HummingBoard Pulse/Ripple B2B Pin Mapping

Background

Below tables reference the HummingBoard Pulse rev 2.4 pin mapping description for all the i.MX8M SOM variants (i.MX8M,i.MX8M Mini,i.MX8M Plus). All the SOMs share a similar pinout, thus allowing them to be used on the same development platform.

J5001 connector

PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0		PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0
1	TP4	PMIC_ON	NC	NC		2	NC	NC	DSI_EN, GPIO1.IO[08]	DSI_EN, GPIO1.IO[08]
3	DIP-SWITCH	BOOT_MODE0	BOOT_MODE0	BOOT_MODE0		4	DSI-CON (J19) or DSI-HDMI	DSI_DN3	DSI_DN3	DSI_DN3
5	DIP-SWITCH	BOOT_MODE1	BOOT_MODE1	BOOT_MODE1		6	DSI-CON (J19) or DSI-HDMI	DSI_DP3	DSI_DP3	DSI_DP3
7	GND	GND	GND	GND		8	GND	GND	DSI_TS_Nint, GPIO1.IO[09]	GND
9	DSI-CON (J19) or DSI-HDMI	DSI_CKP	DSI_CKP	DSI_CKP		10	GND	GND	GND	GND
11	DSI-CON (J19) or DSI-HDMI	DSI_CKN	DSI_CKN	DSI_CKN		12	DSI-CON (J19) or DSI-HDMI	DSI_DN0	DSI_DN0	DSI_DN0
13	GND	GND	GND	GND		14	DSI-CON (J19) or DSI-HDMI	DSI_DP0	DSI_DP0	DSI_DP0
15	DSI-CON (J19) or DSI-HDMI	DSI_DN2	DSI_DN2	DSI_DN2		16	GND	GND	GND	GND
17	DSI-CON (J19) or DSI-HDMI	DSI_DP2	DSI_DP2	DSI_DP2		18	Mini-PCIe (J20, optional)	PCIE1_REF_CLKP_CN	NC	LVDS0_CLK_P
19	GND	GND	GND	GND		20	Mini-PCIe (J20, optional)	PCIE1_REF_CLKN_CN	NC	LVDS0_CLK_N
21	DSI-CON (J19) or DSI-HDMI	DSI_DN1	DSI_DN1	DSI_DN1		22	GND	GND	GND	GND
23	DSI-CON (J19) or DSI-HDMI	DSI_DP1	DSI_DP1	DSI_DP1		24	M.2_W_DIS#	PCIE_nPME, GPIO3.IO[5	PCIE_CLKREQ, GPIO1.IO[12]	M.2_W_DIS#, GPIO1.IO[13]
25	GND	GND	GND	GND		26	Mini-PCIe_W_DIS#	PCIe_nWAKE, GPIO3.IO[12]	PCIe_Nwake, GPIO2.IO[20]	Mini-PCIe_W_DIS#, GPIO1.IO[05]
27	M.2_WAKW_ON_LAN (PCIe)	PWM1_OUT, GPIO1.IO[1]	DSI_BL_PWM,GPIO1.IO[01]	M.2_WAKW_ON_LAN,GPIO1.IO[12]		28	USB1_PWR_EN	USB1_SS_SEL, GPIO3.IO[15]	PCIe_nRST, GPIO4.IO[21]	USB1_PWR_EN, GPIO1.IO[15]
29	MIKROBUS (J10-4)	UART3_TXD, GPIO5.IO[27]	UART1_TXD, GPIO5.IO[23]	UART3_TXD, GPIO5.IO[7]		30	GND	GND	GND	GND
31	MIKROBUS (J10-3)	UART3_RXD, GPIO5.IO[26]	UART1_RXD, GPIO5.IO[22]	UART3_RXD, GPIO5.IO[6]		32	Mini-PCIe (J20, optional)	PCIE1_TXP_C	NC	LVDS0_TX2_N
