Mity CPU Platforms

06/14/2023

JC 02:46 PM MitySOM-AM57X PCB Development: RE: Design support for USB for use with AM57x SOM

Datasheet has been released Jonathan Cormier

06/09/2023

SS 04:53 PM MitySOM-AM57X PCB Development: RE: Design support for DP83640 Phy IC for use with AM57x SOM

Hi,
For testing IEEE 1588 H/W time stamp application, we included DP83640 in our circuit. Since DP83640 doesn't have 1.8V I/O level, we used Voltage level converters TXS0104E (Bidirectional, Push-pull and Open drain compatible) and SN... Sandeep Sivadas

06/07/2023

JC 01:47 PM MitySOM-AM57X PCB Development: RE: eMMC support for MitySOM AM572x

Per this e2e post, it should be okay to use 1.8V signal levels with an eMMC.
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/827480/am5718-emmc-at-1-8v
The eMMC_RSTn signal can be connected to any gpio on ... Jonathan Cormier

SS 07:25 AM MitySOM-AM57X PCB Development: RE: eMMC support for MitySOM AM572x

Hi Jonathan,
We designed an eMMC circuit using *MTFC16GAPALBH-AIT*. As per the data sheet of MitySOM MMC2 signals are 1.8V level.
we follow the AM572x-IDK schematic design for designing eMMC circuit. But there an eMMC_RSTn signal is ... Sandeep Sivadas

06/06/2023

JC 07:06 PM MitySOM-AM57X PCB Development: RE: Design support for USB for use with AM57x SOM

The USB2_DM/DP supports 5V voltage level. Datasheet will be updated on next release. Jonathan Cormier

JC 02:11 PM MitySOM-AM57X PCB Development: RE: Design support for USB for use with AM57x SOM

Thanks, I'll look into it. I'm pretty sure that's incorrect. Jonathan Cormier

SS 05:49 AM MitySOM-AM57X PCB Development: RE: Design support for USB for use with AM57x SOM

Hi Jonathan,
*1. For USB2, it is mentioned that voltage level is 1.8V. We need to connect these signals to USB3.0 StdA Connector
Can you point me to the documentation your referencing?*
https://www.criticallink.com/wp-cont... Sandeep Sivadas

TC 01:01 PM MityDSP-L138 (ARM9 Based Platforms) Software Development: Modification of flashing program - sfh_OMAP-L138.exe

(Posted by Tom on behalf of customer -- I am working to resolve the locked account issue)
in my work I use your L138-FX-325-RC chips, to which I added self-built base boards with peripherals.
Recently, I built a prototype of a measur... Thomas Catalino

06/05/2023

JC 09:31 PM MitySOM-AM57X PCB Development: RE: Design support for USB for use with AM57x SOM

Schematic review:
* Both schematics are using VUSB_VBUS1 as a net name. One of them is probably supposed to be VUSB_VBUS2.
* The SOM already contains 0.1uF caps on the USB1_SSTX_P/N lines, I don't believe they should be on the baseboa... Jonathan Cormier

SS 04:19 PM MitySOM-AM57X PCB Development: Design support for USB for use with AM57x SOM

Hi,
We need to integrate one USB 3.0, one USB 2.0 and one Debug USB with our application system.
1. For USB2, it is mentioned that voltage level is 1.8V. We need to connect these signals to USB3.0 StdA Connector
2. But for USB1... Sandeep Sivadas

JC 06:46 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: VSEL_SD functionality

No problem. I condensed all this info into a wiki page for future reference as well. And have initiated changes for our datasheet and errata to correct the signal name.
https://support.criticallink.com/redmine/projects/mitysom_am62x... Jonathan Cormier

PS 06:25 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: VSEL_SD functionality

Thank you very much to both of you for the quick and extensive answer. The key information that the voltage of VDDSHV5 is controlled via the VSEL_SD pin might be worth putting into the datasheet. Special thanks for the pointers on the er... Pal Szabo

JC 05:51 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: VSEL_SD functionality

The software side of the SD voltage selection is configured here:
https://support.criticallink.com/gitweb/?p=linux-ti.git;a=blob;f=arch/arm64/boot/dts/ti/k3-am62x-mitysom-devkit.dts;h=725aba2f30bb44c86b9d86d432cae15f3b08f067;hb=refs/h... Jonathan Cormier

JC 03:02 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: VSEL_SD functionality

Pal Szabo wrote:
> What is the functionality of the VSEL_SD pin (position 176 on the SODIMM connector)? Is it the same signal as VD_SEL mentioned in Note 8 in the MitySOM-AM62 datasheet on page 18? The datasheet does not contain more in... Jonathan Cormier

PS 09:05 AM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: JTAG TRSTn pulldown and other JTAG pullups

