REL0.2
Page 95 of 110
Zynq-Ult MPSoC (ZU11/17/19EG) SOM Development Platform Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6.4
I2C Expander
The Zynq Ult MPSoC (ZU11/17/19EG) Carrier board supports one 4 channel I2C Bus Switch (PI4MSD5V9546ALEX). I2C tree
shown below.
B2B-2
1V8 to 3V3
LEVEL SHIFTER
SFP+ CONNECTOR
( 0x50/51)
SDI IN EQUALIZER
(0x2D)
SDI OUT DRIVER
(0x30)
IO EXPANDER 1
(0x20)
IO EXPANDER 2
(0x21)
QSFP+ CONNECTOR
(0x50)
FIREFLY POWER
CONNECTOR
(0x50)
CLOCK
SYNTHESIZER 1
(0x76)
CLOCK
SYNTHESIZER 2
(0x75)
PCIe x4
CONNECTOR
USB Type C
CONTROL
(0x22)
HDMI RETIMER
(0x5B)
FMC+
CONNECTOR
(0x51)
FMC
CONNECTOR
(0x52)
I2C0_3V3
M.2
CONNECTOR
iW-RainboW-G35M-ZynqUltMPSoC SOM DevKit
I2C Block Diagram
4 Channel I2C bus
Switch
(0x70)
I2C Bus Switch 0
I2C Bus Switch 1
I2C Bus Switch 2
I2C Bus Switch 3
IO EXPANDER 3
(0x23)
Zynq Ultra Scale
SoC/FPGA
PMIC
(0x58)
I2C0_1V8
20 PIN GPIO
HEADER (1.8V)
Connectors where
I2C is connected
Active Chips where
I2C is connected
Note : 7 bit I2C addressing used
I2C0_DATA
I2C0_CLK
SOM
Figure 32 I2C Tree