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- XDS110 is able to load program and debug, right? I see in TI'website, AM243x isn't in device supported list.
- I need optimize space of my board, so I don't want to place circuitry XDS110 on my board. In my ideal, I will purchase debug probes tool from TI. Let me know what tool I should use and pinout I should place in my board.
Yes, the standalone XDS110 supports AM243. As long as you don't want to use any of the Trace, you can use the C TI 20pin header with the XDS110. As a reference, take a look at the C TI 20 pin section on the TMDS243GPEVM schematic (available in the TMDS243GPEVM Design Documents download).
The AM243x does support USB 3.0 (not 3.1) device/host/DRD in hardware. The current MCU+ SDK only supports the USB 2.0 device mode. For USB 2.0 host mode, we use a third party company MCCI for support.
You mean that AM243x DOES NOT support USB 3.1 and USB 3.0? As I see in datasheet, with XAM2432ASFGGAALV supports hardware for USB 3.1. Could you check again for me?
And my 2nd question, follow my last email:
"I think I should use other PHY IC (external PHY). Could you introduce for me some IC to do this.
I intend to use TUSB7320 for this, but TI recommends that don't use for new design"
I think the USB 3.0 is supported by the USB IP, but the current software does not support USB 3.0. The MCU+ SDK was only specified for USB 2.0 device mode only. The USB 2.0 host is planned to support via third party. The AVV tests did not test USB 3.0 either, so there is risk to claim that we support USB 3.0.
In order to support USB 3.0 in software, the Serdes has to be used too. We do not have plan to support Serdes driver in MCU+ SDK.
I do not know the answer to the external PHY question.
My customers said they want to some one can confirm that AM243x can use USB3.0 with external PHY and please recommend to me part number of external PHY.
Could you help him to resolve this query ,thank you !
I do not believe an external USB 3.0 phy will work with the AM243, since the connections that would be necessary for the external phy are not exposed on the AM243 device.
The datasheet mentions the AM243x supports USB3.1 because the silicon has the peripherals internally to enable USB3.1. However, as Ming mentioned, the current software releases do NOT support USB3.0 and only supports USB 2.0.
Because the silicon has the peripherals internally to enable USB3.1, none of the signals are brought out to IO pins for enabling an external USB3.1 phy, so we cannot recommend an external phy to you.
To clarify, the hardware does exist on the AM243 for USB3.1, but the software to drive that hardware does not exist.
Regarding you question on connecting the TUSB7320 to the PCIe line on the AM243, I am checking with an expert on the team to see if this can be done or not and will get back to you once I have an update.
Perhaps I can help clear up some of the confusion in this thread.
1) USB3.0 vs USB3.1: This refers to the supported USB standard, but in itself does not describe the connection type. In the case of AM243x, the supported revision of the embedded controller is indeed USB 3.1, but the connection speed is limited by HW to USB3.1 GEN1 (5Gb/s), and (currently) by SW to USB2.0 (480Mb/s). As such the current maximum connection speed is USB2.0 @ 480Mb/s.
2) An external PHY will not resolve this issue. The AM243x already implements internal USB PHY(s) but as I mentioned above, SW currently only supports USB2.0 speeds on this interface. Also, I'd note that the TUSB73x0 series of devices are not discrete PHYs, but instead are PHY+CONTROLLER (as is the AM243x).
3) If you are looking for a high-speed interface to the AM243x, both Root Complex and/or Endpoint PCIe configurations are currently supported (AM243x can act as either, but not both at the same time). Keep in mind that this is for native PCIe only...add-in cards would need additional driver support for the add-in card functionality itself.
The USB 3.0 is supported on AM64x SK via Linux. If you have any questions regarding to AM64x SK please contact the Sitara MPU. I will forward your thread to the Sitara MPU for further help.
Please feel free to ask additional questions, but I recommend creating a new E2E post with the post title that matches the question you are asking. This will help ensure you get the best support from the correct folks on the team.