Thank you very much Mike, this clarifies the implemented pulls! Pal Szabo

06/04/2023

MW 10:37 AM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: VSEL_SD functionality

Hi Paul,
The VSEL_SD pin is connected to pin 12 of a TPS65219 PMIC on the SOM. VSEL_SD selects which voltage is applied to the AM62x VDDSHV5 voltage domain. The voltage is also present on the edge connector pin 172 as (VDDSHV_SDIO).... Michael Williamson

06/03/2023

PS 07:12 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: VSEL_SD functionality

What is the functionality of the VSEL_SD pin (position 176 on the SODIMM connector)? Is it the same signal as VD_SEL mentioned in Note 8 in the MitySOM-AM62 datasheet on page 18? The datasheet does not contain more information about it, ... Pal Szabo

06/02/2023

JC 03:31 PM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

Note you can update the command line args for the HelloWorld example to work without weston as well.
!clipboard-202306021130-ie2bs.png!
Jonathan Cormier

JC 03:29 PM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

Sandeep Sivadas wrote in message#6366:
> Hi Jonathan,
> ...
Okay, that is good news. At least some things are working with the touch screen.
>
> ...
So after some quick googling, I'm seeing a lot of results describing issues betwe... Jonathan Cormier

SS 05:47 AM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

Hi Jonathan,
We tried the evtest and weston commands. But the matrix GUI application is not responding to USB touch.
Then we stop the matrix GUI application and opened the wayland terminal, here the USB touch is working.
We tried w... Sandeep Sivadas

JC 02:51 PM MitySOM-AM57X Software Development: RE: Support for Qt creator application for MitySOM AM57x

Sandeep Sivadas wrote in message#6367:
> Hi Jonathan
> ...
You are right, this was a copy/paste mistake. I've updated the instructions. You found the correct path.
>
> ...
Can you check again after setting up the compilers? You ma... Jonathan Cormier

SS 09:58 AM MitySOM-AM57X Software Development: RE: Support for Qt creator application for MitySOM AM57x

Hi Jonathan
We followed the guidelines as per the link https://support.criticallink.com/redmine/projects/mitysom_am57x/wiki/QT_Starter_Guide_2022 and installed Qt Creator,Qt5 Designer,Qt5 Assistant,Qt5 Linguist.(Qt Version:5.9.5)
... Sandeep Sivadas

MW 12:56 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: JTAG TRSTn pulldown and other JTAG pullups

I corrected the last post. TDO is not pulled up or down on the SOM. Michael Williamson

MW 12:55 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: RE: JTAG TRSTn pulldown and other JTAG pullups

Hello,
The SOM includes the following on the JTAG related lines:
* 4.7K Pulldown on TRSTn
* 4.7k Pullup to VDDSHV_MCU on the following lines:
** TCK
** TDI
** TMS
** EMU0
** EMU1
This is a snippet of the schematic on the S... Michael Williamson

PS 12:03 PM MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P PCB Development: JTAG TRSTn pulldown and other JTAG pullups

The AM62x datasheet states (in section 6.4) that an external pulldown is required on the TRSTn line. Is this implemented on the module (if so, it might not be publicly documented), or the host board needs to add this pulldown?
What ab... Pal Szabo

05/31/2023

JC 02:25 PM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

> hid-generic 0003:0461:0022.0003: input: USB HID v1.00 Device
Okay good news, looks like the HID driver is getting loaded.
You should be able to use the "evtest" command to test the input device to make sure touch events are working... Jonathan Cormier

SS 05:44 AM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

Hi Jonathan,
Thank you for your support.
When i connected the Newhaven Display's USB with the AM572x Development kit, got the following printout messages
[ 3267.951725] usb 1-1.2: new full-speed USB device number 5 using xhci-hc... Sandeep Sivadas

SS 12:08 PM MitySOM-AM57X PCB Development: RE: Design support for DP83640 Phy IC for use with AM57x SOM

Hi Michael,
We are planned to do our ethernet design with IEEE 1588 PTP hardware support with RJ45 and Fibre communication.
But since there is this IO level voltage differences we are planning to design the circuit with DP83822 Phy.... Sandeep Sivadas

05/30/2023

JC 07:26 PM MitySOM-AM57X Software Development: RE: Support for Qt creator application for MitySOM AM57x

FYI Jonathan Cormier

JC 07:25 PM MitySOM-AM57X Software Development: RE: Support for Qt creator application for MitySOM AM57x

Sandeep Sivadas wrote:
> Hi,
> ...
In my experience, you should use the latest version of QT creator and expect it to work with whatever version of QT you are developing for.
The version of QT that ships with the "20220323 tisdk-ro... Jonathan Cormier

SS 05:30 AM MitySOM-AM57X Software Development: Support for Qt creator application for MitySOM AM57x

