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Table 3-21
shows the I2C channel assignments.
Table 3-21: I2C Channel Assignments
U22
Channel
0
1
2
System controller EEPROM
3
4
5
The upstream port of the TCA9548 multiplexer connects to PCA9306 (U46, U53, U55, and
U58) dual bidirectional I2C and SMBus voltage-level translator and bus repeaters, with an
enable (EN) signal (see
repeaters and isolate the system controller or the UltraScale FPGA I2C bus.
X-Ref Target - Figure 3-14
Figure 3-14: I2C Bus Multiplexer and Upstream Repeater
VCU1287 Characterization Board
UG1121 (v1.0) December 11, 2015
I2C Component
System PMBus
SuperClock-2 module
FMC1
FMC2
FMC3
Figure
3-14). J121 and J125 are used to enable or disable the bus
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Chapter 3:
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