This document describes the conga-QEVAL carrier board Rev. 1.2 when used with the Bluetechnix Qseven-i.MX537 module.

conga-QEVAL documentation

The conga-QEVAL is an evaluation board for Qseven® modules, made by congatec.

Web site: https://www.congatec.com/qeval.html?&L=0

Datasheet, schematics, and user's guide download: https://www.congatec.com/qeval-doc.html?&L=0

Boot modes

The conga-QEVAL base board features one jumper that configures the boot mode of the Qseven-i.MX537.

SPI NOR flash

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Qseven-i.MX537 V1.0:

Set jumper CN31 to position 1-2.

Qseven-i.MX537 ≥V1.1:

Set jumper CN31 to position 2-3.

USB/UART boot mode

Boot via USB-OTG port.

NOTE: The mfgtool requires this boot mode to be set.

Set jumper CN31 to position 2-3 (boot mode configuration).
Set jumper CN55 to position 2-3.
- This uses USB port 1 (=USB-OTG) as client.
- Attach your USB cable to connector CN20 (USB B type).

Power-On/Reset

Press button POWER (SW1) for 500ms to power up the module.
Press button POWER (SW1) for min. 1s to induce a Linux shutdown on the module.
Press button RESET (SW3) to reset the module.

JTAG adapter

It is possible to connect an ARM JTAG debugger to the conga-QEVAL board via an adapter.

conga-QEVAL CN35 (Feature Connector)
conga-QEVAL CN45
20-pin ARM JTAG connector (e.g. Farnell order nr. 1106835)

Schematics:

Ethernet

No configuration necessary. Connect to Ethernet port on CN22.

SD/MMC card socket

LED D12 is not used to indicate activity but signals that the socket is powered.

USB Hosts

USB ports 0, 2, 3 (all on CN21), 4, and 5 (on CN22) of the conga-QEVAL board are connected to the MX53 USB host 1 via a USB hub on the Qseven-i.MX537.
To enable USB port 1 (on CN21), set jumper CN55 to position 1-2.
- This selects host mode of the i.MX53 USB-OTG port.

USB Client

To enable the USB client port (CN20), set jumper CN55 to position 2-3.
- This selects device mode of the i.MX53 USB-OTG port.

CAN Bus

Set jumper CN62 to 1-2 (=Enable CAN termination).
Connect CAN bus cable to CN70
- Pin 2...CAN-
- Pin 4...CAN+

We have successfully tested a bitrate of 1MBit/s.

SATA

SATA doesn't need any jumper configuration. Connect your SATA device to SATA0 port (CN17).

LVDS display

We have tested LVDS0 and LVDS1 outputs with the following display:

Toshiba LT104AC36000

Configure the following jumpers:
- Set jumper CN11 to position 1-2 (Selects 12V as Backlight voltage)
- Set jumper CN13 to position 1-2 (Selects 3V3 as LCD voltage)
- Set jumper CN14 to position 1-2 (Sets backlight enable signal as high-active)

We used the following adapter to connect the display

conga-QEVAL CN12 (LVDS connector)
conga-QEVAL CN15 (LCD Power connector)
Toshiba CN1 (e.g. Digikey order nr. H10161-ND)
Toshiba CN2 (e.g. Farnell order nr. 1125375)