33	GND	GND	GND	GND		34	Mini-PCIe (J20, optional)	PCIE1_TXN_C	NC	LVDS0_TX2_P
35	NC	NC	PCIe_nDIS, GPIO1.IO[05]	NC		36	GND	GND	GND	GND
37	MIKROBUS (J10-1)	UART3_CTS, GPIO5.IO[8]	UART1_CTS, GPIO5.IO[26]	UART3_CTS, GPIO5.IO[8]		38	Mini-PCIe (J20, optional)	PCIE1_RXP_C	NC	LVDS0_TX3_N
39	MIKROBUS (J10-2)	UART3_RTS, GPIO5.IO[9]	UART1_RTS, GPIO5.IO[27]	UART3_RTS, GPIO5.IO[9]		40	Mini-PCIe (J20, optional)	PCIE1_RXN_C	NC	LVDS0_TX3_P
41	HEADER, DIP-SW	SAI1_TXD2, GPIO4.IO[14] (BT_CFG10)	SAI1_TXD2, GPIO4.IO[14] (BT_CFG10)	SAI2_TXC, GPIO4.IO[25]		42	GND	GND	GND	GND
43	DSI_TS_nINT (DSI-HDMI)	DSI_TS_nINT, GPIO5.IO[7]	CSI_PWDN, GPIO1.IO[07]	SAI2_MCLK, GPIO4.IO[27]		44	LED (D34)	UART2_RXD, GPIO5.IO[24]	UART3_RXD, GPIO5.IO[6]	SAI2_RXC, GPIO4.IO[22] (UART1_RX)
45	NC	NC	MIPI_CSI0_MCLK_OUT, GPIO1.IO[14]	SAI2_TXD, GPIO4.IO[26]		46	LED (D33)	UART2_TXD, GPIO5.IO[25]	UART3_TXD, GPIO5.IO[7]	SAI2_RXFS, GPIO4.IO[21] (UART1_TX)
47	GND	GND	GND	GND		48	LED (D32)	UART2_CTS, GPIO5.IO[28]	UART3_CTS, GPIO5.IO[8]	SAI2_RXD, GPIO4.IO[23] (UART1_CTS)
49	NC	NC	MIPI_CSI0_RST#, GPIO1.IO[06]	LVDS0_TX1_N		50	LED (D31)	UART2_RTS, GPIO5.IO[29]	UART3_RTS, GPIO5.IO[9]	SAI2_TXFS, GPIO4.IO[24] (UART1_RTS)
51	HEADER, DIP-SW	SAI1_TXD4, GPIO4.IO[16] (BT_CFG12)	SAI1_TXD4, GPIO4.IO[16] (BT_CFG12)	LVDS0_TX1_P		52	GND	GND	GND	GND
53	WIFI_DP (HUB to IMX8M)	WIFI_USB_DP	I2C4_SCL	LVDS0_TX0_N		54	CSI-CON(CON7)	CSI_P1_DN0	CSI_DN0	CSI_DN0
55	WIFI_DN (HUB to IMX8M)	WIFI_USB_DN	I2C4_SDA	LVDS0_TX0_P		56	CSI-CON(CON7)	CSI_P1_DP0	CSI_DP0	CSI_DP0
57	GND	GND	GND	GND		58	GND	GND	GND	GND
59	CSI-CON(CON7)	CSI_P1_CKP	CSI_CKP	CSI_CKP		60	CSI-CON(CON7)	CSI_P1_DP2	CSI_DP2	CSI_DP2
61	CSI-CON(CON7)	CSI_P1_CKN	CSI_CKN	CSI_CKN		62	CSI-CON(CON7)	CSI_P1_DN2	CSI_DN2	CSI_DN2
63	GND	GND	GND	GND		64	GND	GND	GND	GND
65	CSI-CON(CON7)	CSI_P1_DP3	CSI_DP3	CSI_DP3		66	CSI-CON(CON7)	CSI_P1_DP1	CSI_DP1	CSI_DP1
67	CSI-CON(CON7)	CSI_P1_DN3	CSI_DP3	CSI_DP3		68	CSI-CON(CON7)	CSI_P1_DN1	CSI_DN1	CSI_DN1
69	GND	GND	GND	GND		70	GND	GND	GND	GND

J7 connector

PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0		PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0
1	ETH_NIC (Intel, U6)	PCIE2_REF_CLKP_CN	PCIEC_CLKN (Optional)	PCIEC_CLKN		2	ETH_NIC (Intel, U6)	PCIE2_RXN	PCIEC_RXN (Optional)	PCIE_RXN
3	ETH_NIC (Intel, U6)	PCIE2_REF_CLKN_CN	PCIEC_CLKP (Optional)	PCIEC_CLKP		4	ETH_NIC (Intel, U6)	PCIE2_RXP	PCIEC_RXP (Optional)	PCIE_RXP
5	GND	GND	GND	GND		6	GND	GND	GND	GND
7	ETH_NIC (Intel, U6)	PCIE2_TXN	PCIEC_TXN (Optional)	PCIEC_TXN		8	HEADER (CON4)	SAI3_MCLK, GPIO5.IO[2]	SAI3_MCLK, GPIO5.IO[2]	NC
9	ETH_NIC (Intel, U6)	PCIE2_TXP	PCIEC_TXP (Optional)	PCIEC_TXP		10	HEADER (CON4)	SAI3_RXC, GPIO4.IO[29]	SAI3_RXC, GPIO4.IO[29]	Mini-PCIe_PREST#, GPIO1.IO[01]
11	GND	GND	GND	GND		12	HEADER (CON4)	SAI1_TXC, GPIO4.IO[11]	SAI1_TXC, GPIO4.IO[11]	SPDIF_RX, GPIO5.IO[4]
13	M.2_RESET#	SAI3_TXFS, GPIO4.IO[31]	SAI3_TXFS, GPIO4.IO[31]	M.2_RESET#, GPIO1.IO[06]		14	POE_AT_DET	SAI3_TXC GPIO5.IO[0]	SAI3_TXC, GPIO5.IO[0]	POE_AT_DET, GPIO1.IO[09]
15	RTC_CLKO (RTC Int.)	SAI3_RXFS, GPIO4.IO[28]	SAI3_RXFS, GPIO4.IO[28]	NC		16	DSI-CON (J19) or DSI-HDMI	SPDIF_TX, GPIO5.IO[3]	SPDIF_TX, GPIO5.IO[3]	SPDIF_TX, GPIO5.IO[3]
17	GND	GND	GND	GND		18	M.2_PCIe_3V3_EN	IR_CAP, GPIO1.IO[12]	IR_CAP, GPIO1.IO[13]	M.2_PCIe_3V3_EN, GPIO1.IO[10]
19	HDMI CON (J1)	HDMI_TXP2	NC	HDMI_TXP2		20	HEADER (CON4)	SAI1_TXD7, GPIO4.IO[19] (BT_CFG15)	SAI1_TXD7, GPIO4.IO[19] (BT_CFG15)	SPDIF_EXT_CLK, GPIO5.IO[5]
21	HDMI CON (J1)	HDMI_TXN2	CLKOUT1	HDMI_TXN2		22	HEADER (CON4)	SAI1_TXD0, GPIO4.IO[12] (BT_CFG8)	SAI1_TXD0, GPIO4.IO[12] (BT_CFG8)	NC
23	GND	GND	CLKOUT2	GND		24	HEADER (CON4)	SAI1_TXD1, GPIO4.IO[13] (BT_CFG9)	SAI1_TXD1, GPIO4.IO[13] (BT_CFG9)	DSI_EN, GPIO1.IO[08]
25	HDMI CON (J1)	HDMI_TXP1	NC	HDMI_TXP1		26	USB-HUB_RST#	SAI3_RXD, GPIO4.IO[30]	SAI3_RXD, GPIO4.IO[30]	USB-HUB_RST#, GPIO1.IO[15]
27	HDMI CON (J1)	HDMI_TXN1	NC	HDMI_TXN1		28	HEADER (CON4)	SAI1_TXD3, GPIO4.IO[15] (BT_CFG11)	SAI1_TXD6, GPIO4.IO[18] (BT_CFG14)	QSPIA_DATA0, GPIO3.IO[6]
29	GND	GND	NC	GND		30	HEADER (CON4)	SAI1_TXFS, GPIO4.IO[10]	SAI1_TXFS, GPIO4.IO[10]	QSPIA_DATA1, GPIO3.IO[7]
