Technical Details for CORE4418

Pin Define for CORE4412

J1 J3
Pin Define Pin Define
1 LCD_PWM 28 LCD_CLK
2 LCD_EN 29 LCD_DE
3 LCD_RESET 30 LCD_HSYNC
4 LCD_R0 31 LCD_VSYNC
5 LCD_R1 32 GND
6 LCD_R2 33 MCU_SDA_0
7 LCD_R3 34 MCU_SCL_0
8 LCD_R4 35 MCU_HDMI_CEC
9 LCD_R5 36 MCU_HDMI_HPD
10 LCD_R6 37 MCU_HDMI_TXCN
11 LCD_R7 38 MCU_HDMI_TXCP
12 LCD_G0 39 MCU_HDMI_TX0N
13 LCD_G1 40 MCU_HDMI_TX0P
14 LCD_G2 41 MCU_HDMI_TX1N
15 LCD_G3 42 MCU_HDMI_TX1P
16 LCD_G4 43 MCU_HDMI_TX2N
17 LCD_G5 44 MCU_HDMI_TX2P
18 LCD_G6 45 GND
19 LCD_G7 46 MCU_LVDS_CLKM
20 LCD_B0 47 MCU_LVDS_CLKM
21 LCD_B1 48 MCU_LVDS_Y3M
22 LCD_B2 49 MCU_LVDS_Y3P
23 LCD_B3 50 MCU_LVDS_Y2M
24 LCD_B4 51 MCU_LVDS_Y2P
25 LCD_B5 52 MCU_LVDS_Y1M
26 LCD_B6 53 MCU_LVDS_Y1P
27 LCD_B7 54 MCU_LVDS_Y0M
Pin Define Pin Define
91 CAM_PD 118 UARTTXD1
92 GPIOB8 119 UARTRXD0
93 MCU_CAM1_D7 120 UARTTXD0
94 MCU_CAM1_D3 121 GND
95 MCU_CAM1_D4 122 VBAT
96 MCU_CAM1_D2 123 VBAT
97 MCU_CAM1_D1 124 5V_IN
98 MCU_CAM1_D0 125 5V_IN
99 MCU_I2S_MCLK 126 VBAT_SYS
100 MCU_I2S_BCK 127 GND
101 MCU_I2S_SDIN 128 LINK_LED
102 MCU_I2S_SDOUT 129 SPEED_LED
103 MCU_I2S_LRCK 130 MDI0_P
104 MCU_HP_DET 131 MDI0_N
105 SPDIF_TX 132 MDI1_P
106 SPDIF_RX 133 MDI1_N
107 MCU_KEY_VOLDN 134 MDI2_P
108 MCU_KEY_VOLUP 135 MDI2_N
109 MCU_NRESETIN 136 MDI3_P
110 MCU_PWRKEY 137 MDI3_N
111 GPIOA28 138 USBHSIC_DATA
112 GPIOB9 139 USBHSIC_STROBE
113 UARTRXD3 140 USB_HOST_D-
114 UARTTXD3 141 USB_HOST_D+
115 UARTRXD2 142 OTG_USB-
116 UARTTXD2 143 OTG_USB+
117 UARTRXD1 144 USB_ID
   
