Hardware Interface Description

Chip block diagram

Physical photographs

Interface details

eMMC && SPI Flash Connector

Pin	Name	Pin	Name
1	eMMC_DTE	2	eMMC_D5
3	GND	4	eMMC_D4
5	GND	6	eMMC_D0/FSPI_D0
7	GND	8	eMMC_CLKOUT
9	GND	10	eMMC_D3/FSPI_D3
11	GND	12	VCCIO_FLASH
13	GND	14	GND
15	eMMC_DATA_STROBE	16	GND
17	GND	18	GND
19	GND	20	VCCIO_FLASH
21	VCCIO_FLASH	22	VCC_3V3_S0
23	VCC_3V3_S0	24	GND
25	eMMC_CMD/FSPI_CLK	26	GND
27	eMMC_D2/FSPI_D2	28	GND
29	eMMC_D1/FSPI_D1	30	GND
31	eMMC_D7	32	GND
33	eMMC_D6/FSPI_CS0	34	GND
35	GND	36	GND
37	GND	38	GND
39	GND	40	GND
41	GND	42	GND
43	GND	44	GND
45	GND	46	GND
47	GND	48	GND
49	GND	50	GND
51		52	GND
53		54	GND
55		56	GND
57		58	GND
59		60	GND
61		62	GND
63		64	GND

tip

eMMC and SPI Flash are mutually exclusive, the connector can only connect to one of eMMC or SPI Flash at a time.

FAN Header

Pin	Name	Pin	Name
1	FAN-PWM	2	VCC_5V0
3	GND	4	GND

GPIO

GPIO Voltage

x1.2/v1.1

GPIO	Voltage	MAX
All GPIOs	3.3V	3.63V
SARADC_IN2	1.8V	1.8V

x1.1

GPIO	Voltage	MAX
All GPIOs	3.3V	3.63V
SARADC_IN5	1.8V	1.8V

GPIO Pinout

The ROCK 5A provides a 40 pin GPIO socket that is compatible with most sensor applications on the market.

x1.2/v1.1

GPIO number	Function7	Function6	Function5	Function4	Function3	Function2	Function1	Pin#	Pin#	Function1	Function2	Function3	Function4	Function5	Function6	Function7	GPIO number
							+3.3V	1	2	+5.0V
63				PWM15_IR_M3	I2C8_SDA_M2	UART1_CTSN_M1	GPIO1_D7	3	4	+5.0V
62				PWM14_M2	I2C8_SCL_M2	UART1_RTSN_M1	GPIO1_D6	5	6	GND
43						UART4_TX_M2	GPIO1_B3	7	8	GPIO0_B5	UART2_TX_M0	I2C1_SCL_M0			I2S1_MCLK_M1		13
							GND	9	10	GPIO0_B6	UART2_RX_M0	I2C1_SDA_M0			I2S1_SCLK_M1		14
139		I2S1_SDO2_M0	CAN1_TX_M1	PWM15_IR_M1	I2C7_SDA_M3	UART8_CTSN_M0	GPIO4_B3	11	12	GPIO4_A1	UART9_CTSN_M1				I2S1_SCLK_M0	SPI0_MOSI_M1	129
138	SPI0_CS0_M1	I2S1_SDO1_M0	CAN1_RX_M1	PWM14_M1	I2C7_SCL_M3	UART8_RTSN_M0	GPIO4_B2	13	14	GND
140		I2S1_SDO3_M0	SPDIF0_TX_M1	PWM11_IR_M1		UART9_TX_M1	GPIO4_B4	15	16	GPIO1_A5						SPI2_MOSI_M0	37
							+3.3V	17	18	GPIO1_B0						SPI2_CS1_M0	40
33	SPI4_MOSI_M2				I2C2_SCL_M4	UART6_TX_M1	GPIO1_A1	19	20	GND
32	SPI4_MISO_M2				I2C2_SDA_M4	UART6_RX_M1	GPIO1_A0	21	22	GPIO1_B5	UART7_TX_M2					SPI0_CS1_M2	45
34	SPI4_CLK_M2			PWM0_M2	I2C4_SDA_M3	UART6_RTSN_M1	GPIO1_A2	23	24	GPIO1_A3	UART6_CTSN_M1	I2C4_SCL_M3	PWM1_M2			SPI4_CS0_M2	35
							GND	25	26	GPIO1_A4						SPI2_MISO_M0	36
23	SPI0_MISO_M0	I2S1_SDI2_M1		PWM6_M0	I2C6_SDA_M0	UART1_RTSN_M2	GPIO0_C7	27	28	GPIO0_D0	UART1_CTSN_M2	I2C6_SCL_M0	PWM7_IR_M0		I2S1_SDI3_M1	SPI3_MISO_M2	24
42	SPI0_MOSI_M2					UART4_RX_M2	GPIO1_B2	29	30	GND
41	SPI0_MISO_M2						GPIO1_B1	31	32	GPIO4_B0	UART8_TX_M0	I2C6_SDA_M3			I2S1_SDI3_M0	SPI2_CS1_M1	136
44	SPI0_CS0_M2					UART7_RX_M2	GPIO1_B4	33	34	GND
128	SPI0_MISO_M1	I2S1_MCLK_M0				UART9_RTSN_M1	GPIO4_A0	35	36	GPIO4_A2					I2S1_LRCK_M0	SPI0_CLK_M1	130
							SARADC_VIN2	37	38	GPIO4_A5	UART3_TX_M2	I2C3_SDA_M2			I2S1_SDI0_M0		133
							GND	39	40	GPIO4_B1	UART8_RX_M0	I2C6_SCL_M3		SPDIF1_TX_M1	I2S1_SDO0_M0	SPI0_CS1_M1	137

x1.1

Tip: Actual compatibility is subject to use.

