Table 2-14. I2C bus device map (continued)
I2C bus 7-bit address Device Description Notes
0x77 NXP PCA9547PW I2C bus multiplexer
(primary)
Converts I2C1 bus into
eight channels
I2C1_CH0 0x50 Microchip 24AA512-I/SN I2C boot memory Provides I2C booting
option
0x51 256-byte EEPROM SPD data Stores SPD and
temperature data for
DDR#1 UDIMM
connector 1
0x52 256-byte EEPROM SPD data Stores SPD and
temperature data for
DDR#1 UDIMM
connector 2
0x53 256-byte EEPROM SPD data Stores SPD and
temperature data for
DDR#2 UDIMM
connector 1
0x54 256-byte EEPROM SPD data Stores SPD and
temperature data for
DDR#2 UDIMM
connector 2
0x57 Microchip AT24C02C-
XHM-B: 256-byte
EEPROM
System ID Stores board-specific
data, such as MAC
addresses and serial
number/errata. Write
protectable.
I2C1_CH1 0x4D Microchip EMC2305 5-channel PWM fan
controller
0x6A Silicon Labs Si52208-
A01AGM
PCIe clock generator
0x74 Silicon Labs Si5341B-
D08333-GM
Clock synthesizer Provides SYSCLK and
non-PCIe SerDes clocks
I2C1_CH2 0x40 Texas Instruments
INA220
VDD voltage/current/power
monitor
Reports voltage, current,
and power data for VDD
0x63 Linear Technology
LTC3882
VDD power regulator Supplies power to the
core voltage rail (VDD)
I2C1_CH3 0x4C NXP SA56004ED Thermal monitor 1 Monitors processor
thermal diode 1
0x4D NXP SA56004FD Thermal monitor 2 Monitors processor
thermal diode 2
I2C1_CH4 Unused
I2C1_CH5 Unused
I2C1_CH6 0x50 Microchip 24AA512-I/SN Memory for booting 40 GbE
CS4223
I2C1_CH7 0x75 NXP PCA9547PW I2C bus multiplexer
(secondary)
Converts I2C1_CH7
channel into eight sub-
channels
I2C1_CH7_CH0 0x50 Quad SFP+ cage 40G MAC2 QSFP+ port
Table continues on the next page...
I2C interface
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
44 NXP Semiconductors
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