VCU1287 Characterization Board
www.xilinx.com
55
UG1121 (v1.0) December 11, 2015
Chapter 3:
Board Component Descriptions
Table 3-21
shows the I2C channel assignments.
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
Figure 3-14
). J121 and J125 are used to enable or disable the bus
repeaters and isolate the system controller or the UltraScale FPGA I2C bus.
Table 3-21:
I2C Channel Assignments
U22
Channel
I2C Component
0
System PMBus
1
SuperClock-2 module
2
System controller EEPROM
3
FMC1
4
FMC2
5
FMC3
X-Ref Target - Figure 3-14
Figure 3-14:
I2C Bus Multiplexer and Upstream Repeater
3&$'&75
&%XV
5HSHDWHU
6\VWHP&RQWUROOHU
7&$$3:5
3&$'&75
&%XV
5HSHDWHU
8OWUD6FDOH)3*$
30%XV
6XSHU&ORFN
6<6B((53520
)0&
)0&
)0&
6\VWHP&RQWUROOHU
&5HSHDWHU
(QDEOH'LVDEOH
8OWUD6FDOH)3*$
&5HSHDWHU
(QDEOH'LVDEOH
*1'
87,/B9
-
*1'
87,/B9
-
;
Send Feedback
