All Questions
21
questions
3
votes
1
answer
92
views
How can one have a canonically correct USB 2.0 Bus Powered Hub (100ma limit per port) with Type-C Downstream Facing Ports
Through research I am aware that using the CC lines one can advertise "Default" (500mA for 2.0 and 900mA For 3.0+), 1.5A and 3A before getting into PD territory, but none of these include ...
0
votes
1
answer
99
views
How to connect USB-C port to USB hub?
Sorry if this is a dumb question, I'm very new to all of this. I'm trying to connect the upstream port on a 4 port USB hub to a USB type C plug and I'm somewhat confused on how to wire the TX and RX ...
- 41
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
0
votes
1
answer
136
views
USB Hub Self-Powered using USB Type C
I'm designing a board based on a USB Hub HS 2.0 that has five permanent attached ports, two of them with a high current consumption (180 mA typical, 250mA max. per device).
I would like the board to ...
- 101
0
votes
2
answers
355
views
USB multiplexer with common bus
Okay this is indeed a dumb question but I would like to know if this is feasible. I want to create a usb mux that can connect a common USB port to 4 ports. There is an IC TS3USB221 that does the same ...
- 97
0
votes
2
answers
525
views
Extend cable of USB hub [closed]
I bought a device recently which is a USB hub. It has multiple HDMI ports, multiple USB 2.0 and USB 3.0 ports, an Ethernet port, an SD card slot, etc. It is a beast. It connects to my laptop via a USB-...
- 12k
2
votes
1
answer
247
views
Using battery bank as a continuous battery backup / supply for USB devices
I have a Raspberry Pi and mega-4 powered USB hub working well, with one USB-C power input each.
The battery bank has 2 USB ports, one for each device.
The charger (bottom left) is a standard buck ...
- 133
1
vote
1
answer
125
views
Splitting a USB-C for aux power
I'm building a mechanical keyboard and I need more current from my PC than I can get from one usb port. Can buy/make a usb splitter that I can plug into two A ports on my PC and plug into my USB-C MCU?...
- 13
3
votes
1
answer
151
views
How do I connect USB Type-C signals to a USB Type-A connector?
I am designing a USB hub circuit by using USB7002. It gives out two USB 3.2 Gen 1 ports with Type-C support. Each of these two ports has two pairs of RX and TX differential pairs (SS-RXA, SS-RXB, SS-...
- 14.2k
0
votes
1
answer
123
views
Crafting a Superspeed USB Type-C port out of two ports on a USB 3 hub?
I am designing a “simple” USB-C Hub, that will have two downstream facing USB-C ports (and nothing else), both supporting USB 3 speeds. I have solved some of the challenges already- VCONN, power ...
- 133
-1
votes
1
answer
278
views
USB C splitter with two charge for 2 usb monitors [closed]
I have a laptop with 2 USB C ports only. I want to be able to continue charging the laptop via one of the USB C ports and then use the remaining USB C port to split two directions, so that it provides ...
- 9
3
votes
1
answer
172
views
Why can't you make a thunderbolt 3 hub?
So laptops with thunderbolt 3 are pretty common, docks are common, every other kind of USB seems to be able to be used with a hub. I know thunderbolt 3 can be daisy chained, theoretically eliminating ...
0
votes
1
answer
37
views
How do I determine my new power requirements when switching my peripheral to Raspberry Pi
Problem:
I have just moved my camera array USB peripheral from a MacBook Pro to a Raspberry Pi 400, and the Pi can only see at most 19 of the 24 cameras that the MacBook Pro can see. I think this is ...
- 101
1
vote
1
answer
908
views
Purpose of this IC in USB 3.0 Hub
I'm trying to design my own USB 3.0 hub based on this commercial design,
I can understand everything in this design except the usage of IC "ASM1543".
Unfortunately there is no datasheet ...
- 155
-1
votes
1
answer
215
views
USB Type-C 10Gb mux, or hub IC [closed]
I am planning to create a PCB that takes the Type-C frontpanel header, with a speed of 10 Gbps and provides two USB Type-C ports from that one cable.
The PCB will be a frontpanel mod.
During my IC ...
- 163