 HAR-11883 | Known Issue | Ixora might fail to pick up HDMI EDID on some displays | Ixora V1.3A | |
Customer Impact: Reading EDID from displays may not work reliably. Description: SoMs inserted on the Ixora Carrier Board may have problems reading EDID on multiple displays using native HDMI due to a bidirectional level shifter in the DDC circuit causing interference. Workaround: There is no known workaround besides assembling an alternative bidirectional level shifter. This issue will be fixed in future product versions. |
| HAR-10452 | Known Issue | High-pitched audible noise from the Ixora carrier board | Ixora V1.3A | |
Customer Impact: Potential audible high-pitched noise has been observed under specific operating conditions. Description: Customers may experience audible high-frequency noise in certain scenarios. While no functional impact has been identified so far, the behavior may affect perceived product quality and acoustic comfort in noise-sensitive environments. Workaround: Disassembling the resistor C167 may improve or eliminate the issue. |
| HAR-8891 | Known Issue | WAKE1_MICO# is pulled up to 3.3V instead of 3.3V_SW | Ixora V1.1
Ixora V1.2 | Ixora V1.3 |
Customer Impact: In the off state, there is a potential backfeeding from the pull-up resistor of the WAKE1_MICO# signal on the carrier board to the Apalis SoM/SoC. However, as the pull-up resistor has a value of 10kOhm, the backfeeding current is small (up to 0.33mA). Therefore, there is no real impact expected. Description: The WAKE1_MICO# signal is used to wake up the Apalis SoMs from the suspend state (sleep state). This signal is served with a regular GPIO (with wake capability). The IO rail of this GPIO is turned off during the off state. Therefore, by design, it is not possible to use the WAKE1_MICO# signal for waking the SoM up from the off state (the SoM can only be woken up from the off state by asserting the RESET_MICO# signal or via a complete power cycle).
In the affected HW versions of the Ixora, the WAKE1_MICO# signal is pulled up to the 3.3V (always-on) rail. The 3.3V (always-on) rail remains on, even if the SoM is shut down (off state). As the IO rail of the GPIO pin serving the WAKE1_MICO# signal is turned off during the off state, a small backfeeding current can occur in the off state from the pull-up resistor on the carrier board into the SoM/SoC.
For the above reasons, it is recommended to pull up the WAKE1_MICO# to the 3.3V_SW (switched), which is turned off in the off state. Workaround: The 10kOhm pull-up resistor on the carrier board (R146) can be removed, if the related internal pull-up resistor of the SoC is enabled or the wake function is entirely disabled. This eliminates the potential backfeeding over the WAKE1_MICO# signal. |
| HAR-1924 | Known Issue | Redesign power supply. The current TPS51120 solution isn't ideal | Ixora Carrier Board V1.0
Ixora Carrier Board V1.1 | Ixora 1.2A |
Customer Impact: The overcurrent protection can unintentionally trigger and shut down the system in combination with the Apalis iMX8QM or Apalis TK1. Description: Ixora Carrier Board (V1.1 and V1.0) power supply is designed to supply a maximum output current of 6.7A at 3.3V rail (Ixora V1.1) and 5A at 3.3V rail (Ixora V1.0). The buck converter on the Ixora Carrier Board features Output Over-Current Protection (OCP), which shuts down the power supply immediately if the output current exceeds the maximum output current limit. Workaround: Check errata document for complete workaround recommendation.https://docs.toradex.com/104334-ixora-errata.pdf |
| HAR-1828 | Known Issue | Ethernet center tap circuit wrongly assembled | Ixora Carrier Board V1.0
Ixora Carrier Board V1.1 | Ixora Carrier Board V1.2 |
Customer Impact: The Ethernet port fails the compliance test for 10BASE-T. 100BASE-TX and 1000BASE-T are passing. Description: All currently available Toradex Apalis modules do not require a center tap voltage. Only 100nF capacitors are required on the center tap pins of the magnetics. Connecting the center tap signals together can degrade the signal quality and is therefore not recommended. Workaround: Check errata document for complete workaround recommendation.https://docs.toradex.com/104334-ixora-errata.pdf |
| HAR-527 | Known Issue | Use DDC_SCL/SDA pins for Apalis I2C2_SCL/SDA (DDC) | Ixora V1.3
Ixora Carrier Board V1.0
Ixora Carrier Board V1.1
Ixora Carrier Board V1.2 | Apalis TK1 1.2A
Not applicable |
Customer Impact: In combination with the Apalis TK1, the DDC information of some monitors cannot be readsuccessfully, and therefore, no picture is shown. Description: The Apalis TK1 module, combined with the Ixora carrier board, shows issues with some HDMI monitors. In case of failure, the module cannot read the monitor's DDC information and will not show any picture. It depends on the monitor whether the issue appears. In some module/monitor combinations, the problem occurs only when hot-plugging the HDMI cable, while in other cases, the issue also appears when booting the module. The issue only appears if the Apalis TK1 module is combined with the Ixora Carrier Board. Apalis T30 and Apalis iMX6 are not affected by this erratum.The issue is caused by an incompatible low logic level of the DDC interface. The Ixora board features the Nexperia IP4791CZ12 HDMI ESD protection and level shifter. This device is used for level shifting the 5V HDMI DDC signals to the 3.3V level of the Apalis module. According to the datasheet, the maximum output low-level of this device is 0.92V for the 3.3V level output. The maximum input low-level of the Apalis TK1 2GB V1.1A DDC signals is 0.45V. Workaround: Check errata document for complete workaround recommendation.https://docs.toradex.com/104334-ixora-errata.pdf |
