I2C0 (Mio 14-15); I2C0 And I2C1 Bus Connectivity Overview - Xilinx Zynq UltraScale+ ZCU216 User Manual

I2C0
U13
PS_I2C0
L/S
U14
PL_I2C0
L/S

I2C0 (MIO 14-15)

[Figure 2, callout 17]
I2C bus I2C0 connects Zynq UltraScale+ RFSoC U1 PS Bank 500, PL bank 89, and the system
controller U38 to a GPIO 16-bit port expander (TCA6416A U15) and I2C switch (PCA9544A
U17). The port expander enables controlling resets and power system enable pins, and accepting
various alarm inputs without requiring the PL-side to be configured. The I2C0 bus also provides
access to the PMBUS power controllers and INA226 power monitors through the U17
PCA9544A switch. TCA6416A U15 is pin-strapped to respond to I2C address 0x20. The
PCA9544A U17 switch is set to 0x75.
UG1390 (v1.1) July 10, 2020
ZCU216 Board User Guide
Figure 6: I2C0 and I2C1 Bus Connectivity Overview
System Controller
P3
P4
U38 MSP430
Zynq UltraScale+
PS_I2C1
RFSoc PS-Side
PL_I2C1
RFSoC PL-Side
U1 XCZU49DR
0 MAX6643_OT_B
0x20
1 MAX6643_FF_B
MIO26_PMU_IN
2
P0
DAC_VOUT_SEL
3
5 IIC_MUX_RST_B
6 GEM3_RST_B
GPIO
MAX6643_FSPD
7
Expander
0
FMCP_PRSNT
3 VINT_VRHOT_B
P1
5
8A34001_RST_B
6
IRPS_ALERT_B
7 INA_ALERT_B
U15 TCA6416A
0x75
0
INA226 PMBus
1 N.C.
12C Mux
2
IRPS5401 (PS + PL Voltage Controller PMBus)
#3
3
SYSMON
U23 PCA9544A
Chapter 3: Board Component Descriptions
I2C1
0x74
12C
U18
Mux
L/S
U19
L/S
U26 TCA9548A
0x75
12C
Mux
U22 TCA9548A
PMBus Cable
J21
Send Feedback
0 EEPROM
1 SI5341
2 USER_SI570_C0
3 USER_MGT_S1570
4 8A34001
5 CLK104
6 RFMC_2
7 N.C.
FMC+ HSPC
0
USER_SI570_C1
1
SYSMON (DNP resistors)
2
PS_DDR4_SODIMM
3
SFP3
4
SFP2
5
SFP1
6
SFP0
7
X23318-100119
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