AMD XILINX VPK180 - Page 40

Table 10: I2C1 Multiplexer TCA9548A U35 Address 0x74 Connections (cont'd)
I2C Devices I2C MUX Pos. I2C Address Devices
8A34001 7
0x5B
U219, J310
Table 11: I2C1 Multiplexer TCA9548A U322 Address 0x75 Connections
I2C Devices I2C MUX Pos. I2C Address Devices
SFPDD1_I2C 0
0x##
J350
SFPDD2_I2C 1
0x##
J352
SFPDD3_I2C 2
0x##
J385
SFPDD4_I2C 3
0x##
J387
RC21008A_GTCLK1 4
0x09
U298
RC21008A_GTCLK2 5
0x09
U299
PMC MIO[46:47] I2C0 Bus
[Figure 3, callout 12]
Bus I2C0 connects the XCVP1802 U1 PS bank 501 and the XCZU4EG system controller U125
PS bank 501 to a GPIO 16-bit port expander (TCA6416A U233) and I2C switch (TCA9548A
U33). The port expander enables accepng various fan controller, FMCP connector, and power
system status inputs. Bus I2C0 also provides access to power system PMBus power controllers
and INA226 power monitors, as well as three SI570 components via the U33 TCA9548A switch.
TCA6416A U233 is pin-strapped to respond to I2C address 0x20. The TCA9548A U33 switch is
set to 0x74. Details for controlling the U33 TCA9548A switch can be located in the data sheet
located on the Texas Instruments website.
The detailed ACAP connecons for the feature described in this secon are documented in the
VPK180 board XDC le, referenced in Appendix B: Xilinx Design Constraints.
The following gure shows the I2C0 bus connecvity.
Chapter 3: Board Component Descriptions
UG1582 (v1.0) February 21, 2023 www.xilinx.com
VPK180 Board User Guide 40
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