Jetson TX1 GPIO mapping

	A	B	C	D	E	F	G	H	I	J	K
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 signal	Tegra pin	HW GPIO	Linux GPIO Within Chip	Assumed Linux GPIO Chip Base	Linux GPIO	Notes
4	1	3V3
5	2	5V0
6	3	SDA1	I2C_GP0_SDA_3V3_LVL I2C_GP0_DAT_1V8	I2C_GP0_DAT	GEN1_I2C_SDA_1V8	GEN1_I2C_SDA	J.00	72	0	72	Don't use as GPIO
7	4	5V0
8	5	SCL1	I2C_GP0_SCL_3V3_LVL I2C_GP0_CLK_1V8	I2C_GP0_CLK	GEN1_I2C_SCL_1V8	GEN1_I2C_SCL	J.02	74	0	74	Don't use as GPIO
9	6	GND
10	7	GPIO_GCLK	AUDIO_I2S_MCLK_3V3 AUDIO_I2S_MCLK	AUDIO_MCLK	AUD_MCLK_AP AUD_MCLK_L	AUD_MCLK	BB.00	216	0	216
11	8	TXD0	UART1_TXD_HDR_3V3 UART0_TXD_HDR_1V8 UART0_TXD	UART0_TX	UART1_TXD_AP	UART1_TX	U.00	160	0	160	Don't use as GPIO
12	9	GND
13	10	RXD0	UART1_RXD_HDR_3V3 UART0_RXD_HDR_1V8 UART0_RXD	UART0_RX	UART1_RXD_AP	UART1_RX	U.01	161	0	161	Don't use as GPIO
14	11	GPIO_GEN0	UART1_RTS_HDR_3V3 UART0_RTS	UART0_RTS	UART1_RTS_AP	UART1_RTS	U.02	162	0	162
15	12	GPIO_GEN1	AUDIO_I2S_SRCLK_3V3 AUDIO_I2S_SRCLK	I2S0_CLK	DAP1_SCLK_AP DAP1_SCLK_L	DAP1_SCLK	B.03	11	0	11
16	13	GPIO_GEN2	AUDIO_CDC_IRQ_LVL AUDIO_CDC_IRQ	GPIO20_AUD_INT	AUD_INT	GPIO_PE6	E.06	38	0	38
17	14	GND
18	15	GPIO_GEN3	GPIO_EXP_P17_3V3	NA (TCA9539 7'h74 )			P17	15	496	511
19	16	GPIO_GEN4	AO_DMIC_IN_DAT_LVL AO_DMIC_IN_DAT	AO_DMIC_IN_DAT	DMIC3_DAT_AP	DMIC3_DAT	E.05	37	0	37
20	17	3V3							0
21	18	GPIO_GEN5	MDM_WAKE_AP_LVL MDM_WAKE_AP_1V8	GPIO16_MDM_WAKE_AP	MDM_WAKE_AP	MODEM_WAKE_AP	X.00	184	0	184
22	19	SPI_MOSI	SPI1_MOSI_3V3 SPI1_MOSI	SPI1_MOSI	SPI1_MOSI_AP	SPI1_MOSI	C.00	16	0	16
23	20	GND
24	21	SPIO_MISO	SPI1_MISO_3V3 SPI1_MISO	SPI1_MISO	SPI1_MISO_AP	SPI1_MISO	C.01	17	0	17
25	22	GPIO_GEN6	GPIO_EXP_P16_3V3	NA (TCA9539 7'h74 )			P16	14	496	510
26	23	SPI_SCLK	SPI1_SCK_3V3 SPI1_SCK	SPI1_CLK	SPI1_SCK_AP	SPI1_SCK	C.02	18	0	18
27	24	SPI_CE0_N	SPI1_CS0_3V3 SPI1_CS0	SPI1_CS0	SPI1_CS0_AP	SPI1_CS0	C.03	19	0	19
28	25	GND
29	26	SPI_CE1_N	SPI1_CS1_3V3 SPI1_CS1	SPI1_CS1	SPI1_CS1_AP	SPI1_CS1	C.04	20	0	20
30	27	ID_SD	I2C_GP1_DAT_3V3	I2C_GP1_DAT	GEN2_I2C_SDA_3V3	GEN2_I2C_SDA	J.03	75	0	75	Don't use as GPIO
31	28	ID_SC	I2C_GP1_CLK_3V3	I2C_GP1_CLK	GEN2_I2C_SCL_3V3	GEN2_I2C_SCL	J.02	74	0	74	Don't use as GPIO
32	29	GPIO5	AUD_RST_LVL AUD_RST	GPIO19_AUD_RST	GPIO_X1_AUD	GPIO_X1_AUD	BB.03	219	0	219
33	30	GND
34	31	GPIO6	MOTION_INT_AP_L_LVL MOTION_INT_AP_L	GPIO9_MOTION_INT	MOTION_INT	MOTION_INT	X.02	186	0	186
35	32	GPIO12	AO_DMIC_IN_CLK_LVL AO_DMIC_IN_CLK	AO_DMIC_IN_CLK	DMIC3_CLK_AP	DMIC3_CLK	E.04	36	0	36
36	33	GPIO13	AP_WAKE_BT_3V3 AP_WAKE_BT	GPIO11_AP_WAKE_BT	AP_WAKE_BT2	AP_WAKE_NFC	H.07	63	0	63
37	34	GND
38	35	GPIO19	AUDIO_I2S_SFSYNC_3V3 AUDIO_I2S_SFSYNC	I2S0_LRCLK	DAP1_FS_AP	DAP1_FS	B.00	8	0	8
39	36	GPIO16	UART1_CTS_HDR_3V3 UART0_CTS	UART0_CTS	UART1_CTS_AP	UART1_CTS	U.03	163	0	163
40	37	GPIO26	SAR_TOUT_LVL SAR_TOUT	GPIO8_ALS_PROX_INT	ALS_PROX_INT	ALS_PROX_INT	X.03	187	0	187
41	38	GPIO20	AUDIO_I2S_SIN_3V3 AUDIO_I2S_SIN	I2S0_SDIN	DAP1_DIN_AP	DAP1_DIN	B.01	9	0	9
42	39	GND
43	40	GPIO21	AUDIO_I2S_SOUT_3V3 AUDIO_I2S_SOUT	I2S0_SDOUT	DAP1_DOUT_AP	DAP1_DOUT	B.02	10	0	10
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