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2.3
ROM-3420 Board Block Diagram
RTX CONN C
CSI1 MIPI
PCIE0
M
I D
GIGA LAN
USB2.0 OTG
USB2.0 HOST
RTX CONN D
SATA
LVDS
HDMI
S
W
2
HDMI DDC
CAN BUS x2
S
W
1
I2C0
I2C1
S
W
0
I2C2
I2S
UART x3
ROM-3420 User Manual
DDR3 256MB x 4pcs
x64
4 lanes
1 lane
R
G
M
I I
ATHERO
AR8033-AL1B
I
2
C
2
I2C SWITCH
PCA9545APW
I
2
C
2
I2C SWITCH
PCA9545APW
I2C3
I
2
C
2
I2C SWITCH
PCA9545APW
UART2/4/5
UART1
Console
UART2-wires
Figure 2.1 ROM-3420 Block Diagram
SPI NOR 4MB
eMMC 4GB
SPI5 CS0
SD4 8bit
2 chip select/address 26 bit/data 16 bit
Freescale
i.MX6
1GHz
x24
I2C1
SD2 4bit
SPI1(CS0/1)/SPI5(CS1/2)
I2C2
I2C SWITCH
PCA9545APW
SW3
JTAG
MCU
8
RTX CONN A
SYSTEM BUS
MISC
POWER
MANAGMENT
WDT
RTC POWER
RTX POWER
RTX CONN B
BOOT SELECT
TTL LCD
I2C3
4 bit SD
SPI
GPIO x 10
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