Hardware interface description

Interface overview

V1.4

V1.3

40 PIN GPIO

GPIO Voltage

voltage range

Type	Voltage	Tolerance
GPIO	3.3V	3.63V

GPIO Interfaces

ROCK 3C provides a 40pin GPIO socket, which is compatible with most sensor applications on the market.

caution

Tips: The actual compatibility is subject to usage.

caution

Pin 3 and Pin 5 have additional pull-up to power downstream I2C devices, as such when used as GPIO they may not work correctly.

GPIO number	Function5	Function4	Function3	Function2	Function1	Pin#	Pin#	Function1	Function2	Function3	Function4	Function5	GPIO number
					+3.3V	1	2	+5.0V
32			I2C3_SDA_M0	UART3_RX_M0	GPIO1_A0	3	4	+5.0V
33			I2C3_SCL_M0	UART3_TX_M0	GPIO1_A1	5	6	GND
116		PWM14_M0			GPIO3_C4	7	8	GPIO0_D1	UART2_TX_M0				25
					GND	9	10	GPIO0_D0	UART2_RX_M0				24
97					GPIO3_A1	11	12	GPIO3_A3				I2S3_SCLK_M0	99
98		I2S3_MCLK_M0			GPIO3_A2	13	14	GND
104					GPIO3_B0	15	16	GPIO3_B1	UART4_RX_M1	PWM8_M0			105
					+3.3V	17	18	GPIO3_B2	UART4_TX_M1	PWM9_M0			106
147		PWM15_IR_M1	I2S3_SCLK_M1	SPI3_MOSI_M1	GPIO4_C3	19	20	GND
149	UART9_TX_M1	PWM12_M1	I2S3_SDO_M1	SPI3_MISO_M1	GPIO4_C5	21	22	GPIO3_C1				I2S1_SDO2_M2	113
146		PWM14_M1	I2S3_MCLK_M1	SPI3_CLK_M1	GPIO4_C2	23	24	GPIO4_C6	SPI3_CS0_M1	PWM13_M1	UART9_RX_M1	I2S3_SDI_M1	150
					GND	25	26	GPIO4_D1	SPI3_CS1_M1
138		I2C4_SDA_M0	I2S2_SDI_M1		GPIO4_B2	27	28	GPIO4_B3			I2C4_SCL_M0	I2S2_SDO_M1	139
107					GPIO3_B3	29	30	GND
108					GPIO3_B4	31	32	GPIO3_C2	UART5_TX_M1			I2S1_SDO3_M2	114
115	UART5_RX_M1		I2S1_SCLK_RX_M2		GPIO3_C3	33	34	GND
100			I2S3_LRCK_M0		GPIO3_A4	35	36	GPIO3_A7					103
36			I2S1_SCLK_RX_M0		GPIO1_A4	37	38	GPIO3_A6				I2S3_SDI_M0	102
					GND	39	40	GPIO3_A5				I2S3_SDO_M0	101

wiringX GPIO mapping

MIPI CSI

PIN	Name
1	VCC_CAM
2	I2C2_SDA_M1
3	I2C2_SCL_M1
4	CIF_CLKOUT
5	PWDN_GPIO3_C6
6	GND
7	MIPI_CSI_RX_CLK0P
8	MIPI_CSI_RX_CLK0N
9	GND
10	MIPI_CSI_RX_D1P
11	MIPI_CSI_RX_D1N
12	GND
13	MIPI_CSI_RX_D0P
14	MIPI_CSI_RX_D0N
15	GND

MIPI DSI

PIN	Name
1	VCC_MIPI
2	VCC_MIPI
3	GND
4	I2C3_SDA_M1
5	I2C3_SCL_M1
6	GND
7	MIPI_DSI_TX1_D0P
8	MIPI_DSI_TX1_D0N
9	GND
10	MIPI_DSI_TX1_CLKP
11	MIPI_DSI_TX1_CLKN
12	GND
13	MIPI_DSI_TX1_D1P
14	MIPI_DSI_TX1_D1N
15	GND

FAN

ROCK 3C has a 2PIN fan power interface, the specification is GH 2PIN 1.25mm