Pin Definition

The i6818 core board uses dual 100-pin board-to-board connectors and measures 50mm x 40mm. i6818CV3 is pin-compatible with i4418CV3.

Core Board Pin Definition CON1

Pin No.	Signal	Pin No.	Signal
1	VBAT	51	GPIOC7
2	DCIN	52	UARTRXD2
3	VBAT	53	MCU_I2S_MCLK
4	DCIN	54	UARTTXD0
5	VBAT	55	MCU_BACKLIGHT_PWM
6	DCIN	56	UARTRXD0
7	VBAT	57	MCU_SPITXD0
8	DCIN	58	UARTRXD1
9	VBAT	59	MCU_SPICLK0
10	GND	60	UARTTXD1
11	VBAT_SYS	61	MCU_SPIFRM0
12	GND	62	GPIOB8
13	VBAT_SYS	63	MCU_I2S_BCK
14	GND	64	GPIOA28
15	VBAT_SYS	65	GPIOC11
16	GND	66	MCU_I2S_LRCK
17	VBAT_SYS	67	GPIOC12
18	GND	68	MCU_SPIRXD0
19	MCU_SD0	69	MCU_VG_EN
20	MCU_SD1	70	MCU_SDA_1
21	MCU_SD1_D3	71	IR
22	MCU_SD0_D3	72	MCU_SCL_1
23	MCU_SD1_D2	73	CAM_RST
24	MCU_SD0_CMD	74	MCU_I2S_SDIN
25	MCU_SD1_D1	75	CAM_PN
26	MCU_SD0_D1	76	MCU_I2S_SDOUT
27	MCU_SD1_D0	77	CAM_PD
28	MCU_SD0_CD	78	PWM2
29	MCU_SD1_CD	79	CAM_D7
30	MCU_SD0_D2	80	SPDIF_RX
31	MCU_SD1_CLK	81	CAM_V
32	MCU_SD0_CLK	82	VCC1P8_RTC
33	MCU_SD1_CMD	83	CAM_D3
34	MCU_SD0_D0	84	MCU_NRESETOUT
35	MCU_SEN0_INT	85	CAM_H
36	MCU_SCL_2	86	MCU_PWRKEY
37	MCU_HP_DET	87	CAM_CLK
38	MCU_SDA_0	88	ADC1
39	MCU_TOUCH_INT	89	CAM_D6
40	MCU_SCL_0	90	MCU_NRESETIN
41	MCU_KEY_VOLUP	91	CAM_D5
42	MCU_OTG_PWRON	92	ADC0
43	MCU_KEY_VOLDN	93	CAM_D2
44	MCU_SDA_2	94	PHY_RST
45	SPICLK2	95	CAM_D0
46	UARTTXD3	96	GMAC_MDIO
47	SPDIF_TX	97	CAM_D4
48	UARTRXD3	98	PHY_INT
49	GPIOC8	99	CAM_D1
50	UARTTXD2	100	GMAC_TXCLK

Core Board Pin Definition CON4

Pin No.	Signal	Pin No.	Signal
1	DC5V_OTG	51	LCD_B4
2	VCC3P3_SYS	52	MCU_LVDS_Y1M
3	DC5V_OTG	53	LCD_HSYNC
4	VCC3P3_SYS	54	MCU_LVDS_Y1P
5	GPIOB9	55	LCD_VSYNC
6	GND	56	MCU_LVDS_Y0M
7	MCU_CAM1_D7	57	LCD_G0
8	MCU_USB_HOST_D-	58	MCU_LVDS_Y0P
9	MCU_CAM1_D4	59	LCD_B0
10	MCU_USB_HOST_D+	60	GND
11	MCU_CAM1_D3	61	LCD_DE
12	MCU_USB+	62	MIPIDSI_DP3
13	MCU_CAM1_D1	63	LCD_G5
14	MCU_USB-	64	MIPIDSI_DN3
15	MCU_CAM1_D2	65	LCD_B1
16	MCU_USB_ID	66	MIPIDSI_DP2
17	MCU_CAM1_D0	67	LCD_B2
18	MCU_HDMI_CEC	68	MIPIDSI_DN2
19	MCU_CAM1_MCLK	69	LCD_B5
20	MCU_HDMI_HPD	70	MIPIDSI_DP1
21	LCD_G3	71	LCD_B3
22	MCU_HDMI_TXCP	72	MIPIDSI_DN1
23	LCD_G7	73	LCD_B7
24	MCU_HDMI_TXCN	74	MIPIDSI_DP0
25	LCD_G2	75	LCD_G4
26	MCU_HDMI_TX0P	76	MIPIDSI_DN0
27	LCD_G6	77	GMAC_RXCLK
28	MCU_HDMI_TX0N	78	MIPIDSI_DPCLK
29	LCD_R0	79	GMAC_RXCLK
30	MCU_HDMI_TX1P	80	MIPIDSI_DNCLK
31	LCD_R3	81	GMAC_RXD2
32	MCU_HDMI_TX1N	82	MIPICSI_DN3
33	LCD_R1	83	GMAC_RXD3
34	MCU_HDMI_TX2P	84	MIPICSI_DP3
35	LCD_R2	85	GMAC_RXD1
36	MCU_HDMI_TX2N	86	MIPICSI_DN2
37	LCD_R4	87	GMAC_RXD0
38	GND	88	MIPICSI_DP2
39	LCD_CLK	89	GMAC_MDC
40	MCU_LVDS_Y3M	90	MIPICSI_DN1
41	LCD_R7	91	GMAC_TXEN
42	MCU_LVDS_Y3P	92	MIPICSI_DP1
43	LCD_R5	93	GMAC_TXD3
44	MCU_LVDS_CLKM	94	MIPICSI_DN0
45	LCD_G1	95	GMAC_TXD1
46	MCU_LVDS_CLKP	96	MIPICSI_DP0
47	LCD_R6	97	GMAC_TXD2
48	MCU_LVDS_Y2M	98	MIPICSI_DNCLK
49	LCD_B6	99	GMAC_TXD0
50	MCU_LVDS_Y2P	100	MIPICSI_DPCLK

J32 DEBUG Expansion Port

Pin No.	Signal	Pin No.	Signal
1	VCC3P3_SYS	6	UARTTXD4
2	MCU_SCL_0	7	PWM2
3	MCU_SDA_0	8	UARTRXD0
4	GND	9	UARTTXD0
5	UARTRXD4

J31 GPIO Expansion Port

Pin No.	Signal	Pin No.	Signal
1	VCC3P3_SYS	6	UARTTXD3_0
2	UARTRXD1	7	GPIOC7
3	UARTTXD1	8	UARTRXD2_0
4	GND	9	UARTTXD2_0
5	UARTRXD3_0