Table 9: I2C0 Port Expander TCA6416A U15 Connections (cont'd)
TCA6416A U15
Schematic Net
Name
Connected To
Pin Name Pin Name Ref. Designator Device
P05 IIC_MUX_RESET_B RESET_B U20 TCA9548A
P06 GEN3_EXP_RESET_B B U34 SN74LVC1G08
P07 MAX6643_FULL_SPEED FULLSPD U50 MAX6643
P10 FMCP_HSPC_PRSNT_M
2C_B
PRSNT_M2C_L J28(H) ASP_184329_01
PRSNT_M2C_L J28(N) ASP_184329_01
P13 VCCINT_VRHOT_B VRHOT_ICRIT# U104 IR35215
P15 8A34001_EXP_RST_B A U415 SN74LVC1G08
P16 IRPS5401_ALERT_B SM_ALERT# U104 IR35215
ALERT_B U53, U55 IRPS5401
SALERT# U112, U123, U127 IR38164
P17 INA226_PMBUS_ALERT ALERT U57, U58, U59,U60,
U61, U62, U63, U64,
U65, U67, U71, U75,
U77, U124
INA226
The addresses of each target device on the I2C0 U17 PCA9544A switch are idened in the
following table.
Table 10: I2C0 Multiplexer PCA9544A U17 Target Device Addresses
PCA9544A U17 (Addr 0x75) Port I2C0 Bus Device Target Device Address
0 INA226_PMBus (Power Monitors) 0X40-0x43, 0x45-0x4E
1 Not Connected N/A
2 IRPS5401_PMBus (Voltage Regulators) 0X40, 0x43, 0x44, 0x45, 0x4B, 0x4C
3 SYSMON U1 bank 65 0X32
I2C1 (MIO 16-17)
[Figure 2, callout 18]
I2C bus I2C1 connects RFSoC U1 PS Bank 500, PL bank 89, and system controller U38 to two
I2C switches (TCA9548A U20 and U22). These I2C1 connecons enable I2C communicaons
with various I2C capable target devices. TCA9548A U20 is pin-strapped to respond to I2C
address 0x74. TCA9548A U22 is pin-strapped to respond to I2C address 0x75.
The following gure shows a high-level view of the I2C1 bus connecvity.
Chapter 3: Board Component Descriptions
UG1532 (v1.0) March 30, 2022 www.xilinx.com
ZCU670 Board User Guide 31
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