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Hi Cypress support team,
We are going to use CYPD3120 in our design along with TI cross-switch TUSB564RNQT. Please have a look on the questions along ...
Hi Cypress support team,
We are going to use CYPD3120 in our design along with TI cross-switch TUSB564RNQT. Please have a look on the questions along with block diagram. (please note that I have already asked these questions in another post but I wasn't able to get the answers);
1. Please have a look on the block diagram for CYPD3120 (we will be using power from USB-C only and acts as upstream facing port), and kindly let me know if it supports by default the addition of cross-mux as marked in red or we have to alter the firmware?
2. Please clarify about the firmware updates. I can see that these chips has SWD interface to program the flash and along with it is also mentioned in that datasheet that the devices have default firmware, for example CYPD3120 has default FW of USB Bootloader. I am assuming that it means we can program the CYPD3120 via USBC? Also, once the firmware is loaded then we don't need to program or boot it via USB or I2C each time? Actually this may help us to eliminate the addition of Embedded Controller on the board.
3. Lastly, the CYPD3120 will be using USB 2 lines for Billboard support but at the same time the USB 2 lines will be going to the USB hub. I have added the green lines in above block diagram. Usually we can do it if the USB2 lines are just used for charge detection and we can connect them to the PD and stub along with passing the USB 2 lines onwards to the HUB or any other location. Do you think it will be OK to do so in this case where the USB2 lines will be used by CYPD3120? If this is not possible then may be we can connect it via DNP to CYPD3120 and use the billboard support within the hub.
These points are important before implementing it and due to time constraint I would really appreciate a reply on these above points.
Hi I am planning to use CYPD3171-24LQXQ in my design and this is for QC operation. In the datasheet it is given that it supports QC4.0. Just want to k...
Hi I am planning to use CYPD3171-24LQXQ in my design and this is for QC operation. In the datasheet it is given that it supports QC4.0. Just want to know whether it supports all QC modes with both source and sink capability? Because i am in a confusion after going through the QC related answers in the forrum.
My Lenovo yoga C930 and the charger stopped working after my dog bit the usb type c cable. After buying a new charger I found out that...
My Lenovo yoga C930 and the charger stopped working after my dog bit the usb type c cable. After buying a new charger I found out that my laptop doesn't charge anymore. I opened the laptop and plug it in then I found the problem. The CYPD4226-40LQXI was heating up like crazy. I disordered the part and found that pin 23 V5V_P1 was shorted to GND.
I ordered the part from Mouser and I should receive it tomorrow but after going through the datasheet again it seems this chip is programmable. Does it comme with a working firmware out of the box ?
We are looking (again) at developing a DisplayPort 1.2 Input + USB 3.0 Input to USB-C (DFP) adapter. The CCG3 Host reference design is more or les...
We are looking (again) at developing a DisplayPort 1.2 Input + USB 3.0 Input to USB-C (DFP) adapter. The CCG3 Host reference design is more or less the design we are looking at, but we had one key question:
If we want to allow Pin Assignment D (2 lanes DP and 2 lanes USB 3), will that work when a upstream laptop is connected via legacy DisplayPort 1.2 cable? Will that laptop get information via AUX that it should provide only 2 lanes DP? Since the laptop will not be part of the PD signalling regarding C or D pin assignment.
What we "fear" is that the laptop will always default to 4 lanes DP on the DP output and not be informed about the need to only deliver 2 lane DP on lane 0 and 1.
Since Cypress host reference design has a DP 1.2 input and it apperently works when connecting a laptop via a DP cable to it, maybe it is not a problem?
Hello support team,
I hope you are doing well. We are implementing the USB C (from apple MAC) to USB 3.0 Gen 1 hub along with HDMI port with 4K @ 30Hz...
Hello support team,
I hope you are doing well. We are implementing the USB C (from apple MAC) to USB 3.0 Gen 1 hub along with HDMI port with 4K @ 30Hz. In our case we are will sinking from the laptop and on our side we will only get power from laptop USB-C. We have already selected rest of the chips except the cross switch for USB and DP lines along with PD Alt mode IC. Can you please suggest the options that are in-stock and can easily be sourced?
I was looking at CYPD1120 (PD Alt Mode controller) but it is no where available, we would like to know if Cypress has any alternative that we can use?
Secondly, do you have any recommendation for the sink switch? I am reviewing cypress USB-C based development board reference design where you are using PS8742B as sink switch. In our case if you don't have a direct part for the switch then please confirm if your PD controller will support the DP Alt Mode for TI based cross switches like TUSB564RNQT?
Lastly, if our USB hub chip supports billboard then can we skip the separate billboard IC to reduce the board space and cost? Please note that we are using USB5806/KD from Microchip.
Attempting to assist others in a repair of this logic board. The CYPD4226 controller is available from authorized distributors.
Q1: Is the USB Type C controller able to replace the original component on this Lenovo logic board? Understand that there is a factory I2C bootloader but is there custom firmware onboard from Lenovo that may hinder this repair?
Q2: Can the firmware be read out of a similar logic board?
Q3: Read on another thread in this forum that Lenovo offers such firmware. Lenovo was useless on this case and did not want to assist further. We can attempt to reverse engineer the details for the public review but wish to understand if the CYPD4226 is a protected flash memory or not. Which tool can allow us to R/W to this USB Type C controller over I2C? Totalphase tools?
The owner is sourcing a 'blank' CYPD4226 device for this replacement.
In hindsight, the CCx lines must have been zapped by the high Vbus rail after a PD contract was enabled. Very common but the device should have had protection against this issue. We reported the same quirk ages ago to Via Semiconductor as I almost burnt my hands with the spec. Nasty and still evolving cases. Even after investing close to $1k USD on Cypress tools, your kits claimed to support 100W of negotiation yet the kit featured traces thinner than my hair. Apparently no one cross checked the reference designs.