Other Parts Discussed in Thread: TPS74801
The YUSB4041 not wake up.
The VDD11 is 1.1V ,VDD33 is 3.2V
The I2C eeprom U6 not assy
No frequency on Y1.
Please advice ?
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The YUSB4041 not wake up.
The VDD11 is 1.1V ,VDD33 is 3.2V
The I2C eeprom U6 not assy
No frequency on Y1.
Please advice ?
Hi JMMN,
upstream connected
USB_VBUS = 0.458V
USB_R1 = 0V
VDD33 = 3.27V
VDD11 = 0V
The TPS74801 stop providing the 1.1V it append after take out resistors connected to TEST and SMBUSz.
I check this on 2 boards and got same result something shortcut the VDD1.1 (the TUSB4041 temperature rise to about 40C).
Please advice ?
thanks
Ofer
Hi JMMN,
Removing the resistor connected to TPS74801 pin 15 (SS) resolved the missing 1.1V VDD11 problem.
Removing the pull up from test pin and remove poll down from SMBUSz your recommended solved the HUB.
Everything work now.
Thanks a lot.
Ofer