SOM-4418

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1 Introduction

Overview

Front

Back

2 Hardware Spec

• SoC：Samsung S5P4418 Quad Core Cortex-A9 with dynamic frequency scaling up to 1.4G Hz
• PMU Power Management: Implemented by an MCU, support solftware power-off, and RTC alarm power-on functions
• System Memory：1GB 32bit DDR3 RAM
• eMMC：8GB
• Ethernet：Gbps Ethernet Port (RTL8211E) with unique MAC, support WOL(Wake On Lan)
• Video Input: MIPI-CSI
• Video Output: HDMI / LVDS / LCD
• Audio: Build in Codec, 2-Chanel headphone output, one Microphone input
• USB: 4 x USB 2.0 Host, 1 x USB 2.0 OTG
• GPIO: 13 x GPIOs, 3 x I2Cs, 1 x SPI, 5 x UART, 3 x PWM, 2 x SDIOs
• LED: 1 x power LED , 1 x SYS LED
• Other Resource: 1 x onboard thermistor
• Power: DC 5V/1A
• Heat Sink: Aluminum heat sink
• PCB: Six Layer, ENIG
• PCB Dimension: 67.7 mm x 40 mm
• Working Temperature: -40℃ to 70℃

4 Diagram, Layout and Dimension

4.1 Layout

File:SOM-4418-IF.png

SOM-4418 Layout

• 204 Pin Spec
  • Socket Type：0.6mm Pitch 204-Pin Standard Type DDR3 SODIMM Socket

Pin#	Name	Description	Pin#	Name	Description
1	VDD_5V		2	VDD_5V
3	VDD_5V		4	VDD_5V
5	VDD_5V		6	VDD_5V
7	GND		8	GND
9	GND		10	VRTC_IN
11	VCC_WIFI_IO(3.3V)		12	VCC_IO(3.3V)
13	MMC1_D0		14	BOOT_CS
15	MMC1_D1		16	PWRKEY
17	MMC1_D2		18	NRESETIN
19	MMC1_D3		20	AliveGPIO3
21	MMC1_CMD		22	EXT_PWR_CTRL
23	GND		24	MMC0_D0
25	MMC1_CLK		26	MMC0_D1
27	WL_REG_ON(GPIOB24)		28	MMC0_D2
29	WL_HOST_WAKE(GPIOC17)		30	MMC0_D3
31	UART1_TX		32	MMC0_CMD
33	UART1_RX		34	MMC0_CD
35	UART1_nCTS		36	MMC0_CLK
37	UART1_nRTS		38	GND
39	BT_RST_N(GPIOB8)		40	MIPI_CSI0_CLKN
41	BT_WAKE		42	MIPI_CSI0_CLKP
43	BT_HOST_WAKE		44	GND
45	LPO_32Khz		46	MIPI_CSI0_D0N
47	GND		48	MIPI_CSI0_D0P
49	MDI0_P		50	GND
51	MDI0_N		52	MIPI_CSI0_D1N
53	MDI1_P		54	MIPI_CSI0_D1P
55	MDI1_N		56	GND
57	GND		58	/NC
59	MDI2_P		60	/NC
61	MDI2_N		62	GND
63	MDI3_P		64	/NC
65	MDI3_N		66	/NC
67	GND		68	GND
69	SPEED_LED		70	/NC
71	LINK_LED		72	/NC
Connector Key

Note:

1. For more details refer to the document: []

4.2 Board Dimension

SOM-4418 Dimensions

For more details refer to the document: []

5 Notes in Hardware Design

5.1 EEPROM

• The board has an EEPROM(model: 24AA025E48T-I/OT) with a unique MAC. This EEPROM is connected to I2C0 and its address is 0x51 therefore some EEPROM chips cannot be connected to I2C0 which will cause conflicts of addresses.
• In our tests these EEPROM chips cannot be connected to I2C0: 24C04, 24C08 and 24C16. There chips which we tested can be connected to I2C0: 24C01, 24C02 and 24C256
• For more details about EEPROM address issues refer to http://www.onsemi.com/pub_link/Collateral/CAT24C01-D.PDF

6 Schematics & Mechanical drawing

• PCB Dimension(SOM-4418_2005_dxf.zip)
• Schematic(SOM-4418-2005-Schematic.pdf)
• S5P4418 Datasheet (S5P4418_Datasheet_0.1.pdf)