14 i2c, 15 spi, 14 i2c 4.15 spi – Artesyn COMX-P4080 Installation and Use (August 2014) User Manual
Page 68: Figure 4-8, I2c bus distribution
Functional Description
COMX-P4080 COM Express Module Installation and Use (6806800L20C)
68
4.14 I2C
There are four physical I2C buses in the COMX-P4080. Three of these are configured as I2C
buses and routed to the COM-E connectors. The fourth one is multiplexed with the SDHS bus.
The figure below illustrates the distribution of the I2C buses.
4.15 SPI
The COMX-P4080 has one SPI bus with four chip select signals. It also has an SPI flash socket
attached to the SPI bus for debug purposes only. All SPI bus signals are routed to the COM-E
connectors.
Figure 4-8
I2C Bus Distribution
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