Hi,
We have to develop a QT application for our AM57x Development board. which version of QT creator is supported with AM57x ?
Is there any example programs and getting started tutorials for the same.
with regards
Sandeep S Sandeep Sivadas

JC 05:48 PM MitySOM-AM57X Software Development: RE: USB touch screen support for AM572x development board

Newhaven doesn't provide a lot of details on this USB touch interface other than it's a "USB-HID device". Which I would normally expect to fall under the same standard driver used by the USB mouse. But since the mouse worked and this d... Jonathan Cormier

SS 05:50 AM MitySOM-AM57X Software Development: USB touch screen support for AM572x development board

Hi,
We are using a Capacitive HDMI TFT Module (Make: Newhaven) with AM572x development board. On booting the linux with SD card provided with the Development kit, the USB touch is not working.
We can connect mouse device with the US... Sandeep Sivadas

MW 02:56 PM MitySOM-AM57X PCB Development: RE: Design support for DP83640 Phy IC for use with AM57x SOM

Hi Sandeep,
As mentioned in the datasheet, all of the VDDSHVx pins with the exception of VDDSHV8 (for the MMC/SD interface) are connected to 1.8V on the MitySOM-AM57x.
You will need to use 1.8V compatible IO PHY on the PR2_MII0 a... Michael Williamson

SS 12:28 PM MitySOM-AM57X PCB Development: Design support for DP83640 Phy IC for use with AM57x SOM

Hi,
We have some doubts regarding designing the Ethernet circuit using DP83640(For PTP hardware time stamp).
1. The voltage levels for PR2_MII0 and PR2_MII1 signals are 1.8V in the SOM. These signals are connected to DP83822 Phy IC... Sandeep Sivadas

JC 02:22 PM MitySOM-AM57X Software Development: RE: Example USB (usb 3.0 port) is not work

Was able to verify that when plugged into a usb2.0 port, the gadget reports high-speed config and then reports super-speed config when plugged into usb3.0 port. Jonathan Cormier

05/26/2023

SS 07:58 AM MitySOM-AM57X PCB Development: RE: Mismatch in 100 Pin connector in schematic and datasheet

Hi Michael,
1. We tried to convert the Altium files to Cadence, then it shows converts only ASCII format file of PCB board.
2. After cleared the Web browser cache, i can download the updated datasheets. Will proceed with the mechanic... Sandeep Sivadas

05/25/2023

MW 12:38 PM MitySOM-AM57X PCB Development: RE: Mismatch in 100 Pin connector in schematic and datasheet

HI Sandeep,
1. The design files are in Altium Designer. I will ask Tom Catalino to send you an updated version of them, I believe you have communicated with him beofre. You may need to find an importer. I will check to see if we h... Michael Williamson

MW 10:30 AM MitySOM-AM57X Software Development: RE: Query - Example Baseboard I2C Power Monitor

The original linux kernel driver for the LTC2945 has a 0.001 Ohm resistor value hardcoded in the logic that converts measured voltage across the sense resistor to current.
Our current / released board design has been using 0.01 Ohms ... Michael Williamson

SS 05:24 AM MitySOM-AM57X Software Development: Query - Example Baseboard I2C Power Monitor

Hi,
We tested the i2C power monitor as per the below link and got the result as shown below.
https://support.criticallink.com/redmine/projects/mitysom_am57x/wiki/Example_Baseboard_I2C_Power_Monitor
root@mitysom-am57x:/sys/cla... Sandeep Sivadas

05/24/2023

SS 12:51 PM MitySOM-AM57X PCB Development: RE: Mismatch in 100 Pin connector in schematic and datasheet

Hi Michael,
Thank you for the clarification.
1. Can we get the Allegro cadence PCB file for the MitySOM AM572x Development Kit. We are using cadence for PCB design.
2. We are in the process of PCB designing. Can you please clar... Sandeep Sivadas

MW 11:31 AM MitySOM-AM57X PCB Development: RE: Mismatch in 100 Pin connector in schematic and datasheet

Hi Sandeep,
I am sorry for the confusion.
The hirose datasheets don't appear to specify a "pin 1" for these connectors, which is why we have identified "pin 1" on the MitySOM-AM57x Datasheet (figure 3). I think this is partially b... Michael Williamson

SS 05:25 AM MitySOM-AM57X PCB Development: Mismatch in 100 Pin connector in schematic and datasheet

Hi,
There is a mismatch in 100 pin DF40HC(3.0)-100DS-0.4V(58) connector pin details in schematic design and datasheet provided.
Connector J14 : HDMI1_DATA2Y - Pin No: 4 ( In schematic)
In the datasheet, HDMI1_DATA2Y marked as Pi... Sandeep Sivadas