All Questions
35
questions
0
votes
0
answers
21
views
USB Type-C DFP Host Port implementation without Switch
I am currently designing a new board that has a four port USB 3.2 x1 Gen1 hub on it. I only need two ports and now thinkering how to best make use of the other two ports.
The idea was to make at least ...
1
vote
4
answers
97
views
Why USB-C plug doesn’t charge? [closed]
I have multiple USB-C 5V chargers of the same type that do not charge connected android devices. Devices detect charging if these are turned off, but when turned on, no charging icon of any visual ...
0
votes
0
answers
50
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How should I select the ohm values for pull-up and pull-down resistors in a device with a USB Type-C connector used solely for power
Good morning, everyone. I am exploring the transition of the receptacle from a micro USB connector to a USB Type-C. Initially, my plan included implementing both sink and source capacity. However, ...
- 145
1
vote
1
answer
163
views
Replace micro USB tablet connector with USB C
I'm considering upgrading my dad's old tablet, which currently has a micro USB connector. The issue arises from his habit of frequently misplacing the charger, and I'd prefer not to rely on an ...
- 145
1
vote
1
answer
94
views
Is it possible to apply quick charge 3.0 to USB-C?
There's a wall outlet with a USB-A fast charging port
It has a USB-A charging port that supports 9V 1.67A fast charging.
It uses FP6601Q and supports QC2.0/QC3.0.
I'm trying to change the USB-A ...
- 27
0
votes
0
answers
73
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USB-c R1/R2 configuration
I have a usb-c cable that plugs into a 4s lithium ion battery (DJI FPV goggle battery with proprietary cable.) The battery will only turn on if the usb-c plug (picture below) is plugged into it. I ...
2
votes
1
answer
457
views
Using USB 4.0 port as USB 3.2 Gen2 x2 (10 Gbps per lane) with USB-C connector without PD-Controller
I'm designing a Motherboard with AMD Ryzen 7040 series APU, and I'm interested to use one of it's USBC ports (which support USB 4.0) only as USB 3.2 Gen2 x2 port.
I know that USB-C connector could be ...
- 1,067
0
votes
0
answers
93
views
LTE SC206E Smart Module acting as USB host and device
We have a requirement such that SC206E should act as a device when USB cable is connected to
J12 for programming ,otherwise it acts as a host. For this purpose we have implemented the circuit as shown ...
- 2,593
0
votes
1
answer
81
views
Using only USB Type C signals without USB2.0 Signals
Need your help regarding SC200E USB. As per my understanding SC200E supports both USB2.0 and USB Type C.
My question is can we use it separately.
I mean we need to connect the USB2.0 signals of SC200E ...
- 2,593
2
votes
1
answer
2k
views
How do devices know how much power draw a usb cable can support?
This has been a little confusing.
I have cables that can support 5V-3A for both USB 2 and 3.
If I put together a type C to type A cable, the specs mandate the Default USB Type-C Current Rp resistor (...
- 125
3
votes
1
answer
136
views
How can I allow rotation of a USB-C port if I only have a single USB 3.1 lane connected to it?
As a follow-up question to my previous question about connecting two 3.2 Gen1 Links to Type-C Connector, I learned that I can connect CC1 signal to 56K PU to VBUS and this pin-out supports one USB3.1 ...
- 1,067
1
vote
1
answer
720
views
Converting two USB 3.2 Gen1 TypeA Connectors to one USB-C Connector
I'm using VL805 USB3.0 Host Controller which takes one lane of PCIe and outputs 4 ports of USB3.2 Gen 1 (5Gbps) .
I have been looking for a reference design that uses two of these ports for USB-C ...
- 1,067
1
vote
1
answer
114
views
How much power for USB device from USB 3 Type-A host via full featured Type-A to Type-C cable? Also, Enumeration?
I have the following setup with two scenarios I will describe underneath.
The more I think about it and the more I look up the spec I get more confused and frustrated.
A USB 3.X host connected over a ...
- 21
0
votes
2
answers
473
views
How to switch Rp and Rd resistors with MOSFETs in Dead Battery Mode
Using the USB-C specification as reference, I cannot figure out how to actually switch Rd and Rp resistors on and off using MOSFETs in a real schematic, without requiring external power/battery, i.e. ...
- 113
1
vote
2
answers
2k
views
USB-C passthrough (including CC line) not making connection
I'm trying to make a USB-C switcher.
I'm using a rotary switch (center) to have one input USB-C receptacle switch between two output receptacles. This is so I can plug my keyboard into the input and ...
- 11