AMD XILINX VPK180 - Page 39

Figure 13: I2C1 Bus Topology
0x74
0
1
2
3
4
5
6
7
U35 TCA9548A
REF_CLK_I2C
FMC1_IIC
OSFP_I2C
LPDDR4_SI570_CLK3
LPDDR4_SI570_CLK2
LPDDR4_SI570_CLK1
QSFPDD (1-6)
8A34001
L/S
0x74
0
1
2
3
4
5
6
7
L/S
I2C1
System
Controller
Versal ACAP MIO
0
1
2
3
4
5
6
7
SFPDD1_I2C
SFPDD2_I2C
SFPDD3_I2C
SFPDD4_I2C
RC21008A_GTCLK1
RC21008A_GTCLK2
NC
NC
0x75
0
1
2
3
4
5
6
7
I2C
MUX
#1
I2C
MUX
#2
U322 TCA9548A
0x54 & 0x5C
EEPROM
U34 M24128
X26552-071922
U34 is an I2C addressable 128-Kbit serial I2C bus EEPROM. It has two addresses associated with
it and is connected at the same I2C level as the I2C mulplexer listed in the following table.
Address 0x54 is used when the memory array is accessed. When using 0x5C, the idencaon
page is accessed.
The U35 and U322 addresses 0x74 and 0x75 connecons are listed in the following tables.
Table 10: I2C1 Multiplexer TCA9548A U35 Address 0x74 Connections
I2C Devices I2C MUX Pos. I2C Address Devices
REF_CLK_I2C 0
0x5D
U32
FMC1_IIC 1 0x## J51
OSFP_I2C 2 0x## J362
LPDDR4_SI570_CLK3 3
0x60
U4
LPDDR4_SI570_CLK2 4
0x60
U3
LPDDR4_SI570_CLK1 5
0x60
U248
QSFPDD (1-6) 6 0x## J1, J2, J354, J355, J358, J359
Chapter 3: Board Component Descriptions
UG1582 (v1.0) February 21, 2023 www.xilinx.com
VPK180 Board User Guide 39
Send Feedback