J2 J4
Pin Define Pin Define
55  MCU_LVDS_Y0P   73 MIPICSI_DN0
56  MIPIDSI_DP3   74 MIPICSI_DP0
57  MIPIDSI_DN3   75 MIPICSI_DNCLK
58  MIPIDSI_DP2   76 MIPICSI_DPCLK
59  MIPIDSI_DN2   77 CAM_H
60  MIPIDSI_DP1   78 CAM_V
61  MIPIDSI_DN1  79 CAM_CLK
62  MIPIDSI_DP0  80 CAM_D0
63  MIPIDSI_DN0  81 CAM_D1
64  MIPIDSI_DPCLK  82 CAM_D2
65  MIPIDSI_DNCLK  83 CAM_D3
66  MIPIDSI_VREG  84 CAM_D4
67  MIPICSI_DN3  85 CAM_D5
68  MIPICSI_DP3  86 CAM_D6
69  MIPICSI_DN2  87 CAM_D7
70  MIPICSI_DP2   88 MCU_CAM1_MCLK
71  MIPICSI_DN1  89 CAM_PN
72  MIPICSI_DP1   90 CAM_RST
Pin Define Pin Define
145 DC5V_OTG  163 MCU_SD1_D0
146 SEN0_INT  164 MCU_SD1_D1
147 GPIOE13 165 MCU_SD1_D2
148 GPIOC11 166 MCU_SD1_D3
149 GPIOC7  167 MCU_SD0_CD
150 GPIOC12 168 MCU_SD0_D3
151 ADC1  169 MCU_SD0_D2
152 ADC0  170 MCU_SD0_D1
153 PWM2 171 MCU_SD0_D0
154 SPI_WP  172 MCU_SD0_CMD
155 SPIFRM0  173 MCU_SD0_CLK
156 SPIRXD0 174 RTC
157 SPITXD0 175 VCC3P3_SYS
158 SPICLK0   176 MCU_SCL_2
159 IR  177 MCU_SDA_2
160 MCU_SD1_CD  178 MCU_SCL_1
161 MCU_SD1_CLK  179 MCU_SDA_1
162 MCU_SD1_CMD 180 TOUCH_INT

Base Board Design Notice:

1. Power Design

CORE4418 core board provides two power supply input mode, One is 5V/1A power input, connect to the Pin 124 and Pin 125 on the CORE4418, the others is 3.5V to 4.2V Li-battle power supply in, Connect to Pin 122/Pin 123 on the CORE4418. you can power in the board with two mode at the same time, then the CORE4418 can cahrge the Li battle with the on board charge chips. If the use of 5V power in mode, the peak current taking into account the need to ensure that the current chip, 1A. In addition, the core board Pin126 is the Power out pin, can support out 3.5V to 5V, it can be used to the base board power supply. pin175 is the 3.3V power output, can be used to supply base board, but in the core board after sleep, 3.3V Will turn off the electric voltage, wake up after return to normal. Pin174 is the RTC power input, can be connected with a battery backup in the base board. The voltage corresponding to the pin is as follows:

  • Pin 122/123: Li-battle Power in, for single 4.2V lithium batteries, can be suspended if not need batteries.
  • Pin 124/125: Power adapter Power in, Support 4.5V to 5.5V/1A Power input.
  • Pin 126: battery and power adapter common level of output, the out voltage is base on the Power adapter or the Li-battle, can be used for
  • base board power supply.
  • Pin 174: RTC Power in, if you need back up the RTC time, connect it to back up battle 1.8V.
  • Pin 175: 3.3V output, for base board power, when CPU board sleep, it will be closed, when wake up the CPU board, it will be return.a

2. USB design

S5P4418 has a USB HOST port, a USB HSIC port and a USB OTG port, the OTG port can be used as USB HOST or USB Device, 
which is the standard OTG port. USB HOST port can be directly connected to USB peripherals, USB HSIC need to add the bridge
Chips such as USB3503, USB4640 etc, then you can use it as the standard USB HOST.
In the PCB line, Pin140 and Pin141(USB_HOST_D-, USB_HOST_D+ pin) need to be set as Differential Pair, Pin142 and Pin143(OTG_USB-, OTG_USB+) need to be set as Differential Pair,  pin of a differential line, they will have the same length, and 90 ohms impedance matching.

3. HDMI Design

  • Exynos4418 comes with HDMI controller chip, support HDMI1.4 protocol. Core board Pin136-Pin143 total 8Pin, must take as long as the Isometric differential lines, and impedance of 100 ohms, otherwise there will be lost HDMI color screen and off And other issues.


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