AMD Xilinx ZCU670 - Page 62

As described in I2C0 (MIO 14-15), the I2C0 bus provides access to the PMBus power controllers
and the INA226 power monitors through the U17 PCA9544A bus switch. All PMBus controlled
Inneon regulators are ed to the IRPS5401_SDA/SCL PMBUS, while the INA226 power
monitors are separated on to INA226_PMBUS.
Figure 8 and Table 10 document the I2C0 bus access path to the Inneon PMBus controllers and
INA226 power monitor op amps. Also refer to schemac 038-05070-01. Power rail
measurements are accessible to the system controller and RFSoC PL logic through their
respecve I2C0 bus connecons.
Chapter 3: Board Component Descriptions
UG1532 (v1.0) March 30, 2022 www.xilinx.com
ZCU670 Board User Guide 62
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