31	HDMI CON (J1)	HDMI_TXP0	NC	HDMI_TXP0		32	TP6	nWDOG, GPIO1.IO[2]	SAI3_RXC, GPIO4.IO[29]	QSPIA_DATA2, GPIO3.IO[8]
33	HDMI CON (J1)	HDMI_TXN0	NC	HDMI_TXN0		34	NC	NC	SYS_STATUS, GPIO3.IO[16]	QSPIA_DATA3, GPIO3.IO[9]
35	GND	GND	NC	GND		36	HEADER (CON4)	SAI1_MCLK, GPIO4.IO[20]	SAI1_MCLK, GPIO4.IO[20]	QSPIA_Nss0, GPIO3.IO[1]
37	HDMI CON (J1)	HDMI_CLKP	NC	HDMI_CLKP		38	CSI-CON(CON7)	CLKO2, GPIO1.IO[15]	UART2_CTS, GPIO5.IO[28]	UART4_TXD, GPIO5.IO[29]
39	HDMI CON (J1)	HDMI_CLKN	CLKIN1	HDMI_CLKN		40	NC	NC	NC	QSPIA_SCLK, GPIO3.IO[0]
41	GND	GND	GND	GND		42	GND	GND	GND	GND
43	HDMI CON (J1)	HDMI_CEC	CLKIN2	HDMI_CEC		44	LED (D30)	GPIO5.IO[21]	UART2_RTS, GPIO5.IO[29]	UART4_RXD, GPIO5.IO[28]
45	HDMI CON (J1)	HDMI_DDC_SCL	NC	HDMI_DDC_SCL		46	HEADER (CON4)	SAI1_RXD7, GPIO4.IO[9] (BT_CFG7)	SAI1_RXD7, GPIO4.IO[9] (BT_CFG7)	MB-RST, GPIO1.IO[0]
47	HDMI CON (J1)	HDMI_DDC_SDA	NC	HDMI_DDC_SDA		48	GND	GND	GND	GND
49	HDMI CON (J1)	HDMI_HPD	TEST_MODE	HDMI_HPD		50	HEADER (CON4)	SAI1_RXD5, GPIO4.IO[7] (BT_CFG5)	SAI1_RXD5, GPIO4.IO[7] (BT_CFG5)	USB2_ID
51	AUDIO CODEC	SAI2_TXC, GPIO4.IO[25]	SAI2_TXC, GPIO4.IO[25]	SAI3_TXC,GPIO5.IO[0]		52	TERMINAL_TX	UART1_TXD (Terminal), GPIO5.IO[23]	UART2_TXD (Terminal), GPIO5.IO[25]	UART2_TXD (Terminal), GPIO5.IO[25]
53	AUDIO CODEC	SAI2_TXD, GPIO4.IO[26]	SAI2_TXD, GPIO4.IO[26]	SAI3_TXD, GPIO5.IO[1]		54	TERMINAL_RX	UART1_RXD (Terminal), GPIO5.IO[22]	UART2_RXD (Terminal), GPIO5.IO[24]	UART2_RXD (Terminal), GPIO5.IO[24]
55	AUDIO CODEC	SAI2_TXFS, GPIO4.IO[24]	SAI2_TXFS, GPIO4.IO[24]	SAI3_TXFS, GPIO4.IO[31]		56	NC	USB1_ID	USB1_ID	USB1_ID
57	AUDIO CODEC	SAI2_RXD, GPIO4.IO[23]	SAI2_RXD, GPIO4.IO[23]	SAI3_RXD, GPIO4.IO[30]		58	GND	GND	GND	GND
59	AUDIO CODEC	SAI2_MCLK, GPIO4.IO[27]	SAI2_MCLK, GPIO4.IO[27]	SAI3_MCLK, GPIO5.IO[2]		60	USB-HUB	USB2_RXP	NC	USB2_RXP
61	GND	GND	GND	GND		62	USB-HUB	USB2_RXN	NC	USB2_RXN
63	HEADER (CON4)	SAI1_RXD6, GPIO4.IO[8] (BT_CFG6)	SAI1_RXD6, GPIO4.IO[8] (BT_CFG6)	SAI3_RXC, GPIO4.IO[29]		64	GND	GND	GND	GND
65	RESET-B	SYS_nRST	SYS_nRST	SYS_nRST		66	USB-HUB	USB2_TXN	NC	USB2_TXN
