The Emcraft i.MX 8M Starter Kit provides an RPi-compatible expansion header using a 40 Positions 0.100" (2.54mm) Through Hole Header.

The RPi-compatible expansion header using the following board connector:

• IMX8M-SOM-BSB development board: Sullins PRPC020DAAN-RC(DigiKey PN# S2011EC-20-ND)

The board connectors have the following signal pin-out:

RPi Pin	Name	Alt0	Alt1	Alt2	Alt5
1	3V3
3	I2C3_SDA	i2c3.SDA	pwm3.OUT	gpt3.CLK	gpio5.IO[19]
5	I2C3_SCL	i2c3.SCL	pwm4.OUT	gpt2.CLK	gpio5.IO[18]
7	PWM1	spdif1.EXT_CLK	pwm1.OUT		gpio5.IO[5]
9	GND
11	GPIO3_IO08	rawnand.DATA02	qspi.A_DATA[2]		gpio3.IO[8]
13	GPIO3_IO09	rawnand.DATA03	qspi.A_DATA[3]		gpio3.IO[9]
15	GPIO3_IO04	rawnand.CE3_B	qspi.B_SS1_B		gpio3.IO[4]
17	3V3
19	ECSPI1_MOSI	ecspi1.MOSI	uart3.TX		gpio5.IO[7]
21	ECSPI1_MISO	ecspi1.MISO	uart3.CTS_B		gpio5.IO[8]
23	ECSPI1_SCLK	ecspi1.SCLK	uart3.RX		gpio5.IO[6]
25	GND
27	NC
29	I2C4_SDA	i2c4.SDA	pwm1.OUT	pcie2.CLKREQ_B	gpio5.IO[21]
31	NC
33	PWM3	spdif1.OUT	pwm3.OUT		gpio5.IO[3]
35	PCM_FS	sai1.RX_DATA[6]	sai6.TX_SYNC	sai6.RX_SYNC	gpio4.IO[8]
37	NC
39	GND
2	5V
4	5V
6	GND
8	UART3_TXD	uart3.TX	uart1.RTS_B		gpio5.IO[27]
10	UART3_RXD	uart3.RX	uart1.CTS_B		gpio5.IO[26]
12	PCM_BCLK	sai1.RX_DATA[4]	sai6.TX_BCLK	sai6.RX_BCLK	gpio4.IO[6]
14	GND
16	I2C4_SCL	i2c4.SCL	pwm2.OUT	pcie1.CLKREQ_B	gpio5.IO[20]
18	GPIO3_IO20	sai5.RX_BCLK	sai1.TX_DATA[1]		gpio3.IO[20]
20	GND
22	GPIO3_IO25	sai5.MCLK	sai1.TX_BCLK	sai4.MCLK	gpio3.IO[25]
24	ECSPI1_SS0	ecspi1.SS0	uart3.RTS_B		gpio5.IO[9]
26	ECSPI1_SS1	rawnand.CE1_B	qspi.A_SS1_B		gpio3.IO[2]
28	NC
30	GND
32	PWM2	spdif1.IN	pwm2.OUT		gpio5.IO[4]
34	GND
36	NC
38	PCM_DIN	sai1.RX_DATA[5]	sai6.TX_DATA[0]	sai6.RX_DATA[0]	gpio4.IO[7]
40	PCM_DOUT	sai1.TX_DATA[5]	sai6.RX_DATA[0]	sai6.TX_DATA[0]	gpio4.IO[17]