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ROM-5780 User Manual
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4.1.7
I
2
C Switch
ROM-5780’s I2C7 is converted to a 4-way I2C9 to I2C12 via TCA9545. It’s a quad
bidirectional switch controlled via the I2C bus. The SCL/SDA upstream pair fans out
to four downstream pairs or channels. Please note that the devices connected on the
I2C switch cannot be 0x73, because the address of the I2C switch TCA9545 is
already 0x73. If the addresses are the same, there will be a conflict, and data will not
be transferred.
4.1.7.1
Lists the bus of the I2C Hub
I2c-9 to i2c-12 is routed from the i2c7 of ROM-5780 through the hub.
4.1.7.2
Detect device address
For example: I2C9
Note:
The device address connected on the hub cannot be 0x73.
4.1.8
SD/MMC Card/USB Disk/HDD
Plug the storage device in and browse the file manager.
Summary of Contents for ROM-5780
Page 1: ...User Manual ROM 5780 Rockchip RK3399 Cortex A72 A53 SMARC 2 1 Computer on Module...
Page 6: ...ROM 5780 User Manual vi...
Page 8: ...ROM 5780 User Manual viii...
Page 14: ...ROM 5780 User Manual 6...
Page 18: ...ROM 5780 User Manual 10...
Page 38: ...ROM 5780 User Manual 30...
Page 47: ...39 ROM 5780 User Manual Chapter 5 Advantech Services...