67	HEADER (CON4)	SAI1_RXD4, GPIO4.IO[6] (BT_CFG4)	SAI1_RXD4, GPIO4.IO[6] (BT_CFG4)	ETH1_TRX3_P (Second ETH)		68	USB-HUB	USB2_TXP	NC	USB2_TXP
69	HEADER (CON4)	SAI1_RXC, GPIO4.IO[1]	SAI1_RXC, GPIO4.IO[1]	ETH1_TRX3_N (Second ETH)		70	GND	GND	GND	GND
71	HEADER (CON4)	SAI1_RXFS,	SAI1_RXFS, GPIO4.IO[0]	ETH1_TRX2_P (Second ETH)		72	HEADER (CON4)	SAI1_RXD2, GPIO4.IO[4] (BT_CFG2)	SAI1_RXD2, GPIO4.IO[4] (BT_CFG2)	ETH1_TRX1_P (Second ETH)
73	MICRO-SD	SD2_VSELECT, GPIO1.IO[4]	USB2_ID (Pull-Up, 3V3)	ETH1_TRX2_N (Second ETH)		74	HEADER (CON4)	SAI1_RXD3, GPIO4.IO[5] (BT_CFG3)	SAI1_RXD3, GPIO4.IO[5] (BT_CFG3)	ETH1_TRX1_N (Second ETH)
75	GND	GND	GND	GND		76	GND	GND	GND	GND
77	HDMI CON (J1)	HDMI_AUXP	NC	EARC_N_HPD		78	HEADER (CON4)	SAI1_RXD0, GPIO4.IO[2] (BT_CFG0)	SAI1_RXD0, GPIO4.IO[2] (BT_CFG0)	ETH1_TRX0_P (Second ETH)
79	HDMI CON (J1)	HDMI_AUXN	NC	EARC_P_UTIL		80	HEADER (CON4)	SAI1_RXD1, GPIO4.IO[3] (BT_CFG1)	SAI1_RXD1, GPIO4.IO[3] (BT_CFG1)	ETH1_TRX0_N (Second ETH)

J9 connector

PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0		PIN	HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0
1	ETH-POE	MDI_TRXN3	MDI_TRXN3	MDI_TRXN3		2	GND	GND	GND	GND
3	ETH-POE	MDI_TRXP3	MDI_TRXP3	MDI_TRXP3		4	USB-TYPE-A	USB1_TXP	NC	USB1_TXP
5	GND	GND	GND	GND		6	USB-TYPE-A	USB1_TXN	NC	USB1_TXN
7	ETH-POE	MDI_TRXN2	MDI_TRXN2	MDI_TRXN2		8	GND	GND	GND	GND
9	ETH-POE	MDI_TRXP2	MDI_TRXP2	MDI_TRXP2		10	USB-TYPE-A	USB1_RXP	NC	USB1_RXP
11	GND	GND	GND	GND		12	USB-TYPE-A	USB1_RXN	NC	USB1_RXN
13	ETH-POE	MDI_TRXN1	MDI_TRXN1	MDI_TRXN1		14	GND	GND	GND
15	ETH-POE	MDI_TRXP1	MDI_TRXP1	MDI_TRXP1		16	USB-TYPE-A	USB1_DP	USB1_DP	USB1_DP
17	GND	GND	GND	GND		18	USB-TYPE-A	USB1_DN	USB1_DN	USB1_DN
19	ETH-POE	MDI_TRXN0	MDI_TRXN0	MDI_TRXN0		20	GND	GND	GND	GND
21	ETH-POE	MDI_TRXP0	MDI_TRXP0	MDI_TRXP0		22	USB-HUB	USB2_DP	USB2_DP	USB2_DP
23	GND	GND	GND	GND		24	USB-HUB	USB2_DN	USB2_DN	USB2_DN
25	ETH-LED	LED_10_100_LED_1000	LED_10_100_LED_1000	LED_0/PHY_CFG0		26	GND	GND	GND	GND
27	ETH-LED	LED_ACT	LED_ACT	LED1_0/PHY_CFG0		28	M.2_GPS_EN#	USB_H1_PWR_EN, GPIO3.IO[4]	SAI5_RXFS,GPIO3.IO[19]	M.2_GPS_EN#, GPIO1.IO[07]
