux GPIO
Within Chip
Assumed Linux
GPIO Chip Base
Linux GPIONotes
4
13V3
5
25V0
6
3SDA1
I2C_GP0_SDA_3V3_LVL
I2C_GP0_DAT_1V8
I2C_GP0_DATGEN1_I2C_SDA_1V8GEN1_I2C_SDAJ.0072072Don't use as GPIO
7
45V0
8
5SCL1
I2C_GP0_SCL_3V3_LVL
I2C_GP0_CLK_1V8
I2C_GP0_CLKGEN1_I2C_SCL_1V8GEN1_I2C_SCLJ.0274074Don't use as GPIO
9
6GND
10
7GPIO_GCLK
AUDIO_I2S_MCLK_3V3
AUDIO_I2S_MCLK
AUDIO_MCLK
AUD_MCLK_AP
AUD_MCLK_L
AUD_MCLKBB.002160216
11
8TXD0
UART1_TXD_HDR_3V3
UART0_TXD_HDR_1V8
UART0_TXD
UART0_TXUART1_TXD_APUART1_TXU.001600160Don't use as GPIO
12
9GND
13
10RXD0
UART1_RXD_HDR_3V3
UART0_RXD_HDR_1V8
UART0_RXD
UART0_RXUART1_RXD_APUART1_RXU.011610161Don't use as GPIO
14
11GPIO_GEN0
UART1_RTS_HDR_3V3
UART0_RTS
UART0_RTSUART1_RTS_APUART1_RTSU.021620162
15
12GPIO_GEN1
AUDIO_I2S_SRCLK_3V3
AUDIO_I2S_SRCLK
I2S0_CLK
DAP1_SCLK_AP
DAP1_SCLK_L
DAP1_SCLKB.0311011
16
13GPIO_GEN2
AUDIO_CDC_IRQ_LVL
AUDIO_CDC_IRQ
GPIO20_AUD_INTAUD_INTGPIO_PE6E.0638038
17
14GND
18
15GPIO_GEN3GPIO_EXP_P17_3V3NA (TCA9539 7'h74 )P1715496511
19
16GPIO_GEN4
AO_DMIC_IN_DAT_LVL
AO_DMIC_IN_DAT
AO_DMIC_IN_DATDMIC3_DAT_APDMIC3_DATE.0537037
20
173V30
21
18GPIO_GEN5
MDM_WAKE_AP_LVL
MDM_WAKE_AP_1V8
GPIO16_MDM_WAKE_APMDM_WAKE_APMODEM_WAKE_APX.001840184
22
19SPI_MOSI
SPI1_MOSI_3V3
SPI1_MOSI
SPI1_MOSISPI1_MOSI_APSPI1_MOSIC.0016016
23
20GND
24
21SPIO_MISO
SPI1_MISO_3V3
SPI1_MISO
SPI1_MISOSPI1_MISO_APSPI1_MISOC.0117017
25
22GPIO_GEN6GPIO_EXP_P16_3V3NA (TCA9539 7'h74 )P1614496510
26
23SPI_SCLKSPI1_SCK_3V3
SPI1_SCK
SPI1_CLKSPI1_SCK_APSPI1_SCKC.0218018
27
24SPI_CE0_NSPI1_CS0_3V3
SPI1_CS0
SPI1_CS0SPI1_CS0_APSPI1_CS0C.0319019
28
25GND
29
26SPI_CE1_NSPI1_CS1_3V3
SPI1_CS1
SPI1_CS1SPI1_CS1_APSPI1_CS1C.0420020
30
27ID_SDI2C_GP1_DAT_3V3I2C_GP1_DATGEN2_I2C_SDA_3V3GEN2_I2C_SDAJ.0375075Don't use as GPIO
31
28ID_SCI2C_GP1_CLK_3V3I2C_GP1_CLKGEN2_I2C_SCL_3V3GEN2_I2C_SCLJ.0274074Don't use as GPIO
32
29GPIO5AUD_RST_LVL
AUD_RST
GPIO19_AUD_RSTGPIO_X1_AUDGPIO_X1_AUDBB.032190219
33
30GND
34
31GPIO6
MOTION_INT_AP_L_LVL
MOTION_INT_AP_L
GPIO9_MOTION_INTMOTION_INTMOTION_INTX.021860186
35
32GPIO12
AO_DMIC_IN_CLK_LVL
AO_DMIC_IN_CLK
AO_DMIC_IN_CLKDMIC3_CLK_APDMIC3_CLKE.0436036
36
33GPIO13
AP_WAKE_BT_3V3
AP_WAKE_BT
GPIO11_AP_WAKE_BTAP_WAKE_BT2AP_WAKE_NFCH.0763063
37
34GND
38
35GPIO19
AUDIO_I2S_SFSYNC_3V3
AUDIO_I2S_SFSYNC
I2S0_LRCLKDAP1_FS_APDAP1_FSB.00808
39
36GPIO16
UART1_CTS_HDR_3V3
UART0_CTS
UART0_CTSUART1_CTS_APUART1_CTSU.031630163
40
37GPIO26SAR_TOUT_LVL
SAR_TOUT
GPIO8_ALS_PROX_INTALS_PROX_INTALS_PROX_INTX.031870187
41
38GPIO20
AUDIO_I2S_SIN_3V3
AUDIO_I2S_SIN
I2S0_SDINDAP1_DIN_APDAP1_DINB.01909
42
39GND
43
40GPIO21
AUDIO_I2S_SOUT_3V3
AUDIO_I2S_SOUT
I2S0_SDOUTDAP1_DOUT_APDAP1_DOUTB.0210010
44
45
46
47
48
49
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51
52
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56
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