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i.MX 6ULL
RTC_XTALI
RTC_XTALO
32.768-kHz
Crystal Oscillator
MAC RMII x2
USB Hub
USB2517
Ethernet PHY
DP83849I
50-MHz
Oscillator IC
24-MHz
Crystal Oscillator
XTALI
XTALO
USB_OTG2
24-MHz
Crystal Oscillator
XTALI
XTALO
I2C4
XTALI
NVCC_UAR
T
3V3
I2C1_SCL
PMIC
USB2ANY
Addr: 0x24
Current Sensor
Addr: 0x40
I2C1_SDA
3V3
2
2
2
2
2x 10 k
Ÿ
I2C2_SCL
I2C2_SDA
3V3
VSS
2
2x 10 k
Ÿ
(PMIC Programmer)
Current Sensor
Addr: 0x41
i.MX 6ULL
System Overview
19
TIDUEW7 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Integrated Power Supply Reference Design for NXP i.MX 6ULL
2.4.3
I
2
C Device Chain
shows the I
2
C channel mapping from the processor to each slave device.
Figure 18. I
2
C Device Chain
2.4.4
Clock Scheme
The following is a list matching the required clock frequency to each IC that needs clocking.
shows the clocks that interface with the i.MX 6ULL processor.
•
i.MX 6ULL – 24 MHz and 32.768 kHz
•
DP83849I (Ethernet PHY) – 50 MHz
•
USB2517I (USB Hub) – 24 MHz
Figure 19. Clock Structure