29	HEADER (CON4)	PPS (Eth PHY)	PPS (Eth PHY)	NC		30	J9-59 (BT_FW_FLASH, J9-59)	USB_OTG_PWR_EN, GPIO3.IO[2]	SPDIF_EXT_CLK, GPIO5.IO[05]	NC
31	MIPI-DSI, ETH-NIC, DSI-CON, CSI-CON, RTC, MIKROBUS	I2C3_SCL	I2C3_SCL	I2C3_SCL		32	MIKROBUS (J8-3)	ECSPI2_SS0, GPIO5.IO[13]	ECSPI2_SS0, GPIO5.IO[13] (UART4_RTS)	ECSPI2_SS0, GPIO5.IO[13]
33	MIPI-DSI, ETH-NIC, DSI-CON, CSI-CON, RTC, MIKROBUS	I2C3_SDA	I2C3_SDA	I2C3_SDA		34	CSI-CON (J19) or DSI-HDMI	GPIO5.IO[6]	PDM_DATA1, GPIO3.IO[22]	NC
35	GND	GND	GND	GND		36	GND	GND	GND	GND
37	USB_HUB_CH1_PWR_EN	CSI_nRST, GPIO1.IO[6]	TCPC_Nint1, GPIO2.IO[11]	USB_HUB_CH1_PWR_EN, GPIO1.IO[14]		38	MICRO-SD	SD2_CLK, GPIO2.IO[13]	SD2_CLK, GPIO2.IO[13]	SD2_CLK, GPIO2.IO[13]
39	J9-55 (BT_FW_FLASH, J9-55)	AUD_nMUTE, GPIO1.IO[8]	PDM_DATA0, GPIO3.IO[21]	NC		40	MICRO-SD	SD2_CMD, GPIO2.IO[14]	SD2_CMD, GPIO2.IO[14]	SD2_CMD, GPIO2.IO[14]
41	ETH-NIC RST# (Intel, U6)	CLKO_25MHz, GPIO3.IO[11]	PDM_CLK, GPIO3.IO[20]	NC		42	MICRO-SD	SD2_DATA0, GPIO2.IO[15]	SD2_DATA0, GPIO2.IO[15]	SD2_DATA0, GPIO2.IO[15]
43	USB1_VBUS	USB1_VBUS	USB1_VBUS	USB1_VBUS_5V		44	MICRO-SD	SD2_DATA1, GPIO2.IO[16]	SD2_DATA1, GPIO2.IO[16]	SD2_DATA1, GPIO2.IO[16]
45	MIKROBUS (J8-5)	ECSPI2_MISO, GPIO5.IO[12]	ECSPI2_MISO, GPIO5.IO[12] (UART4_CTS)	ECSPI2_MISO, GPIO5.IO[12]		46	MICRO-SD	SD2_DATA2, GPIO2.IO[17]	SD2_DATA2, GPIO2.IO[17]	SD2_DATA2, GPIO2.IO[17]
47	MIKROBUS (J8-6)	ECSPI2_MOSI, GPIO5.IO[11]	ECSPI2_MOSI, GPIO5.IO[11] (UART4_TXD)	ECSPI2_MOSI,GPIO5.IO[11]		48	MICRO-SD	SD2_DATA3, GPIO2.IO[18]	SD2_DATA3, GPIO2.IO[18]	SD2_DATA3, GPIO2.IO[18]
49	MIKROBUS (J8-4)	ECSPI2_SCLK, GPIO5.IO[10]	ECSPI2_SCLK, GPIO5.IO[10] (UART4_RXD)	ECSPI2_SCLK, GPIO5.IO[10]		50	MICRO-SD	SD2_NCD, GPIO2.IO[12]	SD2_NCD, GPIO2.IO[12]	SD2_NCD, GPIO2.IO[12]
51	AUD_CODEC, USB-TYPEC, USB-HUB	I2C2_SDA	I2C2_SDA	I2C2_SDA		52	USB-HUB	USB2_VBUS	USB2_VBUS	USB2_VBUS_3V3
53	AUD_CODEC, USB-TYPEC, USB-HUB	I2C2_SCL	I2C2_SCL	I2C2_SCL		54	HEADER, DIP-SW	SAI1_TXD5,GPIO4.IO[17] (BT_CFG13)	SAI1_TXD5, GPIO4.IO[17] (BT_CFG13)	SAI5_MCLK, GPIO3.IO[25]
55	BT-FW_FLASH (J9-39)	SWDCLK1 (BT Flash)	NC	SAI5_RXC, GPIO3.IO[20]		56	NC	NC	SAI5_MCLK, GPIO3.IO[25]	SAI5_RXD3, GPIO3.IO[24]