GPIO number	Function6	Function5	Function4	Function3	Function2	Function1	Pin#	Pin#	Function1	Function2	Function3	Function4	Function5	Function6	Function7	GPIO number
						+3.3V	1	2	+5.0V
32			UART6_RX	SPI4_MISO	I2C2_SDA	GPIO1_A0	3	4	+5.0V
33			UART6_TX	SPI4_MOSI	I2C2_SCL	GPIO1_A1	5	6	GND
43			PDM1_CLK1	UART4_TX	SPI0_CLK	GPIO1_B3	7	8	GPIO0_B5	UART2_TX_M0	I2C1_SCL	I2S1_MCLK				13
						GND	9	10	GPIO0_B6	UART2_RX_M0	I2C1_SDA	I2S1_SCLK				14
34		PWM0	UART6_RTS	SPI4_CLK	I2C4_SDA	GPIO1_A2	11	12	GPIO4_A1	SPI0_MOSI	UART9_CTS	I2S1_SCLK				129
35		PWM1	UART6_CTS	SPI4_CS0	I2C4_SCL	GPIO1_A3	13	14	GND
140		I2S1_SDO3	SPDIF0_TX	PWM11	UART9_TX	GPIO4_B4	15	16	GPIO1_D6	I2C8_SCL	UART1_RTS	PWM14				62
						+3.3V	17	18	GPIO1_D7	I2C8_SDA	UART1_CTS	PWM15				63
37					SPI2_MOSI	GPIO1_A5	19	20	GND
36					SPI2_MISO	GPIO1_A4	21	22	GPIO1_B5	SPI0_CS1	UART7_TX					45
38					SPI2_CLK	GPIO1_A6	23	24	GPIO1_A7	SPI2_CS0	PDM1_SDI0	PWM3				39
						GND	25	26	SARADC_VIN5
139	CAN1_TX	I2S1_SDO2	PWM15	UART8_CTS	I2C7_SDA	GPIO4_B3	27	28	GPIO4_B2	I2C7_SCL	SPI0_CS0	UART8_RTS	PWM14	I2S1_SDO1	CAN1_RX	138
42			PDM1_SDI3	UART4_RX	SPI0_MOSI	GPIO1_B2	29	30	GND
41				PDM1_SDI2	SPI0_MISO	GPIO1_B1	31	32	GPIO4_B0	I2C6_SDA	UART8_TX	I2S1_SDI3				136
44				PDM1_CLK0	UART7_RX	GPIO1_B4	33	34	GND
128			I2S1_MCLK	UART9_RTS	SPI0_MISO	GPIO4_A0	35	36	GPIO4_A2	SPI0_CLK	I2S1_LRCK					130
40				PDM1_SDI1	SPI2_CS1	GPIO1_B0	37	38	GPIO4_A5	I2C3_SDA	UART3_TX	I2S1_SDI0				133
						GND	39	40	GPIO4_B1	I2C6_SCL	SPI0_CS1	UART8_RX	SPDIF1_TX	I2S1_SDO0		137

USB Function Configuration on 40-Pin

On the ROCK 5A's 40-Pin interface, the following pins can be configured for USB 2.0:

• USB4_DM: Pin number 28, resistor location R104.
• USB4_DP: Pin number 27, resistor location R106.

By default, Pin-27 can be configured in software for functions such as GPIO0_C7 (see 40-Pin Pinout), while the USB4_DP signal is not activated on the hardware. Pin-28 can be configured in software for functions such as GPIO0_D0 (see 40-Pin Pinout), and the USB4_DM signal is also not activated on the hardware. To change these pins to USB functions, please follow the steps below to modify the reserved resistors:

• Remove the 0-ohm resistors at R169 and R170.
• Solder 0-ohm resistors at R104 and R106.

tip

The schematic and resistor locations can be viewed and downloaded from the hardware documentation.Hardware Documentation Download

[Operation Note]

This procedure requires soldering skills, and it is recommended that it be performed by an experienced technician.