57	HEADER (CON4)	CLK_25M (Eth PHY)	CLK_25M (Eth PHY)	SAI5_RXD2, GPIO3.IO[23]		58	NC	NC	PDM_DATA2, GPIO3.IO[23]	NC
59	BT-FW_FLASH (J9-30)	SWDIO1 (BT Flash)	NC	NC		60	NC	NC	PDM_DATA3, GPIO3.IO[24]	WDOG_B, GPIO1.IO[02]
61	MICRO-SD	NVCC_SD2	SPDIF_RX, GPIO5.IO[4]	NC		62	PUSH-B	ONOFF	ONOFF	ONOFF
63	3V3_IN	3V3_OUT	3V3_OUT	3V3_OUT		64	HEADER, DIP-SW	SAI1_TXD6, GPIO4.IO[18] (BT_CFG14)	SAI1_TXD3, GPIO4.IO[15] (BT_CFG11)	NC
65	3V3_IN	3V3_OUT	3V3_OUT	3V3_OUT		66	NC	NC	SAI3_TXD, GPIO5.IO[1]	VSD_3V3 (uSD power for next HBP)
67	3V3_IN	3V3_OUT	3V3_OUT	3V3_OUT		68	MICRO-SD	PWM2_OUT, GPIO1.IO[13]	SD2_nRST, GPIO2.IO[19]	SD2_RESET_B, GPIO2.IO[19]
69	3V3_IN	3V3_OUT	NC	3V3_OUT		70	GND	GND	GND	GND
71	VIN_5V0	VIN_5V0	VIN_5V0	VIN_5V0		72	GND	GND	GND	GND
73	VIN_5V0	VIN_5V0	VIN_5V0	VIN_5V0		74	GND	GND	GND	GND
75	VIN_5V0	VIN_5V0	VIN_5V0	VIN_5V0		76	GND	GND	GND	GND
77	VIN_5V0	VIN_5V0	VIN_5V0	VIN_5V0		78	GND	GND	GND	GND
79	VIN_5V0	VIN_5V0	VIN_5V0	VIN_5V0		80	GND	GND	GND	GND

mikroBUS connector

HummingBoard Pulse 2.4	IMX8M rev 2.0	IMX8M Mini rev 1.2	IMX8M Plus rev 1.0
MIKROBUS (J8-2)	SAI2_RXD, GPIO4.IO[23]	SAI2_RXD, GPIO4.IO[23]	SAI3_RXD, GPIO4.IO[30]
MIKROBUS (J8-3)	ECSPI2_SS0, GPIO5.IO[13]	ECSPI2_SS0, GPIO5.IO[13] (UART4_RTS)	ECSPI2_SS0, GPIO5.IO[13]
MIKROBUS (J8-4)	ECSPI2_SCLK, GPIO5.IO[10]	ECSPI2_SCLK, GPIO5.IO[10] (UART4_RXD)	ECSPI2_SCLK, GPIO5.IO[10]
MIKROBUS (J8-5)	ECSPI2_MISO, GPIO5.IO[12]	ECSPI2_MISO, GPIO5.IO[12] (UART4_CTS)	ECSPI2_MISO, GPIO5.IO[12]
MIKROBUS (J8-6)	ECSPI2_MOSI, GPIO5.IO[11]	ECSPI2_MOSI, GPIO5.IO[11] (UART4_TXD)	ECSPI2_MOSI,GPIO5.IO[11]
MIKROBUS (J10-1)	UART3_CTS, GPIO5.IO[8]	UART1_CTS, GPIO5.IO[26]	UART3_CTS, GPIO5.IO[8]
MIKROBUS (J10-2)	UART3_RTS, GPIO5.IO[9]	UART1_RTS, GPIO5.IO[27]	UART3_RTS, GPIO5.IO[9]
MIKROBUS (J10-3)	UART3_RXD, GPIO5.IO[26]	UART1_RXD, GPIO5.IO[22]	UART3_RXD, GPIO5.IO[6]
MIKROBUS (J10-4)	UART3_TXD, GPIO5.IO[27]	UART1_TXD, GPIO5.IO[23]	UART3_TXD, GPIO5.IO[7]
MIKROBUS (J10-5)	I2C3_SCL	I2C3_SCL	I2C3_SCL
MIKROBUS (J10-6)	I2C3_SDA	I2C3_SDA	I2C3_SDA