Gigabit Ethernet

Pin	Name	Pin	Name
1	PHY1_MDI0+	2	PHY1_MDI0-
3	PHY1_MDI1+	4	GND
5	GND	6	PHY1_MDI1-
7	PHY1_MDI2+	8	PHY1_MDI2-
9	PHY1_MDI3+	10	PHY1_MDI3-
11	PHY1_MDI0-	12	PHY1_MDI0+
13	GND	14	PHY1_MDI1+
15	PHY1_LED_G+	16	PHY1_G_LED-
17	PHY1_Y_LED+	18	PHY1_Y_LED
19	GND	20	GND

Maskrom Button

Pin	Name	Pin	Name
1	SARADC_VIN0_BOOT	2	GND

MIPI CSI

Pin	Name	Pin	Name
1	GND	2	MIPI_CSI0_RX_D3N
3	MIPI_CSI0_RX_D3P	4	GND
5	MIPI_CSI0_RX_D2N	6	MIPI_CSI0_RX_D2P
7	GND	8	MIPI_CSI0_RX_CLK1N
9	MIPI_CSI0_RX_CLK1P	10	GND
11	MIPI_CSI0_RX_D1N	12	MIPI_CSI0_RX_D1P
13	GND	14	MIPI_CSI0_RX_D0N
15	MIPI_CSI0_RX_D0P	16	GND
17	MIPI_CSI0_RX_CLK0N	18	MIPI_CSI0_RX_CLK0P
19	GND	20	MIPI_CAMERA2_CLK_1
21	GND	22	MIPI_CAMERA1_CLK_1
23	MIPI_CAM1_PDN_H	24	I2C3_SCK_M0
25	I2C3_SDA_M0	26	MIPI_CAM0_PDN_H
27	MIPI_CAM_RST	28	VCC_3V3_S0
29	VCC_3V3_S0	30	VCC_5V0
31	VCC_5V0

MIPI CSI

Pin	Name	Pin	Name
1	VCC_LCD_MIPI_2	2	VCC_1V8_S0
3		4	LCD_RESET_1
5		6	GND
7	MIPI_DPHY0_TX_D0N	8	MIPI_DPHY0_TX_D0P
9	GND	10	MIPI_DPHY0_TX_D1N
11	MIPI_DPHY0_TX_D1P	12	GND
13	MIPI_DPHY0_TX_CLKN	14	MIPI_DPHY0_TX_CLKP
15	GND	16	MIPI_DPHY0_TX_D2N
17	MIPI_DPHY0_TX_D2P	18	GND
19	MIPI_DPHY0_TX_D3N	20	MIPI_DPHY0_TX_D3P
22	GND	22	GND
23	TP_RST_LCD	24	VCC_TP
25	TP_INT_LCD	26	TP_SDA_LCD
27	TP_SCL_LCD	28	GND
29	GND	30	VCC_LCD_MIPI_2
31	VCC_LCD_MIPI_2	32	GND
33	GND	34	VCC_LEDK2
35	VCC_LEDK2	36
37		38	VCC_LEDA2
39	VCC_LEDA2	40	GND
41	GND

PCIe E Key

Pin	Name	Pin	Name
1	GND	2	VCC3V3_WF
3	USB3_DP	4	VCC3V3_WF
5	USB3_DM	6	WIFI_LED
7	GND	8	NC
9	NC	10	NC
11	NC	12	NC
13	NC	14	NC
15	NC	16	NC
17	NC	18	GND
19	NC	20	NC
21	NC	22	NC
23	NC	24	NC
33	NC	32	NC
35	PCIE20_0_TXP	34	NC
37	PCIE20_0_TXN	36	NC
39	GND	38	NC
41	PCIE20_0_RXP	40	NC
43	PCIE20_0_RXN	42	BT_REG_ON_H
45	GND	44	NC
47	PCIE20_0_REFCLKP	46	NC
49	PCIE20_0_REFCLKN	48	NC
51	GND	50	WIFIBT_32KIN_1T1R
53	PCIE20x1_2_CLKREQn_M0	52	PCIE20x1_2_PERSTn_M0
55	PCIE20x1_2_WAKEn_M0	54	HOST_WAKE_BT_H
57	GND	56	BT_REG_ON_H
59	NC	58	I2C2_SDA_M0
61	NC	60	I2C2_SCL_M0
63	GND	62	NC
65	NC	64	NC
67	NC	66	NC
69	GND	68	NC
71	NC	70	HOST_WAKE_BT_H
73	NC	72	VCC3V3_WF
75	GND	74	VCC3V3_WF

POE

Pin	Name	Pin	Name
1	PHY1_MDI0+	2	PHY1_MDI0-
3	PHY1_MDI1+	4	GND
5	GND	6	PHY1_MDI1-
7	PHY1_MDI2+	8	PHY1_MDI2-
9	PHY1_MDI3+	10	PHY1_MDI3-
11	PHY1_MDI0-	12	PHY1_MDI0+
13	GND	14	PHY1_MDI1+
15	PHY1_LED_G+	16	PHY1_G_LED-
17	PHY1_Y_LED+	18	PHY1_Y_LED-
19	GND

TF Card Slot

Pin	Name	Pin	Name
1	SDMMC_D2	2	SDMMC_D3
3	SDMMC_CMD	4	VCC_3V3_S3
5	SDMMC_CLK	6	GND
7	SDMMC_D0	8	SDMMC_D1
9	SDMMC_DET_H	10	GND
11	GND	12	GND
13	GND